蜚聲中外的唐(tang)代(dai)京(jing)師長安,以及東都洛陽,實際上都是在隋代(dai)建造的,創建這兩(liang)座(zuo)歷(li)史名(ming)城(cheng)的第(di)一功臣(chen)是杰(jie)出的建筑(zhu)學(xue)家宇文愷。
宇文愷,字安樂,鮮卑族。西魏(wei)恭帝二年(555年)生(sheng)于長安。他出生(sheng)在北朝后期(qi)一個顯赫的豪(hao)門。
出生在這樣一個家庭中的(de)宇(yu)文愷(kai),二歲(sui)時就被贈爵(jue)雙泉縣伯,六歲(sui)時襲祖爵(jue)安平郡(jun)公,但身在將(jiang)門(men)的(de)宇(yu)文愷(kai)卻不好弓馬,而喜好讀(du)書。《隋書》本傳說(shuo)“愷(kai)少有器(qi)局。家世武將(jiang),諸(zhu)兄(xiong)并以弓馬自達,愷(kai)獨好學(xue),博覽書記(ji),解屬文,多伎藝,號為名父公子。”這段記(ji)載可窺知他為學(xue)的(de)大致情況。
北(bei)(bei)周(zhou)(zhou)末,宇文(wen)愷累遷(qian)右侍上(shang)(shang)士、御正中(zhong)(zhong)(zhong)大(da)(da)夫、儀同三司。大(da)(da)象二年(580年),楊堅任北(bei)(bei)周(zhou)(zhou)宰(zai)相后,宇文(wen)愷又被任命為上(shang)(shang)開府、匠師(shi)中(zhong)(zhong)(zhong)大(da)(da)夫。據(ju)《唐(tang)六典》卷二三“將作都水(shui)監”記載(zai):“后周(zhou)(zhou)有(you)匠師(shi)中(zhong)(zhong)(zhong)大(da)(da)夫一人,掌城郭(guo)、宮室之制及諸(zhu)器物度量。”又據(ju)考證,北(bei)(bei)周(zhou)(zhou)設有(you)“匠師(shi)中(zhong)(zhong)(zhong)大(da)(da)夫,一人,正五命”。因此可以推知,當時(shi)年輕的宇文(wen)愷已經在建筑科學和工程管理方面嶄露鋒芒。
581年,楊堅(jian)建(jian)立隋(sui)(sui)朝,是為(wei)(wei)隋(sui)(sui)文(wen)帝(di)(di)。為(wei)(wei)了(le)鞏固自己的(de)(de)統治地位,他大肆(si)誅(zhu)殺(sha)北(bei)周宗(zong)室宇(yu)(yu)文(wen)氏(shi),以清除北(bei)周殘(can)余勢力。宇(yu)(yu)文(wen)愷原(yuan)也被定入誅(zhu)殺(sha)之(zhi)列。由于宇(yu)(yu)文(wen)愷家(jia)族與(yu)北(bei)周宗(zong)室有(you)別,二兄(xiong)宇(yu)(yu)文(wen)忻又擁戴(dai)隋(sui)(sui)文(wen)帝(di)(di)有(you)功,加(jia)上(shang)他本(ben)人(ren)的(de)(de)才(cai)華深(shen)得(de)(de)隋(sui)(sui)文(wen)帝(di)(di)的(de)(de)賞識,因而方幸免一死。隋(sui)(sui)文(wen)帝(di)(di)“修宗(zong)廟”,宇(yu)(yu)文(wen)愷被起用,任(ren)營宗(zong)廟副監、太子左庶子,負責宗(zong)廟的(de)(de)興修事務。宗(zong)廟建(jian)成(cheng)后(hou),被加(jia)封為(wei)(wei)甑山縣(xian)公,邑千戶,隨后(hou)投入了(le)隋(sui)(sui)代都(dou)城大興城(今(jin)西(xi)安(an)城)的(de)(de)營建(jian)工程。隋(sui)(sui)朝建(jian)立之(zhi)時,仍(reng)承襲北(bei)周以長安(an)城為(wei)(wei)京都(dou)。長安(an)城始建(jian)于漢代,已有(you)近八百年的(de)(de)歷史,城市已顯得(de)(de)過于狹小(xiao),宮宇(yu)(yu)亦多朽蠹,加(jia)上(shang)供(gong)水(shui)(shui)、排水(shui)(shui)嚴重不暢(chang),污(wu)水(shui)(shui)往往聚而不泄,生活用水(shui)(shui)受到(dao)嚴重污(wu)染,已經不能適(shi)應社會(hui)發(fa)展和人(ren)們生活的(de)(de)需要。因此,隋(sui)(sui)文(wen)帝(di)(di)嫌其“制(zhi)度狹小(xiao),又宮內多妖異”,通直散(san)騎常侍庾季才(cai)也奏云:“漢營此城,經今(jin)將(jiang)八百歲,水(shui)(shui)皆咸(xian)鹵,不甚宜(yi)人(ren)。”于是決定另建(jian)新都(dou)。
開(kai)皇(huang)二年(582年)六月,隋(sui)(sui)文(wen)(wen)(wen)帝(di)下詔:“此城從漢,凋殘(can)日久(jiu),屢為戰場,舊經(jing)喪亂。今(jin)之(zhi)宮(gong)(gong)(gong)室,事近權宜,又非(fei)(fei)謀筮從龜(gui),瞻星揆日,不足建(jian)皇(huang)王之(zhi)邑,合大眾所聚(ju)”,“今(jin)區(qu)宇(yu)(yu)(yu)寧一,陰(yin)陽順序,安安以遷,勿懷胥(xu)怨。龍(long)首(shou)山川原秀麗,卉物滋阜,卜(bu)食相土,宜建(jian)都(dou)邑,定(ding)鼎(ding)之(zhi)基永固,無(wu)窮(qiong)之(zhi)業在(zai)斯。公私府宅,規模(mo)(mo)遠近,營構資費,隨(sui)事條奏。”隋(sui)(sui)文(wen)(wen)(wen)帝(di)下詔于(yu)是“詔左(zuo)仆(pu)射(she)高颎(jiong)、將(jiang)作(zuo)大匠劉(liu)龍(long)、巨鹿郡公賀婁子(zi)干、太(tai)府少(shao)卿高龍(long)叉等創(chuang)造新都(dou)”。“以太(tai)子(zi)左(zuo)庶子(zi)宇(yu)(yu)(yu)文(wen)(wen)(wen)愷有巧(qiao)思,領(ling)營新都(dou)副監(jian)”。時(shi)高颎(jiong)雖為大監(jian),不過(guo)總領(ling)大綱(gang),而規模(mo)(mo)計(ji)劃皆出自宇(yu)(yu)(yu)文(wen)(wen)(wen)愷。由于(yu)楊(yang)堅在(zai)北周時(shi)曾被封為大興郡公,故新都(dou)命名(ming)為大興城(今(jin)陜西(xi)西(xi)安)。開(kai)皇(huang)三(san)年,新都(dou)建(jian)成(cheng),而倉廩(lin)尚(shang)虛,需要大量轉(zhuan)運(yun)關(guan)(guan)東米(mi)粟,渭水多沙,不便漕運(yun)。四年,下詔興建(jian)漕渠(qu)(qu),令宇(yu)(yu)(yu)文(wen)(wen)(wen)愷率(lv)領(ling)水工鑿渠(qu)(qu),引渭水通(tong)黃河,自大興城東至潼關(guan)(guan)三(san)百余里,名(ming)叫廣(guang)通(tong)渠(qu)(qu)。渠(qu)(qu)成(cheng)后(hou),轉(zhuan)運(yun)便利,隋(sui)(sui)唐關(guan)(guan)中的(de)富庶頗(po)得(de)益于(yu)此。其(qi)后(hou),他受到其(qi)兄宇(yu)(yu)(yu)文(wen)(wen)(wen)忻(xin)被殺事件(jian)的(de)牽連,一度罷(ba)官居家(jia)。開(kai)皇(huang)十三(san)年,隋(sui)(sui)文(wen)(wen)(wen)帝(di)要在(zai)岐州(今(jin)陜西(xi)鳳翔)建(jian)仁(ren)壽(shou)宮(gong)(gong)(gong),經(jing)右仆(pu)射(she)楊(yang)素(su)推薦,文(wen)(wen)(wen)帝(di)任命愷為檢(jian)校(xiao)將(jiang)作(zuo)大匠,后(hou)又拜(bai)為仁(ren)壽(shou)宮(gong)(gong)(gong)監(jian)、將(jiang)作(zuo)少(shao)監(jian)。在(zai)楊(yang)素(su)主(zhu)持下,仁(ren)壽(shou)宮(gong)(gong)(gong)建(jian)造得(de)非(fei)(fei)常(chang)華麗,成(cheng)為隋(sui)(sui)文(wen)(wen)(wen)帝(di)經(jing)常(chang)臨幸的(de)別宮(gong)(gong)(gong)。
開皇十三(san)(san)年(593年)二月,隋文(wen)(wen)帝令楊(yang)素(su)在岐(qi)州(今陜西鳳翔)北(bei)營造仁(ren)壽宮(gong)。楊(yang)素(su)以宇(yu)文(wen)(wen)愷(kai)有巧思,“奏(zou)前萊州刺(ci)史宇(yu)文(wen)(wen)愷(kai)檢校將作(zuo)大匠”,負責仁(ren)壽宮(gong)工程(cheng)的籌劃和設計。“于是(shi)夷(yi)山堙谷(gu)以立宮(gong)殿,崇臺(tai)累(lei)榭,宛(wan)轉相屬”,整個宮(gong)殿區“制度壯麗”,是(shi)一組極其雄偉的宮(gong)殿建筑(zhu)群(qun)。開皇十五年三(san)(san)月,仁(ren)壽宮(gong)建成,宇(yu)文(wen)(wen)愷(kai)被任命為仁(ren)壽宮(gong)監(jian),授儀同三(san)(san)司,接著又被任命為將作(zuo)少監(jian)。
仁(ren)壽二(er)年(nian)(602年(nian))八月,隋文(wen)(wen)帝皇后獨(du)孤氏卒。閏十月,楊素和宇(yu)(yu)文(wen)(wen)愷受命營造(zao)皇陵(ling)太(tai)陵(ling)。獨(du)孤皇后葬后,宇(yu)(yu)文(wen)(wen)愷復(fu)爵(jue)安平郡公,邑千戶。
仁壽四年七(qi)月,隋(sui)煬帝楊廣繼位(wei)。鑒于大興城位(wei)置偏西,又水(shui)(shui)陸(lu)交通(tong)不便,也為了(le)更進一步加強(qiang)對河北、山東(dong)以(yi)及(ji)江(jiang)淮地區的控(kong)制,決定在洛陽故都附近(jin)建造新城,作為東(dong)京。十(shi)一月癸丑,隋(sui)煬帝在巡(xun)幸洛陽時下(xia)詔說(shuo),洛陽的地理位(wei)置“控(kong)以(yi)三河,固(gu)以(yi)四塞,水(shui)(shui)陸(lu)通(tong),貢賦等”,“今可于伊、洛營建東(dong)京,便即設官分職,以(yi)為民極(ji)也”。
據(ju)(ju)《隋書·煬帝(di)(di)紀》記載,大(da)業元年(605年)三月(yue)(yue)丁(ding)未,隋煬帝(di)(di)“詔(zhao)尚(shang)書令楊素、納言(yan)楊達、將作(zuo)大(da)匠(jiang)宇(yu)(yu)文(wen)愷(kai)(kai)營(ying)建(jian)東(dong)京,徙(xi)豫州(zhou)郭(guo)下居人以(yi)實(shi)之”。又(you)據(ju)(ju)《資治通(tong)鑒》卷一八零記載,“每月(yue)(yue),役丁(ding)二百萬(wan)人。徙(xi)洛(luo)州(zhou)郭(guo)內(nei)居民(min),及(ji)諸州(zhou)富商大(da)賈數萬(wan)戶以(yi)實(shi)之”。大(da)業二年春正月(yue)(yue)辛酉,“東(dong)京成”,其營(ying)建(jian)過(guo)程前后僅歷(li)十個月(yue)(yue),是又(you)一座在短時(shi)間內(nei)經周密規劃(hua)、設(she)計、建(jian)造而成的大(da)型(xing)城市。在營(ying)建(jian)東(dong)京時(shi),宇(yu)(yu)文(wen)愷(kai)(kai)“揣帝(di)(di)心(xin)在宏侈(chi),于(yu)是東(dong)京制(zhi)度窮極壯麗”。故此宇(yu)(yu)文(wen)愷(kai)(kai)博(bo)得隋煬帝(di)(di)的歡心(xin),被進位開府(fu)儀同(tong)三司。其間,宇(yu)(yu)文(wen)愷(kai)(kai)還(huan)受命在河南(nan)郡壽安縣(今河南(nan)宜陽)營(ying)造顯(xian)仁宮,“南(nan)接皁澗,北(bei)跨洛(luo)濱”,為此,曾“發大(da)江(jiang)之南(nan)、五(wu)嶺以(yi)北(bei)奇(qi)材異石,輸之洛(luo)陽;又(you)求(qiu)海內(nei)嘉木異草,珍(zhen)禽奇(qi)獸,以(yi)實(shi)園苑(yuan)”。
隋煬帝(di)楊廣即(ji)位(wei)后,要營建(jian)洛(luo)陽,又(you)以(yi)(yi)愷為(wei)營東(dong)都(dou)副(fu)監,后遷(qian)將作(zuo)大(da)匠。宇(yu)文愷把東(dong)都(dou)建(jian)筑(zhu)(zhu)得極其壯麗(li),因此被升為(wei)工部尚書。他曾經(jing)建(jian)造大(da)帳,帳下(xia)可(ke)(ke)以(yi)(yi)容納數千人。又(you)造觀(guan)(guan)風行殿,殿上(shang)可(ke)(ke)以(yi)(yi)容納侍衛數百(bai)人,行殿下(xia)裝輪(lun)軸,可(ke)(ke)以(yi)(yi)迅速(su)拆卸和拼合。他曾建(jian)議按古制(zhi)建(jian)筑(zhu)(zhu)明堂(tang)(tang),“下(xia)為(wei)方(fang)堂(tang)(tang),堂(tang)(tang)有(you)五室(shi),上(shang)為(wei)圓(yuan)觀(guan)(guan),觀(guan)(guan)有(you)四門”,并曾用木料(liao)制(zhi)作(zuo)了模型(xing)。雖然沒(mei)有(you)興(xing)建(jian),卻表現了他的巧思和學識(shi)的淵博。大(da)業八年(612年),宇(yu)文愷卒。
宇(yu)文(wen)(wen)愷在(zai)(zai)建筑學(xue)方面的(de)著述有《東都圖(tu)記》20卷,《明(ming)堂圖(tu)議》2卷,《釋疑》1卷,均(jun)見(jian)行于(yu)世。但除《明(ming)堂圖(tu)議》的(de)部分內容保存在(zai)(zai)《隋書·宇(yu)文(wen)(wen)愷傳(chuan)》、《北(bei)史·宇(yu)文(wen)(wen)貴(gui)傳(chuan)》和《資(zi)治通鑒(jian)》等(deng)史籍中外,其(qi)他的(de)后(hou)來都亡佚了,這實是建筑學(xue)史上的(de)一大損失。
政治(zhi)、經濟、文(wen)化中心
大興(xing)城(cheng)的(de)(de)營建(jian),史稱“制(zhi)(zhi)度(du)多出于高颎”,“高颎雖總(zong)大綱,凡所(suo)規(gui)畫(hua),皆出于愷(kai)”。宋代的(de)(de)宋敏求在(zai)《長安志》中也說在(zai)隋大興(xing)城(cheng)興(xing)建(jian)時,“命左仆射高颎總(zong)領其事(shi)(shi),太(tai)(tai)子左庶(shu)子宇文愷(kai)創制(zhi)(zhi)規(gui)模,將作大匠劉龍、工(gong)部尚書巨鹿郡(jun)公賀樓(婁)子干、大(太(tai)(tai))府少卿尚龍義(yi)并充使營建(jian)”。可(ke)見高颎主要是(shi)提出都城(cheng)的(de)(de)總(zong)的(de)(de)制(zhi)(zhi)度(du),并負責(ze)總(zong)的(de)(de)施建(jian)方針,而具體的(de)(de)規(gui)劃、設計則是(shi)由宇文愷(kai)完(wan)成的(de)(de),其他的(de)(de)副(fu)使主要是(shi)協助負責(ze)施工(gong)和(he)材料管理諸(zhu)事(shi)(shi)務。
大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng)(cheng)的(de)(de)興(xing)(xing)建(jian)(jian)(jian),不(bu)是(shi)在舊有(you)基(ji)礎(chu)上進(jin)行改建(jian)(jian)(jian)、擴建(jian)(jian)(jian)而(er)成的(de)(de)城(cheng)(cheng)(cheng)(cheng)(cheng)市(shi),而(er)是(shi)在短(duan)時間內按周密規劃興(xing)(xing)建(jian)(jian)(jian)而(er)成的(de)(de)嶄(zhan)新城(cheng)(cheng)(cheng)(cheng)(cheng)市(shi)。全城(cheng)(cheng)(cheng)(cheng)(cheng)由宮(gong)城(cheng)(cheng)(cheng)(cheng)(cheng)、皇城(cheng)(cheng)(cheng)(cheng)(cheng)和郭城(cheng)(cheng)(cheng)(cheng)(cheng)組成,先建(jian)(jian)(jian)宮(gong)城(cheng)(cheng)(cheng)(cheng)(cheng),后(hou)建(jian)(jian)(jian)皇城(cheng)(cheng)(cheng)(cheng)(cheng),最后(hou)建(jian)(jian)(jian)郭城(cheng)(cheng)(cheng)(cheng)(cheng)。開皇二(er)年(582年)六(liu)月(yue)開始(shi)興(xing)(xing)建(jian)(jian)(jian),十二(er)月(yue)基(ji)本(ben)竣工(gong)命名大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng)(cheng),次年三(san)月(yue)即正(zheng)式遷入使用(yong),前后(hou)僅九(jiu)個月(yue),其建(jian)(jian)(jian)設速(su)度之快實令人(ren)驚嘆。整個工(gong)程(cheng)的(de)(de)規劃、設計、人(ren)力(li)、物力(li)的(de)(de)組織和管理(li)都(dou)應(ying)是(shi)相(xiang)當精細和嚴謹的(de)(de)。在規劃設計和建(jian)(jian)(jian)設施工(gong)中,還得考慮地(di)形(xing)、水(shui)源、交通(tong)、軍(jun)事防御、環(huan)境美化(hua)(hua)、城(cheng)(cheng)(cheng)(cheng)(cheng)市(shi)管理(li)、市(shi)場供需(xu)等的(de)(de)配(pei)套(tao),以及都(dou)城(cheng)(cheng)(cheng)(cheng)(cheng)作為政治、軍(jun)事、經濟、文化(hua)(hua)中心的(de)(de)特(te)點等諸多(duo)方面的(de)(de)因(yin)素,解決一系列復(fu)雜的(de)(de)問題。因(yin)此大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng)(cheng)的(de)(de)興(xing)(xing)建(jian)(jian)(jian)標志著(zhu)當時的(de)(de)中國所達(da)到的(de)(de)經濟和科學技術水(shui)平。
有人曾列舉世界古(gu)代(dai)十座城(cheng)(cheng)市(shi)(shi)的面(mian)(mian)(mian)積(ji)進行比較(jiao):(1)隋(sui)(sui)大興城(cheng)(cheng)(唐長(chang)安城(cheng)(cheng)),583年建(jian)(jian),面(mian)(mian)(mian)積(ji)84.1平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(2)北魏洛(luo)陽(yang)城(cheng)(cheng),493年擴建(jian)(jian),面(mian)(mian)(mian)積(ji)100平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(3)明清北京(jing)城(cheng)(cheng),1421—1553年建(jian)(jian),面(mian)(mian)(mian)積(ji)60.2平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(4)元(yuan)大都,1267年建(jian)(jian),面(mian)(mian)(mian)積(ji)50平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(5)隋(sui)(sui)唐東京(jing)(洛(luo)陽(yang)城(cheng)(cheng)),605年建(jian)(jian),面(mian)(mian)(mian)積(ji)45.2平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(6)明南京(jing),1366年建(jian)(jian),面(mian)(mian)(mian)積(ji)43平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(7)漢長(chang)安(內城(cheng)(cheng)),建(jian)(jian)于公(gong)元(yuan)前202年,面(mian)(mian)(mian)積(ji)35平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(8)巴格達,800年建(jian)(jian),面(mian)(mian)(mian)積(ji)30.44平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(9)羅馬,300年建(jian)(jian),面(mian)(mian)(mian)積(ji)13.68平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li);(10)拜(bai)占(zhan)庭,447年建(jian)(jian),面(mian)(mian)(mian)積(ji)11.99平(ping)(ping)方(fang)(fang)(fang)(fang)公(gong)里(li)。從上所列可(ke)以看到,中國古(gu)代(dai)都市(shi)(shi)的規模之大在世界上是無與倫(lun)比的。
大興城(cheng)的(de)(de)規劃吸(xi)取了(le)曹魏鄴城(cheng)(故址(zhi)在(zai)今河(he)北(bei)(bei)臨(lin)漳鄴鎮東)、北(bei)(bei)魏洛陽城(cheng)的(de)(de)經驗,在(zai)方整對稱的(de)(de)原(yuan)則(ze)(ze)下,沿(yan)著南北(bei)(bei)中(zhong)軸線(xian),將宮城(cheng)和(he)皇(huang)(huang)城(cheng)置于全城(cheng)的(de)(de)主要(yao)地位,郭城(cheng)則(ze)(ze)圍繞(rao)在(zai)宮城(cheng)和(he)皇(huang)(huang)城(cheng)的(de)(de)東、西、南三面。分(fen)區整齊(qi)明確(que),象征(zheng)著皇(huang)(huang)權(quan)的(de)(de)威嚴,充(chong)分(fen)體(ti)現了(le)中(zhong)國古代(dai)京都規劃和(he)布局(ju)的(de)(de)獨特風格,反映了(le)統(tong)治者專制集權(quan)的(de)(de)思(si)想和(he)要(yao)求(qiu)。特別(bie)是(shi)把(ba)宮室、官署區與居住區嚴格分(fen)開,是(shi)一大創新(xin)。北(bei)(bei)宋呂大防在(zai)《隋(sui)都城(cheng)圖》題記中(zhong),曾稱贊大興城(cheng)的(de)(de)布局(ju)思(si)想:“隋(sui)氏(shi)設都,雖(sui)不(bu)(bu)能盡循先王(wang)之法,然畦分(fen)棋布,閭巷(xiang)皆中(zhong)繩墨,坊有墉,墉有門,逋亡奸偽無所容(rong)足。而朝廷官寺,居民市(shi)區不(bu)(bu)復相(xiang)參(can),亦(yi)一代(dai)之精制也。”清代(dai)徐松(song)也說:“自兩漢以后,至(zhi)于晉(jin)、齊(qi)、梁、陳,并有人家在(zai)宮闕(que)之間。隋(sui)文帝以為(wei)不(bu)(bu)便于事,于是(shi)皇(huang)(huang)城(cheng)之內惟(wei)列府寺,不(bu)(bu)使雜居,公私有辨(bian),風俗(su)齊(qi)整,實隋(sui)文之新(xin)意(yi)也。”
在大興城(cheng)(cheng)(cheng)的規劃和(he)興建中(zhong),對(dui)于環境美化和(he)給排水(shui)(shui)(shui)(shui)(shui)問題,也(ye)給予(yu)了高(gao)度的重視。整(zheng)個城(cheng)(cheng)(cheng)址位于渭水(shui)(shui)(shui)(shui)(shui)南(nan)岸,西傍灃河,東(dong)依灞水(shui)(shui)(shui)(shui)(shui)、浐水(shui)(shui)(shui)(shui)(shui),南(nan)對(dui)終南(nan)山。根據其地理環境和(he)河道情況,開鑿了三條水(shui)(shui)(shui)(shui)(shui)渠(qu)(qu)引水(shui)(shui)(shui)(shui)(shui)入城(cheng)(cheng)(cheng)。城(cheng)(cheng)(cheng)南(nan)為永安渠(qu)(qu)和(he)清明渠(qu)(qu),城(cheng)(cheng)(cheng)東(dong)為龍(long)首渠(qu)(qu),龍(long)首渠(qu)(qu)又分(fen)出兩條支渠(qu)(qu)。三條水(shui)(shui)(shui)(shui)(shui)渠(qu)(qu)都分(fen)別流經宮(gong)苑(yuan)再(zai)注入渭水(shui)(shui)(shui)(shui)(shui),不但可以解決給排水(shui)(shui)(shui)(shui)(shui)問題,而且可以進(jin)行生活物資的運輸。水(shui)(shui)(shui)(shui)(shui)渠(qu)(qu)兩岸種植(zhi)有柳樹,形成了“渠(qu)(qu)柳條條水(shui)(shui)(shui)(shui)(shui)面齊”的宜人(ren)景色。城(cheng)(cheng)(cheng)東(dong)南(nan)還開辟有曲(qu)江(jiang)“芙蓉(rong)園”,其“花卉周(zhou)環,煙水(shui)(shui)(shui)(shui)(shui)明媚,都人(ren)游(you)賞盛于中(zhong)秋(qiu)節。江(jiang)側菰蒲蔥翠,柳蔭四合,碧(bi)波紅蕖,湛然可愛”,是全城(cheng)(cheng)(cheng)的風景區(qu)和(he)旅游(you)區(qu)。
在大(da)興城(cheng)的規劃、設(she)計中(zhong),也還存(cun)在著嚴重(zhong)的缺陷。其突出者有三:
其(qi)(qi)一是沒有很好(hao)地(di)考慮當時社會發展的(de)需求(qiu),城市規模過大,超越了時代(dai)的(de)要求(qiu)。其(qi)(qi)城南(nan)(nan)四列里(li)坊,經過隋唐兩(liang)代(dai)三百多(duo)年的(de)時間,始終(zhong)沒有多(duo)少住戶,非常冷落荒涼。正如(ru)宋敏(min)求(qiu)所(suo)說(shuo):“自(zi)(zi)朱雀(que)門南(nan)(nan)第六(liu)橫街以南(nan)(nan),率無居人第宅(zhai)。”其(qi)(qi)注又云:“自(zi)(zi)興善(shan)寺以南(nan)(nan)四坊,東(dong)西盡郭,雖(sui)有居者,煙火不接,耕(geng)墾種植,阡陌相連。”
其(qi)二是(shi)大(da)興城的(de)道路(lu)(lu)雖然(ran)很寬,但全是(shi)土路(lu)(lu),雨雪時泥濘不堪,難(nan)以通行,有(you)時連上朝都得停止。為了排水(shui),路(lu)(lu)面都是(shi)中間較(jiao)高,兩側(ce)有(you)寬、深各兩米多的(de)水(shui)溝,但由于城內(nei)地形(xing)起(qi)伏較(jiao)大(da),排水(shui)仍有(you)困難(nan),以致暴雨后常(chang)有(you)坊墻倒塌,居(ju)民溺死的(de)事故發生。
其三是在漕運方面也存在著較(jiao)大的問題。有時漕運不通,即造成(cheng)糧食供應匱乏。為此,終于(yu)釀(niang)成(cheng)了都城的東遷。
在當時的(de)(de)(de)社會、經(jing)濟、科技條件下,大(da)興(xing)城(cheng)(cheng)(cheng)有如(ru)此規模(mo)的(de)(de)(de)建(jian)設和成(cheng)就,是(shi)值得人(ren)們贊頌的(de)(de)(de)。大(da)興(xing)城(cheng)(cheng)(cheng)的(de)(de)(de)設計(ji)和布局思(si)想,不但對中國(guo)后世的(de)(de)(de)都市建(jian)設有著很(hen)大(da)的(de)(de)(de)影響,而(er)且對日本、朝鮮的(de)(de)(de)都市建(jian)設也有著深刻的(de)(de)(de)影響。如(ru)日本飛鳥(niao)、奈良時代的(de)(de)(de)都城(cheng)(cheng)(cheng)藤原京、平城(cheng)(cheng)(cheng)京,就是(shi)仿效大(da)興(xing)城(cheng)(cheng)(cheng)的(de)(de)(de)布局特(te)點而(er)建(jian)造(zao)的(de)(de)(de)。平城(cheng)(cheng)(cheng)京東西三(san)十(shi)二町,南(nan)北(bei)三(san)十(shi)六町,每隔四町均有大(da)路相通(tong),形(xing)成(cheng)整(zheng)齊(qi)有序(xu)的(de)(de)(de)棋盤狀。宮城(cheng)(cheng)(cheng)也是(shi)位(wei)于城(cheng)(cheng)(cheng)北(bei)正(zheng)中,四周以官(guan)衙和貴族邸第圍繞(rao),明顯地(di)體(ti)現著大(da)興(xing)城(cheng)(cheng)(cheng)的(de)(de)(de)特(te)征。
又謂“新都”。是(shi)隋(sui)唐時期僅(jin)(jin)僅(jin)(jin)次于(yu)大(da)興(xing)(長安)的城(cheng)(cheng)(cheng)市它位于(yu)漢魏洛(luo)陽城(cheng)(cheng)(cheng)之西(xi)約(yue)十公里,北(bei)依邙山,南(nan)對龍門,地理位置十分優越。正(zheng)如李吉甫所說:“北(bei)據邙山,南(nan)直伊闕之口,洛(luo)水(shui)貫之,有河漢之象,東去故城(cheng)(cheng)(cheng)一十八里。”由于(yu)水(shui)陸(lu)交(jiao)通方便,自隋(sui)代至北(bei)宋(song),一直作為都城(cheng)(cheng)(cheng),成為一個政治、經濟(ji)和交(jiao)通的中心。
東(dong)(dong)(dong)京(jing)的(de)(de)營(ying)建(jian)是一(yi)個(ge)浩大(da)的(de)(de)工(gong)程(cheng)。據《隋書(shu)·食貨志》記載(zai):“始建(jian)東(dong)(dong)(dong)都(dou)(dou),以(yi)尚書(shu)令(ling)楊(yang)素為(wei)營(ying)作大(da)監,每月(yue)役(yi)(yi)丁二(er)百(bai)萬(wan)(wan)(wan)人(ren)(ren)。”《大(da)業雜記》中記載(zai):“初衛尉(wei)劉(liu)權(quan)、秘書(shu)丞韋(wei)萬(wan)(wan)(wan)頃(qing)總監筑宮城,一(yi)時布(bu)兵夫(fu),周匝四(si)面,有七(qi)十(shi)萬(wan)(wan)(wan)人(ren)(ren)。城周匝兩重,延(yan)袤(mao)三(san)十(shi)余(yu)里,高四(si)十(shi)六尺。六十(shi)日成。其(qi)內諸(zhu)殿基及(ji)諸(zhu)墻院,又役(yi)(yi)十(shi)余(yu)萬(wan)(wan)(wan)人(ren)(ren)。直東(dong)(dong)(dong)都(dou)(dou)土工(gong)監常役(yi)(yi)八十(shi)萬(wan)(wan)(wan)人(ren)(ren),其(qi)木工(gong)、瓦工(gong)、金工(gong)、石工(gong)又役(yi)(yi)十(shi)余(yu)萬(wan)(wan)(wan)人(ren)(ren)。”唐(tang)(tang)初張(zhang)玄素曾對唐(tang)(tang)太宗言(yan)及(ji)他所見(jian)(jian)營(ying)建(jian)東(dong)(dong)(dong)都(dou)(dou)的(de)(de)情(qing)況(kuang),說:“臣又嘗見(jian)(jian)隋室造殿,楹棟(dong)宏(hong)壯,大(da)木非隨(sui)近所有,多從豫章(今江西境)采來。二(er)千人(ren)(ren)曳(ye)一(yi)柱(zhu),其(qi)下(xia)施轂(gu),皆以(yi)生鐵(tie)為(wei)之(zhi),若用木輪,便(bian)即火(huo)出。鐵(tie)轂(gu)既生,行一(yi)二(er)里即有破壞,仍數百(bai)人(ren)(ren)別赍鐵(tie)轂(gu)以(yi)隨(sui)之(zhi),終日不過(guo)進三(san)二(er)十(shi)里。略計一(yi)柱(zhu),已用數十(shi)萬(wan)(wan)(wan)功,則余(yu)費又過(guo)于(yu)此。”從這些記載(zai),可以(yi)看到(dao)其(qi)用工(gong)量的(de)(de)大(da)致狀況(kuang)。建(jian)造大(da)興城的(de)(de)用工(gong)狀況(kuang),雖(sui)缺(que)乏史料(liao)記載(zai),但參照(zhao)有關東(dong)(dong)(dong)京(jing)的(de)(de)記載(zai),當與東(dong)(dong)(dong)京(jing)的(de)(de)用工(gong)數量相當。
東(dong)京規(gui)模(mo)略小(xiao)于(yu)(yu)大(da)興城(cheng)(cheng)。據(ju)勘探,它的(de)(de)東(dong)城(cheng)(cheng)墻長(chang)(chang)(chang)7312米,南(nan)(nan)城(cheng)(cheng)墻長(chang)(chang)(chang)7290米,北城(cheng)(cheng)墻長(chang)(chang)(chang)6138米,西(xi)城(cheng)(cheng)墻長(chang)(chang)(chang)6776米,總計(ji)周長(chang)(chang)(chang)27516米,合55里。平(ping)面呈南(nan)(nan)寬(kuan)北窄的(de)(de)不(bu)(bu)規(gui)則(ze)長(chang)(chang)(chang)方(fang)形。全(quan)城(cheng)(cheng)亦是由宮(gong)城(cheng)(cheng)、皇(huang)城(cheng)(cheng)、郭城(cheng)(cheng)所構成。洛水由西(xi)而東(dong)穿城(cheng)(cheng)而過,把城(cheng)(cheng)分為(wei)南(nan)(nan)北二區。由于(yu)(yu)地形的(de)(de)關系,東(dong)京不(bu)(bu)似大(da)興城(cheng)(cheng)那樣強調南(nan)(nan)北中軸線(xian)和完全(quan)對稱的(de)(de)布(bu)局(ju)方(fang)式,其(qi)宮(gong)城(cheng)(cheng)和皇(huang)城(cheng)(cheng)建于(yu)(yu)西(xi)北部,但整個規(gui)劃力求方(fang)正、整齊,仍(reng)與(yu)大(da)興城(cheng)(cheng)相似。
東京洛(luo)陽城的(de)營建
開鑿廣通渠工程
營(ying)建(jian)東京是宇文愷(kai)在城市(shi)建(jian)設(she)方面的另(ling)一個重大(da)成就。開(kai)皇(huang)四年(584年)六月,宇文愷(kai)又受命負責(ze)開(kai)鑿廣通(tong)渠工程。據記載:“隋(sui)主以渭(wei)水多沙,深淺(qian)不常,漕者苦之”,“詔太子左(zuo)庶子宇文愷(kai)帥水工鑿渠,引(yin)渭(wei)水,自大(da)興城東至(zhi)潼關三百余里,名曰廣通(tong)渠。漕運通(tong)利,關內賴之。”其后(hou),宇文愷(kai)出任(ren)萊州(今山東掖縣)刺史,“甚有能名”。
開皇六年閏八(ba)月,宇(yu)文愷(kai)(kai)之二兄上柱(zhu)國(guo)、杞國(guo)公宇(yu)文忻(xin)因謀反(fan)被誅,宇(yu)文愷(kai)(kai)也受株(zhu)連而解職(zhi),“除(chu)名于家,久不(bu)得調”。
宮城(cheng)(cheng)名紫微城(cheng)(cheng),宮城(cheng)(cheng)位于(yu)南(nan)北(bei)中軸線的北(bei)部,“東西(xi)四(si)(si)里(li)一(yi)百(bai)八十(shi)(shi)(shi)八步(bu)(bu),南(nan)北(bei)二里(li)八十(shi)(shi)(shi)五步(bu)(bu),周(zhou)(zhou)一(yi)十(shi)(shi)(shi)三(san)里(li)二百(bai)四(si)(si)十(shi)(shi)(shi)一(yi)步(bu)(bu),其(qi)(qi)(qi)崇四(si)(si)丈(zhang)八尺,以象(xiang)北(bei)辰藩衛。實測東西(xi)長2820.3米(含掖庭宮),南(nan)北(bei)寬1492.1米。城(cheng)(cheng)內有墻把宮城(cheng)(cheng)分隔(ge)成三(san)部分。宮城(cheng)(cheng)內有乾(qian)陽(yang)殿(dian)(dian)、大(da)業(ye)殿(dian)(dian)等(deng)數(shu)十(shi)(shi)(shi)座殿(dian)(dian)、閣(ge)、堂(tang)、院(yuan),極(ji)其(qi)(qi)(qi)富麗堂(tang)皇。中部是大(da)興宮,由大(da)興殿(dian)(dian)等(deng)數(shu)十(shi)(shi)(shi)座殿(dian)(dian)臺樓閣(ge)組(zu)成,是皇帝起居、聽(ting)政的場所。東部為(wei)東宮,專供(gong)太子居住和辦(ban)理政務(wu)。西(xi)部為(wei)掖庭宮,是安置宮女學習技藝的地(di)方(fang)。李吉甫稱:“(東京)宮室臺殿(dian)(dian),皆(jie)宇文愷(kai)所創也。愷(kai)巧思絕倫,因此(ci)制造頗窮奢麗,前代都邑(yi)莫(mo)之比焉。”其(qi)(qi)(qi)中以乾(qian)陽(yang)殿(dian)(dian)最(zui)為(wei)奢華(hua),是皇帝舉行大(da)典和接待重要外(wai)國使(shi)團的地(di)方(fang)。“殿(dian)(dian)基高九尺,從地(di)至鴟尾(房脊兩端的獸)高一(yi)百(bai)七十(shi)(shi)(shi)尺,十(shi)(shi)(shi)三(san)間二十(shi)(shi)(shi)九架,三(san)陛軒。文掍鏤(lou)檻,欒櫨百(bai)重,楶拱千構,云楣繡柱(zhu),華(hua)榱(cui)璧(bi)珰,窮軒甍之壯麗。其(qi)(qi)(qi)柱(zhu)大(da)二十(shi)(shi)(shi)四(si)(si)圍,倚井垂蓮,仰之者眩曜(yao)。南(nan)軒垂以珠絲網(wang)絡,下不至地(di)七尺,以防飛鳥。四(si)(si)面周(zhou)(zhou)以軒廊,坐宿衛兵。”“殿(dian)(dian)庭東南(nan)西(xi)南(nan)各有重樓,一(yi)懸(xuan)鐘,一(yi)懸(xuan)鼓(gu),刻(ke)漏(lou)即(ji)(ji)在樓下,隨刻(ke)漏(lou)則(ze)鳴(ming)鐘鼓(gu)。”宮城(cheng)(cheng)正(zheng)門(men)則(ze)天門(men),“門(men)上飛觀相夾,門(men)外(wai)即(ji)(ji)朝堂(tang)”。因其(qi)(qi)(qi)太奢,致武(wu)德四(si)(si)年(621年)唐高祖李淵令人焚毀(hui)另建。
形如偃(yan)月,謂之月陂(po)
宮城西面是上(shang)林西苑,又(you)名會通(tong)苑,在(zai)今洛陽澗(jian)西一帶。據《大業雜記》記載:“(大業)元(yuan)年夏五月西苑,周二百(bai)里,其內(nei)造(zao)(zao)十六(liu)院,屈曲繞龍鱗溝。”苑內(nei)引(yin)澗(jian)河匯水(shui)成(cheng)海(hai),周十余里,海(hai)中造(zao)(zao)蓬(peng)萊、方(fang)丈、瀛洲三(san)神山,高出水(shui)面百(bai)余尺,臺觀殿閣布置在(zai)山上(shang),風景(jing)非(fei)常(chang)壯觀。緣渠作十六(liu)院,門皆(jie)臨(lin)渠,堂殿樓觀,極為華麗。為了引(yin)洛水(shui)入苑,宇(yu)文(wen)愷還(huan)修筑(zhu)了月陂。據李吉甫《元(yuan)和郡縣圖志(zhi)》卷五記載:“洛水(shui),在(zai)(洛陽)縣西南(nan)三(san)里。西自苑內(nei)上(shang)陽之南(nan)彌漫東(dong)流(liu),宇(yu)文(wen)愷筑(zhu)斜堤束令(ling)東(dong)北(bei)流(liu)。當水(shui)沖,捺堰九折,形如(ru)偃(yan)月,謂之月陂。”
宮城(cheng)的(de)(de)東(dong)北面為含嘉城(cheng),城(cheng)里為含嘉倉(cang)(cang),是一座(zuo)(zuo)貯藏(zang)糧(liang)(liang)食的(de)(de)大型國家(jia)糧(liang)(liang)倉(cang)(cang)。據(ju)《大業雜記》記載:“大業元年(nian),煬(yang)帝建(jian)(jian)東(dong)都(dou)洛陽,在(zai)宮城(cheng)東(dong)建(jian)(jian)含嘉倉(cang)(cang)。”據(ju)1969年(nian)以來(lai)的(de)(de)考古發(fa)掘(jue),含嘉城(cheng)的(de)(de)總面積約(yue)43萬平方米(mi),四面有(you)城(cheng)墻,城(cheng)墻為挖槽夯(hang)筑而成。在(zai)倉(cang)(cang)城(cheng)的(de)(de)東(dong)北和(he)偏(pian)南地區,勘探出大小(xiao)不等的(de)(de)圓形或(huo)橢圓形的(de)(de)地下糧(liang)(liang)窖(jiao)287座(zuo)(zuo),估計(ji)全城(cheng)的(de)(de)地下糧(liang)(liang)窖(jiao)應(ying)在(zai)400座(zuo)(zuo)以上(shang)。由于東(dong)京(jing)漕運方便,又在(zai)含嘉城(cheng)內儲藏(zang)了(le)大量糧(liang)(liang)食,避免了(le)大興城(cheng)發(fa)生糧(liang)(liang)荒(huang)的(de)(de)問題(ti),使(shi)其糧(liang)(liang)食供應(ying)得到了(le)保障。
皇城(cheng)(cheng)(cheng)名太微城(cheng)(cheng)(cheng)(又稱子城(cheng)(cheng)(cheng)),亦稱南(nan)(nan)城(cheng)(cheng)(cheng)、寶(bao)城(cheng)(cheng)(cheng),在(zai)宮城(cheng)(cheng)(cheng)南(nan)(nan)面(mian),由一(yi)條橫街(jie)與(yu)宮城(cheng)(cheng)(cheng)相(xiang)隔,“東(dong)西五(wu)里(li)(li)一(yi)十(shi)七(qi)步,南(nan)(nan)北三(san)里(li)(li)二(er)百九十(shi)八(ba)步,周一(yi)十(shi)三(san)里(li)(li)二(er)百五(wu)十(shi)步,高三(san)丈七(qi)尺。實(shi)測東(dong)西長(chang)與(yu)宮城(cheng)(cheng)(cheng)相(xiang)同,南(nan)(nan)北寬為1843.6米。其(qi)城(cheng)(cheng)(cheng)曲(qu)折,以象南(nan)(nan)宮垣”。皇城(cheng)(cheng)(cheng)是(shi)軍政(zheng)機構和宗(zong)廟(miao)的所在(zai)地。“城(cheng)(cheng)(cheng)中南(nan)(nan)北七(qi)街(jie),東(dong)西五(wu)街(jie)。左(zuo)宗(zong)廟(miao),右社稷。百僚廨署(shu)列于其(qi)間,凡(fan)省六(liu),寺(si)九,臺一(yi),監(jian)四,衛十(shi)有八(ba)。東(dong)宮官屬,凡(fan)府一(yi),坊三(san),寺(si)三(san),率(lv)府十(shi)”。
郭城稱羅郭城、羅城、京城,隋時僅筑有(you)短(duan)垣,一(yi)(yi)(yi)說:“東(dong)(dong)西(xi)一(yi)(yi)(yi)十(shi)八里一(yi)(yi)(yi)百(bai)一(yi)(yi)(yi)十(shi)五(wu)步(bu),南(nan)(nan)(nan)(nan)北(bei)(bei)一(yi)(yi)(yi)十(shi)五(wu)里一(yi)(yi)(yi)百(bai)七十(shi)五(wu)步(bu),周六十(shi)七里,其(qi)崇(chong)一(yi)(yi)(yi)丈八尺”,實(shi)測(ce)東(dong)(dong)西(xi)長(chang)9721 米(mi)(mi),南(nan)(nan)(nan)(nan)北(bei)(bei)寬8651.7米(mi)(mi)。全(quan)城由南(nan)(nan)(nan)(nan)北(bei)(bei)向(xiang)大(da)(da)街(jie)(jie)十(shi)一(yi)(yi)(yi)條,東(dong)(dong)西(xi)向(xiang)大(da)(da)街(jie)(jie)十(shi)四條,劃分為一(yi)(yi)(yi)百(bai)零八個里坊(fang)(fang)(fang)和兩個商市,形(xing)(xing)成棋盤型(xing)的(de)(de)(de)布局(ju)(ju)。白居易有(you)詩云:“百(bai)千家似圍(wei)棋局(ju)(ju),十(shi)二街(jie)(jie)如種菜畦。”既形(xing)(xing)象(xiang)又貼切地描繪了大(da)(da)興城的(de)(de)(de)布局(ju)(ju)特征。二說:“東(dong)(dong)西(xi)五(wu)千六百(bai)十(shi)步(bu),南(nan)(nan)(nan)(nan)北(bei)(bei)五(wu)千四百(bai)七十(shi)步(bu)”,實(shi)測(ce)南(nan)(nan)(nan)(nan)北(bei)(bei)最長(chang)處7312米(mi)(mi),東(dong)(dong)西(xi)最寬處7290米(mi)(mi)。全(quan)城縱橫大(da)(da)街(jie)(jie)各十(shi)條,一(yi)(yi)(yi)般(ban)寬41米(mi)(mi),把全(quan)城劃分為“里一(yi)(yi)(yi)百(bai)三,市三”。這些里坊(fang)(fang)(fang)分布在北(bei)(bei)區(qu)的(de)(de)(de)東(dong)(dong)部和整個南(nan)(nan)(nan)(nan)區(qu),其(qi)中南(nan)(nan)(nan)(nan)區(qu)的(de)(de)(de)里坊(fang)(fang)(fang)與街(jie)(jie)道最整齊。里坊(fang)(fang)(fang)平面作(zuo)方形(xing)(xing)或長(chang)方形(xing)(xing),面積比(bi)大(da)(da)興城的(de)(de)(de)里坊(fang)(fang)(fang)略小,坊(fang)(fang)(fang)內辟十(shi)字形(xing)(xing)街(jie)(jie)道。由于(yu)里坊(fang)(fang)(fang)小街(jie)(jie)道窄,臨街(jie)(jie)開門的(de)(de)(de)住宅隨之(zhi)增多,這樣就(jiu)使城內各部分的(de)(de)(de)關系顯得比(bi)較緊(jin)湊(cou)。
城(cheng)中(zhong)的(de)(de)(de)(de)(de)街(jie)(jie)(jie)(jie)(jie)道都很寬(kuan)(kuan)(kuan)。通向(xiang)城(cheng)門(men)的(de)(de)(de)(de)(de)街(jie)(jie)(jie)(jie)(jie)道之(zhi)寬(kuan)(kuan)(kuan)度(du)都在百米(mi)以上;最寬(kuan)(kuan)(kuan)的(de)(de)(de)(de)(de)是界于(yu)宮城(cheng)和皇城(cheng)之(zhi)間(jian)的(de)(de)(de)(de)(de)橫(heng)街(jie)(jie)(jie)(jie)(jie),寬(kuan)(kuan)(kuan)達220米(mi)以上;位于(yu)南北中(zhong)軸線(xian)上的(de)(de)(de)(de)(de)主(zhu)干道朱雀大(da)街(jie)(jie)(jie)(jie)(jie)寬(kuan)(kuan)(kuan)150 米(mi);不通城(cheng)門(men)的(de)(de)(de)(de)(de)街(jie)(jie)(jie)(jie)(jie)道寬(kuan)(kuan)(kuan)42—68米(mi);最窄的(de)(de)(de)(de)(de)是四(si)周(zhou)沿城(cheng)墻內側的(de)(de)(de)(de)(de)順城(cheng)街(jie)(jie)(jie)(jie)(jie),寬(kuan)(kuan)(kuan)25米(mi)。里(li)坊(fang)都筑有坊(fang)墻,坊(fang)中(zhong)也(ye)有街(jie)(jie)(jie)(jie)(jie)道。大(da)的(de)(de)(de)(de)(de)里(li)坊(fang)四(si)面(mian)開四(si)個(ge)坊(fang)門(men),中(zhong)辟十字街(jie)(jie)(jie)(jie)(jie);小的(de)(de)(de)(de)(de)里(li)坊(fang)開東西二門(men),有一(yi)條橫(heng)街(jie)(jie)(jie)(jie)(jie)。這(zhe)些(xie)縱橫(heng)相(xiang)交的(de)(de)(de)(de)(de)街(jie)(jie)(jie)(jie)(jie)道形成一(yi)個(ge)交通網絡,井然有序。各大(da)街(jie)(jie)(jie)(jie)(jie)的(de)(de)(de)(de)(de)兩側都開有排水溝(gou),街(jie)(jie)(jie)(jie)(jie)道兩旁植(zhi)以榆、槐為(wei)主(zhu)的(de)(de)(de)(de)(de)行道樹,株行距整齊(qi)劃一(yi),使道路成為(wei)寬(kuan)(kuan)(kuan)廣筆直的(de)(de)(de)(de)(de)林蔭(yin)大(da)道,為(wei)城(cheng)市增添了(le)風采。
大興宮(gong)(gong)的(de)(de)建造布局天(tian)人合(he)一,從(cong)六坡(po)的(de)(de)高(gao)度看,地勢從(cong)北到南漸次降低。那么宮(gong)(gong)城所(suo)處的(de)(de)位置則相對(dui)較低。不把(ba)宮(gong)(gong)城設置在(zai)最高(gao)處另(ling)有原(yuan)委。根據(ju)天(tian)上(shang)星(xing)宿(su)的(de)(de)位置,最為尊貴的(de)(de)紫(zi)(zi)薇宮(gong)(gong)居于北天(tian)中央,它以北極為中樞,東、西兩藩共(gong)有十五(wu)顆星(xing)環抱著它。紫(zi)(zi)薇宮(gong)(gong)即皇(huang)宮(gong)(gong)的(de)(de)意思(si),皇(huang)帝(di)貴為天(tian)子,地上(shang)的(de)(de)君主和天(tian)上(shang)的(de)(de)星(xing)宿(su)應(ying)該相對(dui)應(ying),應(ying)此,只能把(ba)皇(huang)宮(gong)(gong)布置在(zai)北邊(bian)中央位置。而且北有渭河相倚,從(cong)防衛(wei)角度看,也(ye)具(ju)安全(quan)性。
但是(shi)這種追求理念的(de)設計似乎也有(you)缺陷。隋代(dai)的(de)皇宮(gong)(gong)(gong)(gong)(gong)——大(da)(da)(da)(da)興宮(gong)(gong)(gong)(gong)(gong)到(dao)唐(tang)(tang)朝繼續沿(yan)用,只是(shi)改名太(tai)極(ji)宮(gong)(gong)(gong)(gong)(gong)。而太(tai)極(ji)宮(gong)(gong)(gong)(gong)(gong)很快就(jiu)被大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong)所取代(dai),究其原因,就(jiu)是(shi)應(ying)為(wei)(wei)(wei)太(tai)極(ji)宮(gong)(gong)(gong)(gong)(gong)地(di)勢(shi)較(jiao)低,而長安城盛夏氣溫很高(gao)(gao),使得住(zhu)在(zai)太(tai)極(ji)宮(gong)(gong)(gong)(gong)(gong)有(you)“湫濕(shi)感”。為(wei)(wei)(wei)此從秦至唐(tang)(tang),每逢夏季,統(tong)治(zhi)(zhi)者(zhe)都要(yao)到(dao)夏宮(gong)(gong)(gong)(gong)(gong)去避暑(shu)。唐(tang)(tang)太(tai)宗(zong)選定長安城北禁苑中(zhong)龍首(shou)高(gao)(gao)地(di),營造大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong),為(wei)(wei)(wei)太(tai)上皇消(xiao)夏的(de)夏宮(gong)(gong)(gong)(gong)(gong)。后(hou)來(lai)唐(tang)(tang)高(gao)(gao)宗(zong)李治(zhi)(zhi)又接(jie)著(zhu)以為(wei)(wei)(wei)完成(cheng)的(de)大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong)為(wei)(wei)(wei)基礎(chu),進行(xing)大(da)(da)(da)(da)規模的(de)再(zai)建(jian)工程。大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong)的(de)正殿含元殿建(jian)成(cheng)后(hou),唐(tang)(tang)高(gao)(gao)宗(zong)便(bian)正式在(zai)大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong)聽(ting)政。此后(hou)二百余(yu)年,大(da)(da)(da)(da)明(ming)宮(gong)(gong)(gong)(gong)(gong)都是(shi)唐(tang)(tang)代(dai)主(zhu)要(yao)的(de)朝會之所,成(cheng)為(wei)(wei)(wei)唐(tang)(tang)王朝的(de)統(tong)治(zhi)(zhi)中(zhong)心和國家象征。
宇文愷的(de)(de)(de)(de)(de)一生,主(zhu)(zhu)要是(shi)擔任營造方面的(de)(de)(de)(de)(de)高級官員,主(zhu)(zhu)持過許多(duo)(duo)大型的(de)(de)(de)(de)(de)建(jian)(jian)筑工程(cheng),起著相當于工程(cheng)總(zong)指揮、總(zong)設計師和(he)總(zong)工程(cheng)師的(de)(de)(de)(de)(de)作(zuo)用(yong)。他在(zai)(zai)建(jian)(jian)筑方面取得了(le)許多(duo)(duo)重大的(de)(de)(de)(de)(de)成(cheng)就,有(you)(you)些成(cheng)就甚至具有(you)(you)劃(hua)時(shi)(shi)代的(de)(de)(de)(de)(de)意義。但也應(ying)該指出的(de)(de)(de)(de)(de)是(shi),在(zai)(zai)他設計和(he)主(zhu)(zhu)持的(de)(de)(de)(de)(de)工程(cheng)中,除了(le)開鑿廣通渠,客觀上有(you)(you)利(li)于國(guo)計民生外,其余大多(duo)(duo)是(shi)為了(le)滿(man)足統治者(zhe)(zhe)(zhe)的(de)(de)(de)(de)(de)統治需(xu)要,尤其是(shi)宮(gong)殿建(jian)(jian)筑,不顧勞民傷財,取悅帝王。如(ru)營造仁壽宮(gong)時(shi)(shi),“役(yi)使(shi)嚴急(ji),丁夫多(duo)(duo)死(si),疲頓顛(dian)仆,推填坑坎,覆以(yi)土石,因(yin)而筑為平地。死(si)者(zhe)(zhe)(zhe)以(yi)萬數(shu)”,“時(shi)(shi)天(tian)暑(shu),役(yi)夫死(si)者(zhe)(zhe)(zhe)相次于道(dao),楊素悉(xi)焚除之(zhi)”。營建(jian)(jian)東(dong)京(jing)(jing)時(shi)(shi),他“揣帝心在(zai)(zai)宏侈(chi),于是(shi)東(dong)京(jing)(jing)制度(du)窮極壯麗”。“東(dong)京(jing)(jing)官吏督役(yi)嚴急(ji),役(yi)丁死(si)者(zhe)(zhe)(zhe)什四五(wu),所司以(yi)車(che)載(zai)死(si)丁,東(dong)至城(cheng)皋(gao)(今河(he)南滎(ying)陽),北至河(he)陽(今河(he)南孟縣南),相望于道(dao)”。長城(cheng)之(zhi)役(yi),“死(si)者(zhe)(zhe)(zhe)十五(wu)六”。建(jian)(jian)仁壽宮(gong)和(he)東(dong)京(jing)(jing)的(de)(de)(de)(de)(de)工程(cheng),宇文愷雖掛的(de)(de)(de)(de)(de)是(shi)副職,但他是(shi)實際的(de)(de)(de)(de)(de)負責者(zhe)(zhe)(zhe),因(yin)此功過與他都有(you)(you)直接(jie)的(de)(de)(de)(de)(de)關系。