蜚聲中外的唐代京師長安,以及東都洛(luo)陽,實際上都是(shi)在(zai)隋代建(jian)造的,創建(jian)這(zhe)兩(liang)座歷史名城的第一功臣是(shi)杰出的建(jian)筑學家宇文愷。
宇文(wen)愷,字安樂(le),鮮卑族。西魏恭帝二年(555年)生(sheng)于長安。他出生(sheng)在北朝(chao)后期一個顯赫的豪門。
出生(sheng)在(zai)這樣一個(ge)家(jia)庭中的(de)宇文愷,二歲時就被贈爵雙泉縣伯,六歲時襲祖爵安平郡公(gong),但身(shen)在(zai)將(jiang)門(men)的(de)宇文愷卻不好(hao)弓馬,而喜好(hao)讀書(shu)。《隋書(shu)》本(ben)傳說“愷少有器(qi)局。家(jia)世武將(jiang),諸(zhu)兄并以弓馬自達,愷獨(du)好(hao)學(xue),博覽書(shu)記,解屬文,多伎藝,號為(wei)名父公(gong)子。”這段記載(zai)可窺(kui)知(zhi)他為(wei)學(xue)的(de)大致情況。
北周(zhou)(zhou)末,宇文愷累(lei)遷右侍(shi)上(shang)士、御正中(zhong)大(da)夫、儀同三司。大(da)象(xiang)二(er)年(580年),楊(yang)堅任北周(zhou)(zhou)宰相后,宇文愷又(you)被任命為上(shang)開府、匠師中(zhong)大(da)夫。據《唐六(liu)典》卷二(er)三“將作都水監”記載:“后周(zhou)(zhou)有匠師中(zhong)大(da)夫一人(ren),掌城(cheng)郭、宮(gong)室之制及(ji)諸(zhu)器物(wu)度量。”又(you)據考證,北周(zhou)(zhou)設有“匠師中(zhong)大(da)夫,一人(ren),正五命”。因(yin)此可以推知,當時年輕的宇文愷已經在建筑科(ke)學(xue)和工程管理方(fang)面嶄露鋒芒。
581年,楊堅建(jian)立隋(sui)(sui)(sui)朝,是(shi)為(wei)隋(sui)(sui)(sui)文(wen)(wen)帝。為(wei)了鞏固(gu)自己的(de)(de)統治(zhi)地位,他大(da)肆誅殺北周宗(zong)(zong)室(shi)宇(yu)(yu)文(wen)(wen)氏(shi),以(yi)(yi)清除北周殘余勢力(li)。宇(yu)(yu)文(wen)(wen)愷(kai)原也被(bei)定入誅殺之列。由于宇(yu)(yu)文(wen)(wen)愷(kai)家族與北周宗(zong)(zong)室(shi)有別,二兄宇(yu)(yu)文(wen)(wen)忻又擁戴隋(sui)(sui)(sui)文(wen)(wen)帝有功,加(jia)(jia)上(shang)他本人的(de)(de)才(cai)華深得隋(sui)(sui)(sui)文(wen)(wen)帝的(de)(de)賞識(shi),因而方幸免一死。隋(sui)(sui)(sui)文(wen)(wen)帝“修(xiu)宗(zong)(zong)廟”,宇(yu)(yu)文(wen)(wen)愷(kai)被(bei)起用(yong),任(ren)營(ying)宗(zong)(zong)廟副(fu)監、太(tai)子左(zuo)庶子,負責宗(zong)(zong)廟的(de)(de)興修(xiu)事務。宗(zong)(zong)廟建(jian)成(cheng)后,被(bei)加(jia)(jia)封為(wei)甑山縣公,邑千戶,隨后投入了隋(sui)(sui)(sui)代都(dou)(dou)城(cheng)(cheng)(cheng)大(da)興城(cheng)(cheng)(cheng)(今西安城(cheng)(cheng)(cheng))的(de)(de)營(ying)建(jian)工程(cheng)。隋(sui)(sui)(sui)朝建(jian)立之時,仍(reng)承襲北周以(yi)(yi)長安城(cheng)(cheng)(cheng)為(wei)京(jing)都(dou)(dou)。長安城(cheng)(cheng)(cheng)始建(jian)于漢代,已有近(jin)八百年的(de)(de)歷史(shi),城(cheng)(cheng)(cheng)市已顯(xian)得過于狹小(xiao),宮宇(yu)(yu)亦(yi)多朽蠹,加(jia)(jia)上(shang)供水、排水嚴重(zhong)(zhong)不暢,污水往往聚而不泄,生活用(yong)水受到嚴重(zhong)(zhong)污染,已經不能適(shi)應社會發展和人們(men)生活的(de)(de)需要。因此,隋(sui)(sui)(sui)文(wen)(wen)帝嫌其(qi)“制(zhi)度狹小(xiao),又宮內(nei)多妖異(yi)”,通(tong)直散(san)騎常(chang)侍(shi)庾季才(cai)也奏云(yun):“漢營(ying)此城(cheng)(cheng)(cheng),經今將八百歲,水皆咸(xian)鹵,不甚(shen)宜(yi)人。”于是(shi)決定另建(jian)新都(dou)(dou)。
開皇(huang)(huang)二年(nian)(582年(nian))六月,隋(sui)(sui)文(wen)帝(di)下詔(zhao):“此城(cheng)從(cong)漢,凋殘日久,屢為戰場,舊(jiu)經(jing)喪亂。今(jin)之宮(gong)(gong)室,事近權宜(yi),又非(fei)謀(mou)筮從(cong)龜,瞻星揆日,不(bu)足建(jian)(jian)皇(huang)(huang)王之邑,合(he)大(da)(da)(da)(da)眾所聚”,“今(jin)區(qu)宇寧一,陰陽順序,安安以遷,勿(wu)懷胥怨。龍首山川原秀(xiu)麗(li),卉物滋阜,卜(bu)食(shi)相(xiang)土,宜(yi)建(jian)(jian)都(dou)邑,定鼎之基永固(gu),無窮之業在(zai)斯。公(gong)私(si)府宅,規模遠(yuan)近,營(ying)構(gou)資費(fei),隨(sui)事條(tiao)奏。”隋(sui)(sui)文(wen)帝(di)下詔(zhao)于是“詔(zhao)左仆射(she)高颎、將(jiang)作(zuo)大(da)(da)(da)(da)匠劉龍、巨鹿郡(jun)公(gong)賀(he)婁子干、太府少卿高龍叉等創造(zao)新(xin)都(dou)”。“以太子左庶(shu)子宇文(wen)愷(kai)有巧思,領營(ying)新(xin)都(dou)副監”。時高颎雖為大(da)(da)(da)(da)監,不(bu)過(guo)總領大(da)(da)(da)(da)綱,而規模計劃皆(jie)出自宇文(wen)愷(kai)。由于楊(yang)(yang)堅(jian)在(zai)北周時曾被封為大(da)(da)(da)(da)興郡(jun)公(gong),故(gu)新(xin)都(dou)命名為大(da)(da)(da)(da)興城(cheng)(今(jin)陜(shan)西(xi)西(xi)安)。開皇(huang)(huang)三(san)(san)年(nian),新(xin)都(dou)建(jian)(jian)成,而倉廩尚虛,需要大(da)(da)(da)(da)量(liang)轉運(yun)關東(dong)米粟,渭水多沙,不(bu)便(bian)漕運(yun)。四年(nian),下詔(zhao)興建(jian)(jian)漕渠,令宇文(wen)愷(kai)率(lv)領水工鑿渠,引渭水通黃河(he),自大(da)(da)(da)(da)興城(cheng)東(dong)至潼關三(san)(san)百余里,名叫廣通渠。渠成后,轉運(yun)便(bian)利,隋(sui)(sui)唐關中的(de)富庶(shu)頗(po)得益于此。其后,他受到(dao)其兄宇文(wen)忻被殺事件的(de)牽(qian)連,一度罷官居家。開皇(huang)(huang)十三(san)(san)年(nian),隋(sui)(sui)文(wen)帝(di)要在(zai)岐州(今(jin)陜(shan)西(xi)鳳翔)建(jian)(jian)仁(ren)壽(shou)宮(gong)(gong),經(jing)右仆射(she)楊(yang)(yang)素推薦,文(wen)帝(di)任命愷(kai)為檢校將(jiang)作(zuo)大(da)(da)(da)(da)匠,后又拜為仁(ren)壽(shou)宮(gong)(gong)監、將(jiang)作(zuo)少監。在(zai)楊(yang)(yang)素主持(chi)下,仁(ren)壽(shou)宮(gong)(gong)建(jian)(jian)造(zao)得非(fei)常華麗(li),成為隋(sui)(sui)文(wen)帝(di)經(jing)常臨幸的(de)別宮(gong)(gong)。
開皇十三年(nian)(593年(nian))二月,隋文(wen)帝令楊(yang)素(su)在(zai)岐(qi)州(今陜西鳳翔)北營造(zao)仁(ren)(ren)(ren)壽宮(gong)(gong)。楊(yang)素(su)以宇(yu)文(wen)愷有巧思,“奏前萊州刺史宇(yu)文(wen)愷檢(jian)校將(jiang)作大(da)匠”,負責仁(ren)(ren)(ren)壽宮(gong)(gong)工程的籌劃和設計。“于是夷山堙(yin)谷以立宮(gong)(gong)殿,崇(chong)臺累榭,宛轉(zhuan)相(xiang)屬”,整個(ge)宮(gong)(gong)殿區(qu)“制度壯麗”,是一組極其雄偉的宮(gong)(gong)殿建筑群。開皇十五年(nian)三月,仁(ren)(ren)(ren)壽宮(gong)(gong)建成,宇(yu)文(wen)愷被任命(ming)為仁(ren)(ren)(ren)壽宮(gong)(gong)監,授儀同(tong)三司,接著又被任命(ming)為將(jiang)作少監。
仁壽二年(nian)(602年(nian))八月,隋文(wen)(wen)帝皇(huang)后獨孤氏卒。閏十月,楊(yang)素和宇文(wen)(wen)愷受命營造(zao)皇(huang)陵(ling)太陵(ling)。獨孤皇(huang)后葬后,宇文(wen)(wen)愷復爵安平郡公,邑千戶。
仁壽(shou)四(si)年七(qi)月,隋煬帝楊廣繼位。鑒于(yu)大興城(cheng)位置偏西,又(you)水(shui)陸交(jiao)通不便,也為(wei)了更進一步(bu)加強對河(he)北、山(shan)東以(yi)及江淮地(di)(di)區的控制,決定在洛陽(yang)(yang)故都附(fu)近建造(zao)新城(cheng),作為(wei)東京(jing)。十(shi)一月癸(gui)丑(chou),隋煬帝在巡幸洛陽(yang)(yang)時下詔說,洛陽(yang)(yang)的地(di)(di)理(li)位置“控以(yi)三河(he),固以(yi)四(si)塞(sai),水(shui)陸通,貢賦(fu)等”,“今可于(yu)伊、洛營建東京(jing),便即設(she)官分職,以(yi)為(wei)民(min)極也”。
據《隋書(shu)·煬帝紀》記載(zai),大(da)(da)(da)業元(yuan)年(605年)三月(yue)丁未,隋煬帝“詔尚(shang)書(shu)令楊素、納言楊達、將(jiang)作(zuo)大(da)(da)(da)匠宇文愷(kai)營建東京,徙(xi)豫州郭下居人以(yi)實之(zhi)(zhi)”。又(you)(you)據《資治通鑒》卷一八零記載(zai),“每月(yue),役丁二百萬人。徙(xi)洛(luo)(luo)州郭內(nei)居民,及(ji)諸(zhu)州富商(shang)大(da)(da)(da)賈數萬戶以(yi)實之(zhi)(zhi)”。大(da)(da)(da)業二年春正月(yue)辛酉,“東京成”,其(qi)營建過(guo)程前(qian)后僅歷(li)十個月(yue),是(shi)又(you)(you)一座在短時(shi)間(jian)內(nei)經周密規劃、設計(ji)、建造而成的大(da)(da)(da)型城市。在營建東京時(shi),宇文愷(kai)“揣帝心在宏侈,于是(shi)東京制度窮極壯麗”。故此宇文愷(kai)博得隋煬帝的歡心,被進位開(kai)府儀(yi)同三司。其(qi)間(jian),宇文愷(kai)還(huan)受命(ming)在河南(nan)郡壽安縣(今河南(nan)宜陽)營造顯仁(ren)宮,“南(nan)接皁澗,北跨洛(luo)(luo)濱”,為此,曾“發大(da)(da)(da)江之(zhi)(zhi)南(nan)、五(wu)嶺以(yi)北奇材異(yi)石(shi),輸之(zhi)(zhi)洛(luo)(luo)陽;又(you)(you)求海內(nei)嘉木異(yi)草,珍禽奇獸,以(yi)實園(yuan)苑”。
隋煬帝楊廣即位后,要營(ying)建洛(luo)陽,又以(yi)愷為(wei)(wei)(wei)營(ying)東都副監,后遷將作大匠(jiang)。宇文(wen)愷把東都建筑(zhu)得極其壯麗,因(yin)此被(bei)升為(wei)(wei)(wei)工(gong)部尚(shang)書。他曾(ceng)經建造大帳,帳下可以(yi)容(rong)納(na)數千人(ren)。又造觀風行殿,殿上可以(yi)容(rong)納(na)侍(shi)衛數百(bai)人(ren),行殿下裝輪軸,可以(yi)迅速拆卸(xie)和(he)拼合。他曾(ceng)建議按古制建筑(zhu)明(ming)堂,“下為(wei)(wei)(wei)方堂,堂有五室(shi),上為(wei)(wei)(wei)圓(yuan)觀,觀有四門”,并曾(ceng)用木料(liao)制作了模型。雖然(ran)沒有興建,卻表現了他的(de)巧思和(he)學(xue)識的(de)淵博。大業八(ba)年(612年),宇文(wen)愷卒。
宇(yu)文愷在建(jian)筑學方面(mian)的(de)著述有《東(dong)都圖(tu)(tu)記》20卷,《明(ming)堂(tang)圖(tu)(tu)議(yi)》2卷,《釋疑》1卷,均(jun)見(jian)行于世(shi)。但除《明(ming)堂(tang)圖(tu)(tu)議(yi)》的(de)部分內容保存在《隋書·宇(yu)文愷傳》、《北史(shi)·宇(yu)文貴傳》和《資治通鑒》等史(shi)籍中外,其(qi)他的(de)后來(lai)都亡佚了,這實(shi)是建(jian)筑學史(shi)上的(de)一大損(sun)失。
政治(zhi)、經濟、文化中心
大(da)興(xing)城(cheng)的(de)營建(jian),史(shi)稱“制(zhi)(zhi)度多出于高颎”,“高颎雖(sui)總大(da)綱(gang),凡所(suo)規畫(hua),皆出于愷”。宋代的(de)宋敏求(qiu)在《長安志(zhi)》中也說在隋大(da)興(xing)城(cheng)興(xing)建(jian)時,“命(ming)左(zuo)(zuo)仆射高颎總領(ling)其(qi)事(shi)(shi),太子左(zuo)(zuo)庶子宇文愷創制(zhi)(zhi)規模,將(jiang)作大(da)匠劉龍、工部尚(shang)書(shu)巨鹿(lu)郡公賀樓(婁)子干、大(da)(太)府少(shao)卿尚(shang)龍義并充使營建(jian)”。可見高颎主(zhu)要是(shi)(shi)提出都城(cheng)的(de)總的(de)制(zhi)(zhi)度,并負(fu)責總的(de)施建(jian)方針,而具體的(de)規劃(hua)、設計則是(shi)(shi)由(you)宇文愷完成的(de),其(qi)他的(de)副使主(zhu)要是(shi)(shi)協(xie)助負(fu)責施工和(he)材料管理諸(zhu)事(shi)(shi)務。
大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng)的(de)(de)(de)興(xing)(xing)建(jian)(jian),不是在(zai)舊有基(ji)礎上進行改建(jian)(jian)、擴建(jian)(jian)而(er)成的(de)(de)(de)城(cheng)(cheng)(cheng)(cheng)市(shi),而(er)是在(zai)短時間內按周密(mi)規(gui)(gui)劃興(xing)(xing)建(jian)(jian)而(er)成的(de)(de)(de)嶄新(xin)城(cheng)(cheng)(cheng)(cheng)市(shi)。全城(cheng)(cheng)(cheng)(cheng)由宮(gong)城(cheng)(cheng)(cheng)(cheng)、皇(huang)(huang)城(cheng)(cheng)(cheng)(cheng)和(he)郭城(cheng)(cheng)(cheng)(cheng)組(zu)成,先建(jian)(jian)宮(gong)城(cheng)(cheng)(cheng)(cheng),后建(jian)(jian)皇(huang)(huang)城(cheng)(cheng)(cheng)(cheng),最后建(jian)(jian)郭城(cheng)(cheng)(cheng)(cheng)。開皇(huang)(huang)二年(582年)六月(yue)開始(shi)興(xing)(xing)建(jian)(jian),十二月(yue)基(ji)本竣工命名大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng),次(ci)年三月(yue)即正式遷(qian)入使用,前后僅九個月(yue),其建(jian)(jian)設速(su)度之快實(shi)令人驚嘆。整個工程的(de)(de)(de)規(gui)(gui)劃、設計(ji)、人力、物(wu)力的(de)(de)(de)組(zu)織(zhi)和(he)管理都應是相(xiang)當精細(xi)和(he)嚴謹的(de)(de)(de)。在(zai)規(gui)(gui)劃設計(ji)和(he)建(jian)(jian)設施工中,還得(de)考(kao)慮地(di)形、水(shui)源、交(jiao)通、軍(jun)事防御、環境美化、城(cheng)(cheng)(cheng)(cheng)市(shi)管理、市(shi)場供需等(deng)(deng)的(de)(de)(de)配套(tao),以及都城(cheng)(cheng)(cheng)(cheng)作為政(zheng)治、軍(jun)事、經濟(ji)、文化中心的(de)(de)(de)特點等(deng)(deng)諸多(duo)方(fang)面的(de)(de)(de)因(yin)素,解決一系列復雜(za)的(de)(de)(de)問題。因(yin)此大興(xing)(xing)城(cheng)(cheng)(cheng)(cheng)的(de)(de)(de)興(xing)(xing)建(jian)(jian)標(biao)志著當時的(de)(de)(de)中國所達到的(de)(de)(de)經濟(ji)和(he)科學技(ji)術(shu)水(shui)平。
有(you)人曾(ceng)列舉世(shi)界(jie)古代十(shi)座城(cheng)市(shi)的(de)面(mian)(mian)(mian)(mian)積(ji)(ji)進行(xing)比(bi)較(jiao):(1)隋大興城(cheng)(唐(tang)長(chang)安城(cheng)),583年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)84.1平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(2)北(bei)魏洛(luo)陽城(cheng),493年(nian)擴建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)100平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(3)明清北(bei)京(jing)(jing)城(cheng),1421—1553年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)60.2平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(4)元(yuan)大都,1267年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)50平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(5)隋唐(tang)東京(jing)(jing)(洛(luo)陽城(cheng)),605年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)45.2平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(6)明南京(jing)(jing),1366年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)43平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(7)漢長(chang)安(內城(cheng)),建(jian)于公(gong)(gong)(gong)元(yuan)前202年(nian),面(mian)(mian)(mian)(mian)積(ji)(ji)35平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(8)巴格達,800年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)30.44平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(9)羅馬,300年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)13.68平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li);(10)拜占(zhan)庭(ting),447年(nian)建(jian),面(mian)(mian)(mian)(mian)積(ji)(ji)11.99平(ping)(ping)方(fang)(fang)(fang)公(gong)(gong)(gong)里(li)(li)(li)。從上(shang)(shang)所列可(ke)以看到,中國(guo)古代都市(shi)的(de)規模之大在世(shi)界(jie)上(shang)(shang)是無與倫比(bi)的(de)。
大興城(cheng)(cheng)的(de)(de)規劃吸取了曹(cao)魏鄴(ye)城(cheng)(cheng)(故址(zhi)在(zai)今河北(bei)臨漳鄴(ye)鎮東(dong))、北(bei)魏洛陽城(cheng)(cheng)的(de)(de)經驗(yan),在(zai)方整對稱的(de)(de)原則下,沿著南北(bei)中軸線,將(jiang)宮(gong)城(cheng)(cheng)和(he)皇城(cheng)(cheng)置于(yu)全城(cheng)(cheng)的(de)(de)主要地位(wei),郭城(cheng)(cheng)則圍繞在(zai)宮(gong)城(cheng)(cheng)和(he)皇城(cheng)(cheng)的(de)(de)東(dong)、西、南三面。分區整齊(qi)(qi)明確,象征(zheng)著皇權(quan)的(de)(de)威嚴(yan),充分體現了中國古代京都規劃和(he)布局(ju)的(de)(de)獨特風格,反映了統治者專制集權(quan)的(de)(de)思想和(he)要求。特別是(shi)把宮(gong)室(shi)、官(guan)署區與(yu)居住區嚴(yan)格分開,是(shi)一(yi)大創新。北(bei)宋呂大防(fang)在(zai)《隋(sui)都城(cheng)(cheng)圖》題記中,曾稱贊(zan)大興城(cheng)(cheng)的(de)(de)布局(ju)思想:“隋(sui)氏(shi)設都,雖不(bu)(bu)能盡循先王之(zhi)(zhi)法,然畦分棋布,閭巷皆中繩墨,坊有墉(yong),墉(yong)有門,逋亡奸偽無所(suo)容足(zu)。而朝廷官(guan)寺,居民市區不(bu)(bu)復相參,亦(yi)一(yi)代之(zhi)(zhi)精制也。”清(qing)代徐松也說:“自兩漢以后(hou),至于(yu)晉(jin)、齊(qi)(qi)、梁、陳(chen),并有人家在(zai)宮(gong)闕之(zhi)(zhi)間。隋(sui)文帝以為(wei)不(bu)(bu)便于(yu)事(shi),于(yu)是(shi)皇城(cheng)(cheng)之(zhi)(zhi)內惟列府寺,不(bu)(bu)使雜居,公(gong)私有辨,風俗齊(qi)(qi)整,實隋(sui)文之(zhi)(zhi)新意(yi)也。”
在大(da)興(xing)城(cheng)(cheng)的(de)(de)(de)(de)規劃和(he)興(xing)建中(zhong),對于環(huan)境美(mei)化(hua)和(he)給(gei)排水(shui)(shui)(shui)問題(ti),也給(gei)予了(le)高度(du)的(de)(de)(de)(de)重視。整個(ge)城(cheng)(cheng)址位于渭(wei)水(shui)(shui)(shui)南岸,西傍灃河,東依灞水(shui)(shui)(shui)、浐水(shui)(shui)(shui),南對終(zhong)南山(shan)。根(gen)據其地(di)理環(huan)境和(he)河道情況,開鑿了(le)三條水(shui)(shui)(shui)渠(qu)(qu)(qu)(qu)引水(shui)(shui)(shui)入城(cheng)(cheng)。城(cheng)(cheng)南為(wei)永(yong)安渠(qu)(qu)(qu)(qu)和(he)清(qing)明(ming)渠(qu)(qu)(qu)(qu),城(cheng)(cheng)東為(wei)龍首(shou)渠(qu)(qu)(qu)(qu),龍首(shou)渠(qu)(qu)(qu)(qu)又分(fen)出兩條支渠(qu)(qu)(qu)(qu)。三條水(shui)(shui)(shui)渠(qu)(qu)(qu)(qu)都(dou)分(fen)別(bie)流經宮苑再注入渭(wei)水(shui)(shui)(shui),不但可(ke)以解決給(gei)排水(shui)(shui)(shui)問題(ti),而且可(ke)以進行生活(huo)物資的(de)(de)(de)(de)運輸。水(shui)(shui)(shui)渠(qu)(qu)(qu)(qu)兩岸種植有柳樹,形成(cheng)了(le)“渠(qu)(qu)(qu)(qu)柳條條水(shui)(shui)(shui)面齊”的(de)(de)(de)(de)宜人(ren)景色。城(cheng)(cheng)東南還(huan)開辟有曲江“芙蓉園”,其“花卉(hui)周環(huan),煙水(shui)(shui)(shui)明(ming)媚,都(dou)人(ren)游賞(shang)盛于中(zhong)秋節。江側菰蒲蔥翠,柳蔭四合,碧波紅(hong)蕖,湛然(ran)可(ke)愛”,是全城(cheng)(cheng)的(de)(de)(de)(de)風景區和(he)旅游區。
在大興城(cheng)的規劃、設計中,也還(huan)存在著嚴重的缺陷。其突出者有(you)三:
其一(yi)是沒(mei)有很好地考慮當(dang)時(shi)社會(hui)發展的需求(qiu),城(cheng)市規模過大,超(chao)越(yue)了時(shi)代(dai)的要求(qiu)。其城(cheng)南四(si)列里坊,經過隋唐兩代(dai)三百多年的時(shi)間,始終沒(mei)有多少住(zhu)戶,非常冷落荒涼。正如宋敏(min)求(qiu)所(suo)說(shuo):“自朱雀門南第(di)六橫街以(yi)南,率無(wu)居(ju)人第(di)宅。”其注(zhu)又云:“自興善寺(si)以(yi)南四(si)坊,東西盡郭,雖有居(ju)者(zhe),煙火不接,耕墾種植,阡(qian)陌相連。”
其二(er)是(shi)(shi)大興城(cheng)的道路雖然很寬(kuan),但全是(shi)(shi)土路,雨雪時(shi)(shi)泥濘(ning)不堪,難(nan)(nan)以(yi)通行,有時(shi)(shi)連上(shang)朝都得停止。為了排水(shui),路面都是(shi)(shi)中間較高,兩(liang)側有寬(kuan)、深各(ge)兩(liang)米多的水(shui)溝(gou),但由于城(cheng)內地形起伏較大,排水(shui)仍有困難(nan)(nan),以(yi)致暴雨后常有坊(fang)墻倒塌,居民溺死(si)的事故(gu)發生。
其三(san)是(shi)在漕運(yun)方面也存在著較大的問題。有時漕運(yun)不通,即造成糧食供應匱乏。為(wei)此,終于釀成了(le)都城的東遷。
在當時的(de)(de)(de)(de)社會(hui)、經濟、科技條件下,大興城(cheng)有(you)(you)如(ru)此規模的(de)(de)(de)(de)建(jian)設(she)(she)和成就,是(shi)值(zhi)得人們(men)贊(zan)頌的(de)(de)(de)(de)。大興城(cheng)的(de)(de)(de)(de)設(she)(she)計和布局(ju)思想,不但對中國后世(shi)的(de)(de)(de)(de)都(dou)市建(jian)設(she)(she)有(you)(you)著很大的(de)(de)(de)(de)影響(xiang),而且對日(ri)(ri)本、朝鮮的(de)(de)(de)(de)都(dou)市建(jian)設(she)(she)也有(you)(you)著深刻的(de)(de)(de)(de)影響(xiang)。如(ru)日(ri)(ri)本飛鳥、奈良時代的(de)(de)(de)(de)都(dou)城(cheng)藤原京、平城(cheng)京,就是(shi)仿(fang)效大興城(cheng)的(de)(de)(de)(de)布局(ju)特點(dian)而建(jian)造的(de)(de)(de)(de)。平城(cheng)京東西(xi)三十二町(ding),南北三十六町(ding),每(mei)隔四(si)町(ding)均有(you)(you)大路相通,形成整齊有(you)(you)序的(de)(de)(de)(de)棋盤狀。宮城(cheng)也是(shi)位于(yu)城(cheng)北正中,四(si)周以官衙和貴族邸第圍(wei)繞,明顯地體(ti)現著大興城(cheng)的(de)(de)(de)(de)特征。
又謂“新都”。是隋唐(tang)時(shi)期僅僅次于大(da)興(長安(an))的(de)城市(shi)它位(wei)于漢魏洛陽城之(zhi)西約十(shi)公里,北(bei)依邙山,南(nan)對(dui)龍門(men),地理(li)位(wei)置(zhi)十(shi)分優越。正如李(li)吉甫所說:“北(bei)據邙山,南(nan)直伊闕之(zhi)口,洛水貫之(zhi),有河漢之(zhi)象,東去故城一十(shi)八里。”由于水陸交通(tong)方便,自隋代至北(bei)宋,一直作(zuo)為(wei)(wei)都城,成為(wei)(wei)一個政治、經濟和交通(tong)的(de)中(zhong)心。
東(dong)(dong)京的(de)營建(jian)(jian)是一(yi)個浩大(da)(da)(da)(da)的(de)工(gong)(gong)程(cheng)。據《隋書(shu)·食貨志》記(ji)載(zai):“始建(jian)(jian)東(dong)(dong)都,以(yi)尚書(shu)令楊(yang)素(su)為(wei)(wei)營作大(da)(da)(da)(da)監,每(mei)月役(yi)(yi)丁二(er)(er)百(bai)萬(wan)人(ren)。”《大(da)(da)(da)(da)業雜(za)記(ji)》中記(ji)載(zai):“初衛尉劉權、秘書(shu)丞韋萬(wan)頃總監筑(zhu)宮城,一(yi)時(shi)布兵夫,周(zhou)匝四(si)面,有(you)七十(shi)(shi)萬(wan)人(ren)。城周(zhou)匝兩重,延袤三(san)十(shi)(shi)余(yu)(yu)里(li),高(gao)四(si)十(shi)(shi)六尺。六十(shi)(shi)日成。其(qi)(qi)內諸殿基及諸墻(qiang)院,又(you)役(yi)(yi)十(shi)(shi)余(yu)(yu)萬(wan)人(ren)。直東(dong)(dong)都土工(gong)(gong)監常(chang)役(yi)(yi)八十(shi)(shi)萬(wan)人(ren),其(qi)(qi)木工(gong)(gong)、瓦(wa)工(gong)(gong)、金工(gong)(gong)、石工(gong)(gong)又(you)役(yi)(yi)十(shi)(shi)余(yu)(yu)萬(wan)人(ren)。”唐初張玄素(su)曾對(dui)唐太宗言(yan)及他所見營建(jian)(jian)東(dong)(dong)都的(de)情況,說:“臣又(you)嘗見隋室造殿,楹棟宏壯,大(da)(da)(da)(da)木非隨近(jin)所有(you),多(duo)從(cong)豫(yu)章(今江西境)采來。二(er)(er)千人(ren)曳一(yi)柱(zhu),其(qi)(qi)下施轂(gu),皆以(yi)生鐵(tie)為(wei)(wei)之,若用木輪(lun),便(bian)即火出。鐵(tie)轂(gu)既生,行一(yi)二(er)(er)里(li)即有(you)破壞(huai),仍(reng)數(shu)百(bai)人(ren)別赍(ji)鐵(tie)轂(gu)以(yi)隨之,終日不過(guo)進三(san)二(er)(er)十(shi)(shi)里(li)。略計一(yi)柱(zhu),已用數(shu)十(shi)(shi)萬(wan)功,則(ze)余(yu)(yu)費(fei)又(you)過(guo)于此。”從(cong)這些(xie)記(ji)載(zai),可(ke)以(yi)看到(dao)其(qi)(qi)用工(gong)(gong)量的(de)大(da)(da)(da)(da)致(zhi)狀況。建(jian)(jian)造大(da)(da)(da)(da)興城的(de)用工(gong)(gong)狀況,雖缺乏史(shi)料記(ji)載(zai),但參照有(you)關東(dong)(dong)京的(de)記(ji)載(zai),當與東(dong)(dong)京的(de)用工(gong)(gong)數(shu)量相當。
東(dong)京規(gui)模略小于大(da)興城(cheng)(cheng)。據勘(kan)探,它的東(dong)城(cheng)(cheng)墻(qiang)長7312米(mi)(mi),南(nan)(nan)城(cheng)(cheng)墻(qiang)長7290米(mi)(mi),北(bei)(bei)城(cheng)(cheng)墻(qiang)長6138米(mi)(mi),西(xi)城(cheng)(cheng)墻(qiang)長6776米(mi)(mi),總計周長27516米(mi)(mi),合(he)55里(li)。平(ping)面呈南(nan)(nan)寬北(bei)(bei)窄的不(bu)規(gui)則(ze)長方形。全城(cheng)(cheng)亦是由宮(gong)城(cheng)(cheng)、皇城(cheng)(cheng)、郭城(cheng)(cheng)所構(gou)成。洛水由西(xi)而(er)東(dong)穿城(cheng)(cheng)而(er)過,把城(cheng)(cheng)分為南(nan)(nan)北(bei)(bei)二(er)區。由于地形的關(guan)系,東(dong)京不(bu)似大(da)興城(cheng)(cheng)那(nei)樣強(qiang)調南(nan)(nan)北(bei)(bei)中軸線和完(wan)全對(dui)稱的布局方式,其宮(gong)城(cheng)(cheng)和皇城(cheng)(cheng)建于西(xi)北(bei)(bei)部,但(dan)整(zheng)個(ge)規(gui)劃力(li)求方正、整(zheng)齊(qi),仍與大(da)興城(cheng)(cheng)相似。
東京(jing)洛陽城的(de)營建(jian)
開鑿廣通渠工程
營建(jian)東京是宇(yu)文愷在(zai)城市建(jian)設方面(mian)的(de)另一個重(zhong)大(da)成就(jiu)。開(kai)皇四(si)年(584年)六(liu)月,宇(yu)文愷又受命負責開(kai)鑿(zao)廣(guang)通渠(qu)工(gong)程。據記載:“隋(sui)主(zhu)以渭水(shui)多沙,深淺不常,漕者苦之”,“詔太(tai)子(zi)左庶子(zi)宇(yu)文愷帥(shuai)水(shui)工(gong)鑿(zao)渠(qu),引渭水(shui),自大(da)興(xing)城東至(zhi)潼(tong)關(guan)三百余里,名(ming)曰廣(guang)通渠(qu)。漕運通利(li),關(guan)內賴(lai)之。”其后,宇(yu)文愷出(chu)任萊州(今山東掖縣)刺史,“甚(shen)有能(neng)名(ming)”。
開(kai)皇六年閏八月(yue),宇文愷之二兄(xiong)上柱國、杞國公宇文忻因謀(mou)反被誅,宇文愷也受株連而解職,“除(chu)名于家,久不得調”。
宮城(cheng)名紫微(wei)城(cheng),宮城(cheng)位(wei)于(yu)南(nan)(nan)(nan)北(bei)(bei)中(zhong)軸線(xian)的(de)北(bei)(bei)部(bu)(bu),“東(dong)西四(si)里(li)一(yi)(yi)百(bai)八十(shi)(shi)(shi)(shi)(shi)八步(bu)(bu),南(nan)(nan)(nan)北(bei)(bei)二(er)里(li)八十(shi)(shi)(shi)(shi)(shi)五步(bu)(bu),周一(yi)(yi)十(shi)(shi)(shi)(shi)(shi)三(san)里(li)二(er)百(bai)四(si)十(shi)(shi)(shi)(shi)(shi)一(yi)(yi)步(bu)(bu),其(qi)崇(chong)四(si)丈八尺(chi)(chi),以(yi)(yi)象北(bei)(bei)辰藩衛。實測東(dong)西長(chang)2820.3米(含掖庭(ting)(ting)宮),南(nan)(nan)(nan)北(bei)(bei)寬1492.1米。城(cheng)內有(you)(you)墻把宮城(cheng)分(fen)隔(ge)成三(san)部(bu)(bu)分(fen)。宮城(cheng)內有(you)(you)乾(qian)陽殿(dian)(dian)、大(da)(da)(da)業殿(dian)(dian)等數十(shi)(shi)(shi)(shi)(shi)座殿(dian)(dian)、閣、堂(tang)、院(yuan),極(ji)其(qi)富麗堂(tang)皇。中(zhong)部(bu)(bu)是(shi)大(da)(da)(da)興(xing)宮,由(you)大(da)(da)(da)興(xing)殿(dian)(dian)等數十(shi)(shi)(shi)(shi)(shi)座殿(dian)(dian)臺樓閣組成,是(shi)皇帝(di)起居(ju)、聽(ting)政的(de)場所。東(dong)部(bu)(bu)為(wei)東(dong)宮,專供太子居(ju)住和辦(ban)理政務。西部(bu)(bu)為(wei)掖庭(ting)(ting)宮,是(shi)安置宮女學習技藝的(de)地方。李吉甫稱(cheng):“(東(dong)京(jing))宮室臺殿(dian)(dian),皆宇文愷所創也。愷巧(qiao)思(si)絕倫(lun),因此制造頗(po)窮奢麗,前代都邑莫(mo)之比(bi)焉。”其(qi)中(zhong)以(yi)(yi)乾(qian)陽殿(dian)(dian)最為(wei)奢華,是(shi)皇帝(di)舉行大(da)(da)(da)典和接待(dai)重(zhong)要外國使團(tuan)的(de)地方。“殿(dian)(dian)基高九尺(chi)(chi),從(cong)地至(zhi)(zhi)鴟尾(房脊(ji)兩端的(de)獸)高一(yi)(yi)百(bai)七(qi)十(shi)(shi)(shi)(shi)(shi)尺(chi)(chi),十(shi)(shi)(shi)(shi)(shi)三(san)間二(er)十(shi)(shi)(shi)(shi)(shi)九架(jia),三(san)陛軒(xuan)(xuan)。文掍鏤檻,欒櫨百(bai)重(zhong),楶拱(gong)千(qian)構,云楣繡柱,華榱璧珰(dang),窮軒(xuan)(xuan)甍之壯麗。其(qi)柱大(da)(da)(da)二(er)十(shi)(shi)(shi)(shi)(shi)四(si)圍,倚井垂蓮,仰之者(zhe)眩曜。南(nan)(nan)(nan)軒(xuan)(xuan)垂以(yi)(yi)珠絲網絡,下不至(zhi)(zhi)地七(qi)尺(chi)(chi),以(yi)(yi)防飛鳥。四(si)面周以(yi)(yi)軒(xuan)(xuan)廊,坐宿衛兵(bing)。”“殿(dian)(dian)庭(ting)(ting)東(dong)南(nan)(nan)(nan)西南(nan)(nan)(nan)各有(you)(you)重(zhong)樓,一(yi)(yi)懸(xuan)鐘,一(yi)(yi)懸(xuan)鼓(gu),刻漏(lou)即(ji)在樓下,隨刻漏(lou)則鳴鐘鼓(gu)。”宮城(cheng)正(zheng)門(men)則天門(men),“門(men)上(shang)飛觀相夾,門(men)外即(ji)朝堂(tang)”。因其(qi)太奢,致武德(de)四(si)年(nian)(621年(nian))唐高祖李淵令(ling)人焚毀另建(jian)。
形如(ru)偃月(yue)(yue),謂(wei)之月(yue)(yue)陂
宮城西(xi)面(mian)是上(shang)林西(xi)苑,又(you)名會通苑,在(zai)今洛(luo)陽澗西(xi)一帶。據(ju)《大業雜記(ji)》記(ji)載(zai):“(大業)元年(nian)夏五月西(xi)苑,周二百(bai)里,其內造(zao)(zao)十(shi)六院,屈(qu)曲繞龍鱗溝。”苑內引(yin)澗河(he)匯(hui)水成海,周十(shi)余里,海中造(zao)(zao)蓬萊、方丈、瀛洲(zhou)三神山(shan),高出水面(mian)百(bai)余尺,臺觀殿閣布置在(zai)山(shan)上(shang),風景非常壯觀。緣渠作十(shi)六院,門皆臨渠,堂殿樓觀,極為華麗。為了(le)引(yin)洛(luo)水入苑,宇文愷(kai)(kai)還修筑了(le)月陂(po)。據(ju)李吉(ji)甫《元和郡縣(xian)(xian)圖志》卷(juan)五記(ji)載(zai):“洛(luo)水,在(zai)(洛(luo)陽)縣(xian)(xian)西(xi)南(nan)三里。西(xi)自苑內上(shang)陽之(zhi)南(nan)彌漫(man)東流,宇文愷(kai)(kai)筑斜堤束令東北流。當水沖,捺堰九折,形如(ru)偃(yan)月,謂之(zhi)月陂(po)。”
宮(gong)城(cheng)(cheng)的(de)(de)東北(bei)面(mian)為含嘉(jia)(jia)城(cheng)(cheng),城(cheng)(cheng)里為含嘉(jia)(jia)倉(cang)(cang),是一座貯(zhu)藏(zang)糧(liang)(liang)(liang)食的(de)(de)大(da)(da)型國家糧(liang)(liang)(liang)倉(cang)(cang)。據《大(da)(da)業(ye)雜記(ji)(ji)》記(ji)(ji)載(zai):“大(da)(da)業(ye)元(yuan)年(nian),煬帝建東都洛陽,在宮(gong)城(cheng)(cheng)東建含嘉(jia)(jia)倉(cang)(cang)。”據1969年(nian)以(yi)來的(de)(de)考(kao)古發掘(jue),含嘉(jia)(jia)城(cheng)(cheng)的(de)(de)總面(mian)積約(yue)43萬平方(fang)米,四面(mian)有城(cheng)(cheng)墻(qiang),城(cheng)(cheng)墻(qiang)為挖槽夯筑而(er)成。在倉(cang)(cang)城(cheng)(cheng)的(de)(de)東北(bei)和偏南(nan)地(di)區,勘探(tan)出(chu)大(da)(da)小不等的(de)(de)圓形或橢圓形的(de)(de)地(di)下(xia)糧(liang)(liang)(liang)窖287座,估計全城(cheng)(cheng)的(de)(de)地(di)下(xia)糧(liang)(liang)(liang)窖應在400座以(yi)上。由(you)于(yu)東京漕(cao)運方(fang)便(bian),又在含嘉(jia)(jia)城(cheng)(cheng)內儲藏(zang)了(le)(le)大(da)(da)量糧(liang)(liang)(liang)食,避免了(le)(le)大(da)(da)興城(cheng)(cheng)發生糧(liang)(liang)(liang)荒的(de)(de)問題,使其糧(liang)(liang)(liang)食供應得到了(le)(le)保障。
皇城(cheng)(cheng)(cheng)名太微(wei)城(cheng)(cheng)(cheng)(又稱子城(cheng)(cheng)(cheng)),亦稱南(nan)城(cheng)(cheng)(cheng)、寶城(cheng)(cheng)(cheng),在宮城(cheng)(cheng)(cheng)南(nan)面,由一(yi)(yi)(yi)條橫街(jie)與宮城(cheng)(cheng)(cheng)相(xiang)隔,“東西五(wu)(wu)里一(yi)(yi)(yi)十(shi)(shi)七步,南(nan)北(bei)(bei)(bei)三里二(er)百(bai)(bai)九十(shi)(shi)八(ba)(ba)步,周一(yi)(yi)(yi)十(shi)(shi)三里二(er)百(bai)(bai)五(wu)(wu)十(shi)(shi)步,高(gao)三丈(zhang)七尺。實測(ce)東西長(chang)與宮城(cheng)(cheng)(cheng)相(xiang)同,南(nan)北(bei)(bei)(bei)寬(kuan)為(wei)1843.6米。其城(cheng)(cheng)(cheng)曲折,以(yi)象南(nan)宮垣”。皇城(cheng)(cheng)(cheng)是(shi)軍(jun)政機構(gou)和宗(zong)廟的所在地。“城(cheng)(cheng)(cheng)中南(nan)北(bei)(bei)(bei)七街(jie),東西五(wu)(wu)街(jie)。左宗(zong)廟,右社稷(ji)。百(bai)(bai)僚廨署(shu)列于其間(jian),凡省六,寺(si)九,臺一(yi)(yi)(yi),監四,衛(wei)十(shi)(shi)有(you)八(ba)(ba)。東宮官屬(shu),凡府一(yi)(yi)(yi),坊三,寺(si)三,率府十(shi)(shi)”。
郭(guo)城(cheng)(cheng)稱羅郭(guo)城(cheng)(cheng)、羅城(cheng)(cheng)、京城(cheng)(cheng),隋時(shi)僅筑有短(duan)垣,一(yi)(yi)說(shuo):“東(dong)西(xi)一(yi)(yi)十(shi)(shi)八(ba)里一(yi)(yi)百(bai)一(yi)(yi)十(shi)(shi)五(wu)步(bu)(bu),南北(bei)一(yi)(yi)十(shi)(shi)五(wu)里一(yi)(yi)百(bai)七(qi)(qi)十(shi)(shi)五(wu)步(bu)(bu),周六十(shi)(shi)七(qi)(qi)里,其(qi)崇一(yi)(yi)丈八(ba)尺”,實(shi)測東(dong)西(xi)長(chang)9721 米(mi)(mi),南北(bei)寬(kuan)8651.7米(mi)(mi)。全城(cheng)(cheng)由(you)南北(bei)向大(da)街(jie)(jie)十(shi)(shi)一(yi)(yi)條,東(dong)西(xi)向大(da)街(jie)(jie)十(shi)(shi)四條,劃分(fen)(fen)(fen)為(wei)一(yi)(yi)百(bai)零八(ba)個(ge)里坊(fang)和(he)兩個(ge)商市(shi),形(xing)成(cheng)棋盤型(xing)的(de)(de)布(bu)局(ju)。白居易(yi)有詩云:“百(bai)千家似圍棋局(ju),十(shi)(shi)二(er)街(jie)(jie)如(ru)種菜(cai)畦。”既形(xing)象(xiang)又貼切(qie)地(di)描(miao)繪了(le)大(da)興城(cheng)(cheng)的(de)(de)布(bu)局(ju)特征。二(er)說(shuo):“東(dong)西(xi)五(wu)千六百(bai)十(shi)(shi)步(bu)(bu),南北(bei)五(wu)千四百(bai)七(qi)(qi)十(shi)(shi)步(bu)(bu)”,實(shi)測南北(bei)最長(chang)處(chu)(chu)7312米(mi)(mi),東(dong)西(xi)最寬(kuan)處(chu)(chu)7290米(mi)(mi)。全城(cheng)(cheng)縱橫大(da)街(jie)(jie)各(ge)十(shi)(shi)條,一(yi)(yi)般(ban)寬(kuan)41米(mi)(mi),把全城(cheng)(cheng)劃分(fen)(fen)(fen)為(wei)“里一(yi)(yi)百(bai)三(san),市(shi)三(san)”。這些里坊(fang)分(fen)(fen)(fen)布(bu)在北(bei)區(qu)的(de)(de)東(dong)部(bu)和(he)整個(ge)南區(qu),其(qi)中南區(qu)的(de)(de)里坊(fang)與街(jie)(jie)道最整齊。里坊(fang)平面(mian)作方形(xing)或(huo)長(chang)方形(xing),面(mian)積比大(da)興城(cheng)(cheng)的(de)(de)里坊(fang)略(lve)小,坊(fang)內(nei)辟(pi)十(shi)(shi)字形(xing)街(jie)(jie)道。由(you)于里坊(fang)小街(jie)(jie)道窄(zhai),臨街(jie)(jie)開門的(de)(de)住宅隨之增多,這樣(yang)就使城(cheng)(cheng)內(nei)各(ge)部(bu)分(fen)(fen)(fen)的(de)(de)關系(xi)顯得(de)比較緊湊。
城(cheng)(cheng)(cheng)中的(de)(de)(de)街(jie)道(dao)都很寬(kuan)(kuan)。通(tong)向城(cheng)(cheng)(cheng)門的(de)(de)(de)街(jie)道(dao)之(zhi)寬(kuan)(kuan)度都在百米(mi)以上(shang)(shang);最寬(kuan)(kuan)的(de)(de)(de)是界(jie)于宮城(cheng)(cheng)(cheng)和皇城(cheng)(cheng)(cheng)之(zhi)間的(de)(de)(de)橫街(jie),寬(kuan)(kuan)達220米(mi)以上(shang)(shang);位于南北(bei)中軸線上(shang)(shang)的(de)(de)(de)主干道(dao)朱(zhu)雀大街(jie)寬(kuan)(kuan)150 米(mi);不通(tong)城(cheng)(cheng)(cheng)門的(de)(de)(de)街(jie)道(dao)寬(kuan)(kuan)42—68米(mi);最窄的(de)(de)(de)是四周沿城(cheng)(cheng)(cheng)墻(qiang)內側的(de)(de)(de)順城(cheng)(cheng)(cheng)街(jie),寬(kuan)(kuan)25米(mi)。里坊(fang)(fang)都筑有(you)(you)坊(fang)(fang)墻(qiang),坊(fang)(fang)中也有(you)(you)街(jie)道(dao)。大的(de)(de)(de)里坊(fang)(fang)四面(mian)開四個坊(fang)(fang)門,中辟(pi)十(shi)字(zi)街(jie);小的(de)(de)(de)里坊(fang)(fang)開東西二門,有(you)(you)一(yi)條橫街(jie)。這些(xie)縱(zong)橫相交的(de)(de)(de)街(jie)道(dao)形(xing)成(cheng)一(yi)個交通(tong)網絡,井然(ran)有(you)(you)序。各大街(jie)的(de)(de)(de)兩側都開有(you)(you)排水溝,街(jie)道(dao)兩旁(pang)植以榆、槐(huai)為(wei)主的(de)(de)(de)行(xing)道(dao)樹(shu),株行(xing)距整齊(qi)劃一(yi),使道(dao)路成(cheng)為(wei)寬(kuan)(kuan)廣(guang)筆(bi)直的(de)(de)(de)林蔭大道(dao),為(wei)城(cheng)(cheng)(cheng)市增添(tian)了風采。
大興(xing)宮(gong)(gong)的(de)建造布(bu)局天(tian)(tian)(tian)人合一,從(cong)六坡(po)的(de)高度看(kan),地(di)勢從(cong)北(bei)到(dao)南(nan)漸次降低。那么(me)宮(gong)(gong)城所處的(de)位置則相(xiang)對較(jiao)低。不把宮(gong)(gong)城設置在最高處另有原委。根據天(tian)(tian)(tian)上星(xing)宿(su)的(de)位置,最為尊(zun)貴的(de)紫(zi)薇宮(gong)(gong)居于北(bei)天(tian)(tian)(tian)中央(yang),它以北(bei)極為中樞,東、西兩藩共有十五顆(ke)星(xing)環抱著(zhu)它。紫(zi)薇宮(gong)(gong)即(ji)皇宮(gong)(gong)的(de)意思,皇帝貴為天(tian)(tian)(tian)子,地(di)上的(de)君主和天(tian)(tian)(tian)上的(de)星(xing)宿(su)應該相(xiang)對應,應此,只能(neng)把皇宮(gong)(gong)布(bu)置在北(bei)邊中央(yang)位置。而且北(bei)有渭(wei)河(he)相(xiang)倚,從(cong)防(fang)衛角度看(kan),也具安全性(xing)。
但是(shi)這(zhe)種追求(qiu)理(li)念的(de)(de)(de)設(she)計似乎也有(you)缺陷。隋代的(de)(de)(de)皇宮(gong)——大(da)(da)興宮(gong)到(dao)唐(tang)朝繼(ji)續沿用,只是(shi)改名太(tai)極(ji)宮(gong)。而太(tai)極(ji)宮(gong)很(hen)快(kuai)就被大(da)(da)明宮(gong)所取代,究其原因,就是(shi)應為太(tai)極(ji)宮(gong)地(di)勢較(jiao)低(di),而長(chang)安城盛夏氣溫很(hen)高,使(shi)得住(zhu)在(zai)太(tai)極(ji)宮(gong)有(you)“湫濕(shi)感”。為此從秦至唐(tang),每逢夏季,統(tong)治者都要到(dao)夏宮(gong)去避暑。唐(tang)太(tai)宗選定長(chang)安城北禁(jin)苑(yuan)中(zhong)龍首高地(di),營造(zao)大(da)(da)明宮(gong),為太(tai)上(shang)皇消夏的(de)(de)(de)夏宮(gong)。后(hou)(hou)來唐(tang)高宗李治又接著以為完成(cheng)的(de)(de)(de)大(da)(da)明宮(gong)為基(ji)礎,進行大(da)(da)規模(mo)的(de)(de)(de)再建工程。大(da)(da)明宮(gong)的(de)(de)(de)正殿(dian)含元殿(dian)建成(cheng)后(hou)(hou),唐(tang)高宗便正式在(zai)大(da)(da)明宮(gong)聽政。此后(hou)(hou)二百余年(nian),大(da)(da)明宮(gong)都是(shi)唐(tang)代主(zhu)要的(de)(de)(de)朝會之所,成(cheng)為唐(tang)王朝的(de)(de)(de)統(tong)治中(zhong)心和國家象(xiang)征。
宇文(wen)(wen)愷(kai)的(de)(de)(de)一生,主(zhu)要是(shi)(shi)擔任(ren)營(ying)造方面的(de)(de)(de)高(gao)級官員,主(zhu)持過(guo)許(xu)(xu)多(duo)大(da)型(xing)的(de)(de)(de)建(jian)筑工(gong)(gong)程(cheng),起著相(xiang)(xiang)當于工(gong)(gong)程(cheng)總(zong)(zong)指(zhi)揮(hui)、總(zong)(zong)設計(ji)師(shi)和總(zong)(zong)工(gong)(gong)程(cheng)師(shi)的(de)(de)(de)作用。他(ta)(ta)在(zai)建(jian)筑方面取得了許(xu)(xu)多(duo)重大(da)的(de)(de)(de)成(cheng)就,有(you)些成(cheng)就甚至(zhi)具有(you)劃時代的(de)(de)(de)意義(yi)。但(dan)也(ye)應(ying)該(gai)指(zhi)出的(de)(de)(de)是(shi)(shi),在(zai)他(ta)(ta)設計(ji)和主(zhu)持的(de)(de)(de)工(gong)(gong)程(cheng)中(zhong),除了開鑿廣通渠,客觀上有(you)利于國計(ji)民生外,其(qi)余大(da)多(duo)是(shi)(shi)為(wei)了滿足統治者(zhe)(zhe)的(de)(de)(de)統治需(xu)要,尤其(qi)是(shi)(shi)宮殿建(jian)筑,不顧勞民傷財,取悅帝(di)王(wang)。如營(ying)造仁(ren)壽宮時,“役(yi)使嚴(yan)急,丁(ding)夫多(duo)死(si)(si),疲頓顛仆(pu),推填坑坎,覆以(yi)土石(shi),因(yin)而筑為(wei)平地。死(si)(si)者(zhe)(zhe)以(yi)萬數(shu)”,“時天暑(shu),役(yi)夫死(si)(si)者(zhe)(zhe)相(xiang)(xiang)次(ci)于道,楊素悉焚除之”。營(ying)建(jian)東(dong)(dong)京(jing)(jing)時,他(ta)(ta)“揣帝(di)心在(zai)宏侈(chi),于是(shi)(shi)東(dong)(dong)京(jing)(jing)制(zhi)度窮(qiong)極(ji)壯麗(li)”。“東(dong)(dong)京(jing)(jing)官吏督役(yi)嚴(yan)急,役(yi)丁(ding)死(si)(si)者(zhe)(zhe)什四五(wu),所(suo)司以(yi)車載死(si)(si)丁(ding),東(dong)(dong)至(zhi)城皋(今河(he)南(nan)滎(ying)陽),北至(zhi)河(he)陽(今河(he)南(nan)孟縣南(nan)),相(xiang)(xiang)望于道”。長(chang)城之役(yi),“死(si)(si)者(zhe)(zhe)十五(wu)六”。建(jian)仁(ren)壽宮和東(dong)(dong)京(jing)(jing)的(de)(de)(de)工(gong)(gong)程(cheng),宇文(wen)(wen)愷(kai)雖掛(gua)的(de)(de)(de)是(shi)(shi)副職(zhi),但(dan)他(ta)(ta)是(shi)(shi)實際的(de)(de)(de)負責者(zhe)(zhe),因(yin)此功過(guo)與他(ta)(ta)都(dou)有(you)直接的(de)(de)(de)關(guan)系。