主要建筑
正陽門城樓
門(men)(men)城樓(lou)(lou)(lou)(lou)坐落在磚(zhuan)(zhuan)砌城臺上,城臺上窄下寬,有(you)明(ming)顯(xian)的收分(fen),寬95米(mi)(mi),厚31.45米(mi)(mi),高(gao)14.7米(mi)(mi),城臺南北(bei)上沿(yan)各(ge)有(you)1.2米(mi)(mi)高(gao)的宇墻(qiang),占地3047平方米(mi)(mi),城臺上以(yi)(yi)城磚(zhuan)(zhuan)海(hai)墁。城樓(lou)(lou)(lou)(lou)為(wei)(wei)灰筒瓦(wa)綠琉璃(li)剪(jian)邊(bian)重檐歇山三(san)(san)滴(di)水樓(lou)(lou)(lou)(lou)閣式建筑(zhu),樓(lou)(lou)(lou)(lou)脊飾龍頭獸(shou)吻,每面(mian)(mian)(mian)有(you)檐柱、老(lao)檐柱和金柱三(san)(san)層(ceng)柱子,朱紅梁(liang)柱,金花(hua)彩繪(hui),樓(lou)(lou)(lou)(lou)上樓(lou)(lou)(lou)(lou)下四(si)面(mian)(mian)(mian)均(jun)設(she)門(men)(men),面(mian)(mian)(mian)闊七間,進深三(san)(san)間,上下設(she)回廊,上層(ceng)前后(hou)裝菱(ling)花(hua)格隔扇門(men)(men)窗,下層(ceng)為(wei)(wei)朱紅磚(zhuan)(zhuan)墻(qiang),明(ming)間及兩側正(zheng)面(mian)(mian)(mian)各(ge)有(you)實榻大門(men)(men)一座。城樓(lou)(lou)(lou)(lou)兩端沿(yan)城墻(qiang)內側設(she)斜坡馬道(dao)以(yi)(yi)通(tong)上下。通(tong)面(mian)(mian)(mian)寬41米(mi)(mi),通(tong)進深21米(mi)(mi),樓(lou)(lou)(lou)(lou)身寬36.7米(mi)(mi),深16.5米(mi)(mi),高(gao)27.3米(mi)(mi),整個(ge)城樓(lou)(lou)(lou)(lou)通(tong)高(gao)43.65米(mi)(mi),為(wei)(wei)老(lao)北(bei)京所有(you)城門(men)(men)樓(lou)(lou)(lou)(lou)中(zhong)最(zui)高(gao)者。城樓(lou)(lou)(lou)(lou)外側重檐以(yi)(yi)上懸掛木(mu)質(zhi)大門(men)(men)匾。城門(men)(men)洞為(wei)(wei)拱券(quan)式,開在城臺正(zheng)中(zhong),五伏五券(quan),內券(quan)高(gao)9.49米(mi)(mi),寬7.08米(mi)(mi),外券(quan)高(gao)6.29米(mi)(mi),寬6米(mi)(mi)。
箭樓
正(zheng)陽(yang)門的(de)箭(jian)樓(lou)是最(zui)(zui)能體現古代軍(jun)事防御(yu)思想和技術水平的(de)建筑(zhu),為(wei)一(yi)磚(zhuan)砌(qi)堡壘(lei)式(shi)(shi)建筑(zhu),雄(xiong)踞于磚(zhuan)砌(qi)城(cheng)臺之上。城(cheng)臺高約(yue)12米(mi)(mi),上窄下寬(kuan)(kuan),亦(yi)有明(ming)顯收分。城(cheng)臺正(zheng)中(zhong)辟券門,與城(cheng)門相(xiang)對,五(wu)伏五(wu)券,門洞內設"千(qian)斤閘",南側(ce)寬(kuan)(kuan)10米(mi)(mi),北(bei)側(ce)寬(kuan)(kuan)12.4米(mi)(mi),占地面積2147平方米(mi)(mi)。箭(jian)樓(lou)上下四層,樓(lou)頂為(wei)灰筒(tong)綠(lv)琉(liu)(liu)璃剪邊重(zhong)檐歇山式(shi)(shi),飾綠(lv)琉(liu)(liu)璃脊獸。南、東、西三面辟箭(jian)窗,以(yi)作對外防御(yu)(射擊)之用,南面四層,每(mei)層13孔(kong),東、西各四層,每(mei)層4孔(kong),連抱(bao)廈(sha)(sha)2孔(kong),共辟86孔(kong)。箭(jian)樓(lou)的(de)結構為(wei)前樓(lou)后廈(sha)(sha),面闊七間,寬(kuan)(kuan)62米(mi)(mi),進(jin)深20米(mi)(mi);北(bei)出抱(bao)廈(sha)(sha)廡座,面闊五(wu)間,寬(kuan)(kuan)42米(mi)(mi),進(jin)深12米(mi)(mi),整(zheng)座樓(lou)通高35.37米(mi)(mi)。在明(ming)清北(bei)京城(cheng)垣(yuan)的(de)箭(jian)樓(lou)中(zhong),唯正(zheng)陽(yang)門箭(jian)樓(lou)辟門,亦(yi)最(zui)(zui)為(wei)高大雄(xiong)偉。形式(shi)(shi)比較獨特(te),一(yi)直被(bei)看成是老(lao)北(bei)京的(de)象征。
甕城
箭(jian)樓(lou)與(yu)城(cheng)(cheng)(cheng)(cheng)門(men)樓(lou)之間為(wei)(wei)(wei)甕(weng)城(cheng)(cheng)(cheng)(cheng),甕(weng)城(cheng)(cheng)(cheng)(cheng)為(wei)(wei)(wei)長方形,南(nan)北長108米(mi),東(dong)西寬88.65米(mi),東(dong)北、西北兩內(nei)角(jiao)為(wei)(wei)(wei)直角(jiao),東(dong)南(nan)、西南(nan)兩外角(jiao)為(wei)(wei)(wei)抹角(jiao),甕(weng)城(cheng)(cheng)(cheng)(cheng)將城(cheng)(cheng)(cheng)(cheng)垣、城(cheng)(cheng)(cheng)(cheng)門(men)樓(lou)、箭(jian)樓(lou)和(he)兩座閘樓(lou)連接起(qi)來。甕(weng)城(cheng)(cheng)(cheng)(cheng)城(cheng)(cheng)(cheng)(cheng)垣與(yu)城(cheng)(cheng)(cheng)(cheng)墻高(gao)(gao)(gao)度(du)相(xiang)同(tong)(高(gao)(gao)(gao)約11.36米(mi)),略(lve)窄些,內(nei)為(wei)(wei)(wei)土(tu)墻心外甃大城(cheng)(cheng)(cheng)(cheng)磚。上(shang)頂甬道海墁城(cheng)(cheng)(cheng)(cheng)磚,外側(ce)筑雉堞,內(nei)側(ce)筑女(nv)兒墻,內(nei)有空場(chang)。甕(weng)城(cheng)(cheng)(cheng)(cheng)四面(mian)各開辟(pi)拱券式門(men)洞一(yi)座,東(dong)、西、南(nan)為(wei)(wei)(wei)吊落式閘門(men)。北門(men)在(zai)(zai)宏偉的城(cheng)(cheng)(cheng)(cheng)樓(lou)之下(xia)(xia),南(nan)門(men)在(zai)(zai)高(gao)(gao)(gao)大的箭(jian)樓(lou)之下(xia)(xia),東(dong)西門(men)則在(zai)(zai)甕(weng)城(cheng)(cheng)(cheng)(cheng)東(dong)西正中的閘樓(lou)之下(xia)(xia)。
甕城(cheng)(cheng)(cheng)內,城(cheng)(cheng)(cheng)樓南側(ce)靠(kao)北(bei)門(men)(men)兩(liang)(liang)側(ce),建有關(guan)(guan)帝(di)廟、觀(guan)音(yin)(yin)廟各一(yi)座,關(guan)(guan)帝(di)廟居(ju)西,觀(guan)音(yin)(yin)廟居(ju)東,均為南向,一(yi)層殿宇、兩(liang)(liang)側(ce)廡廊,規模較小。但兩(liang)(liang)廟的(de)香(xiang)火(huo)很旺(wang)。明清時(shi),北(bei)京內城(cheng)(cheng)(cheng)的(de)九座城(cheng)(cheng)(cheng)門(men)(men)甕城(cheng)(cheng)(cheng)內,全部依(yi)例建有廟宇,除德勝門(men)(men)和安定門(men)(men)供(gong)奉(feng)真武(wu)大(da)帝(di)外(wai),余均供(gong)奉(feng)關(guan)(guan)帝(di),以(yi)祈(qi)護國佑民。然(ran)而(er)九門(men)(men)之(zhi)中,以(yi)正陽門(men)(men)關(guan)(guan)帝(di)廟規模最大(da),傳說其中關(guan)(guan)羽的(de)塑像原系明朝內廷(ting)所供(gong)奉(feng),因此香(xiang)火(huo)一(yi)直(zhi)興盛。明清時(shi)期(qi)正陽門(men)(men)關(guan)(guan)帝(di)、觀(guan)音(yin)(yin)兩(liang)(liang)廟,曾留下了許多(duo)奉(feng)祀(si)、紀事(shi)的(de)碑刻、詩(shi)文,是研究北(bei)京城(cheng)(cheng)(cheng)垣建設史和社會(hui)文化史珍貴的(de)石刻文獻。
甕城(cheng)東西(xi)兩側建(jian)有閘樓(lou),閘樓(lou)面闊三間,灰筒(tong)瓦綠琉璃瓦剪邊,歇山(shan)小式屋頂,外側辟箭窗(chuang)兩排共12孔,下設閘門以通行人(ren)。
雉堞和女兒墻
雉(zhi)(zhi)堞(die)和女兒墻(qiang)(qiang)是沿城(cheng)垣(yuan)上(shang)頂內(nei)外(wai)修筑的(de)矮垣(yuan)墻(qiang)(qiang)。雉(zhi)(zhi)堞(die)位(wei)于城(cheng)垣(yuan)頂外(wai)側(ce),筑為(wei)齒狀,起(qi)盾牌作(zuo)用(yong),以保護守城(cheng)者免(mian)遭(zao)敵人攻擊。女兒墻(qiang)(qiang)亦(yi)稱女墻(qiang)(qiang),為(wei)城(cheng)垣(yuan)頂內(nei)側(ce)修筑的(de)矮垣(yuan)墻(qiang)(qiang),作(zuo)用(yong)是攔擋守城(cheng)者,免(mian)于摔(shuai)下。老北京內(nei)城(cheng)雉(zhi)(zhi)堞(die)高(gao)(gao)為(wei)1.9米(mi)(mi),寬為(wei)1.5米(mi)(mi),厚(hou)(hou)為(wei)0.75米(mi)(mi),其間距(ju)在0.5~0.8米(mi)(mi)之(zhi)間。外(wai)墻(qiang)(qiang)雉(zhi)(zhi)堞(die)高(gao)(gao)1.3米(mi)(mi),寬約1.2米(mi)(mi),厚(hou)(hou)為(wei)0.5米(mi)(mi)左右,其間距(ju)在0.5米(mi)(mi)左右,內(nei)外(wai)城(cheng)共有雉(zhi)(zhi)堞(die)20772個。雉(zhi)(zhi)堞(die)都是用(yong)白(bai)灰漿、大城(cheng)磚(zhuan)砌成。平頂,四側(ce)四棱見角,非常牢固(gu)。女兒墻(qiang)(qiang)高(gao)(gao)約1.2米(mi)(mi),厚(hou)(hou)約0.75米(mi)(mi),以白(bai)灰漿、大城(cheng)磚(zhuan)沿城(cheng)垣(yuan)形制砌成,上(shang)頂一般砌成饅頭頂或是泥鰍背頂。正陽門與(yu)內(nei)城(cheng)其它八門一樣(yang),城(cheng)臺外(wai)側(ce)建雉(zhi)(zhi)堞(die),內(nei)側(ce)建女墻(qiang)(qiang),規制亦(yi)與(yu)城(cheng)垣(yuan)相(xiang)同。
馬道
馬道是供守城(cheng)部(bu)隊上下城(cheng)用(yong)的專用(yong)斜道,它附貼在城(cheng)墻(qiang)(qiang)內側(ce)墻(qiang)(qiang)體上,坡度(du)約十五(wu)度(du)到三(san)十度(du)之(zhi)間,馬道寬(kuan)約四(si)、五(wu)米,斜道外側(ce)砌(qi)筑一(yi)道矮(ai)墻(qiang)(qiang)。
內城共有二十七(qi)對(dui)馬(ma)(ma)道(dao)(dao),每對(dui)馬(ma)(ma)道(dao)(dao)呈內八字形或外八字形,從左右兩條馬(ma)(ma)道(dao)(dao)都可以(yi)到(dao)達城頂。正陽(yang)門設有馬(ma)(ma)道(dao)(dao)兩條,均在月城內緊貼城垣(yuan)內壁(bi)而筑(zhu),分(fen)別通(tong)向城樓(lou)與箭(jian)樓(lou)(今已(yi)廢)。建(jian)筑(zhu)方法是將馬(ma)(ma)道(dao)(dao)土(tu)心與城垣(yuan)土(tu)心夯為一(yi)整體,另一(yi)側以(yi)白(bai)灰漿、大城磚(zhuan)(zhuan)(zhuan)(zhuan)砌(qi)(qi)成一(yi)米厚的磚(zhuan)(zhuan)(zhuan)(zhuan)層(ceng),成為馬(ma)(ma)道(dao)(dao)的外包皮磚(zhuan)(zhuan)(zhuan)(zhuan)層(ceng)。在這(zhe)層(ceng)外包皮磚(zhuan)(zhuan)(zhuan)(zhuan)上(shang),與馬(ma)(ma)道(dao)(dao)斜面平行砌(qi)(qi)起一(yi)道(dao)(dao)矮墻,其長與馬(ma)(ma)道(dao)(dao)斜面同,寬約0.75米、高(gao)約1.2米,稱為馬(ma)(ma)道(dao)(dao)扶手(shou)墻。馬(ma)(ma)道(dao)(dao)土(tu)心部(bu)分(fen)是以(yi)黃(huang)土(tu)夯成,其上(shang)再(zai)夯筑(zhu)一(yi)層(ceng)約50厘米的三合土(tu),再(zai)上(shang)以(yi)大城磚(zhuan)(zhuan)(zhuan)(zhuan)立砌(qi)(qi)一(yi)層(ceng),成"礓碴"式(shi)馬(ma)(ma)道(dao)(dao)路面。
鋪舍
鋪(pu)舍是城(cheng)(cheng)(cheng)(cheng)垣頂上(shang)(shang)駐軍值班房(fang),供守城(cheng)(cheng)(cheng)(cheng)兵士休(xiu)息(xi)或堆(dui)放(fang)守城(cheng)(cheng)(cheng)(cheng)武器等物之用。明(ming)(ming)代稱(cheng)為(wei)鋪(pu)舍房(fang),清代稱(cheng)堆(dui)撥房(fang)。基本上(shang)(shang)是每座(zuo)"馬面(mian)"之后的(de)城(cheng)(cheng)(cheng)(cheng)垣頂上(shang)(shang)即(ji)筑有(you)(you)一所(suo),面(mian)闊三(san)間,進深一間,為(wei)硬山式。陳宗藩(fan)《燕(yan)都(dou)叢考》中記述:內城(cheng)(cheng)(cheng)(cheng)垣上(shang)(shang)有(you)(you)"旗(qi)炮房(fang)九(jiu)所(suo)",分布在九(jiu)座(zuo)城(cheng)(cheng)(cheng)(cheng)門樓(lou)旁,"堆(dui)撥房(fang)一百三(san)十五所(suo),儲火藥房(fang)九(jiu)十六所(suo)";外城(cheng)(cheng)(cheng)(cheng)垣上(shang)(shang)有(you)(you)"堆(dui)撥房(fang)四十三(san)所(suo)"。所(suo)記雖為(wei)清代末年的(de)情況,數字上(shang)(shang)也可(ke)能有(you)(you)所(suo)出入,但可(ke)表明(ming)(ming)其(qi)存在和作用,因(yin)為(wei)清代對于(yu)城(cheng)(cheng)(cheng)(cheng)垣設施是沿循明(ming)(ming)制的(de)。②正陽門城(cheng)(cheng)(cheng)(cheng)樓(lou)、箭樓(lou)、甕城(cheng)(cheng)(cheng)(cheng)及(ji)其(qi)附屬建(jian)筑正陽橋、雉堞、登(deng)城(cheng)(cheng)(cheng)(cheng)馬道(dao)、鋪(pu)舍等這(zhe)一組城(cheng)(cheng)(cheng)(cheng)市防(fang)御工事建(jian)筑群(qun),布局合理,造(zao)型莊嚴(yan),氣勢凝重,顯(xian)示(shi)了(le)中華民族建(jian)筑藝(yi)術(shu)的(de)獨特風格(ge)。
作用價值
在北(bei)(bei)京(jing)(jing)城(cheng)(cheng)諸門中,正(zheng)陽門規(gui)制(zhi)最為(wei)隆崇,是中國(guo)封建(jian)社(she)會后期城(cheng)(cheng)市布局、軍(jun)事防(fang)御、禮(li)儀制(zhi)度和建(jian)筑藝(yi)術的(de)形象體現,也是老北(bei)(bei)京(jing)(jing)歷(li)(li)史(shi)(shi)文(wen)(wen)化(hua)的(de)重(zhong)要載體。正(zheng)陽門作為(wei)北(bei)(bei)京(jing)(jing)僅(jin)(jin)有(you)的(de)一座城(cheng)(cheng)樓(lou)、箭樓(lou)保存(cun)(cun)完(wan)好的(de)封建(jian)帝都(dou)之門,既(ji)是歷(li)(li)史(shi)(shi)文(wen)(wen)化(hua)遺存(cun)(cun),也是北(bei)(bei)京(jing)(jing)古都(dou)特色的(de)絕佳載體,人文(wen)(wen)蘊涵深厚。正(zheng)陽門作為(wei)不可再生的(de)文(wen)(wen)物資源(yuan),以其無聲(sheng)的(de)建(jian)筑語言,不僅(jin)(jin)向世人展示出封建(jian)社(she)會都(dou)邑城(cheng)(cheng)垣中的(de)一個局部,而(er)且(qie),在古代建(jian)筑、文(wen)(wen)化(hua)藝(yi)術、民俗禮(li)儀、王朝歷(li)(li)史(shi)(shi)等方面,都(dou)有(you)其獨(du)立的(de)存(cun)(cun)在意義與研(yan)究(jiu)價值,是北(bei)(bei)京(jing)(jing)歷(li)(li)史(shi)(shi)文(wen)(wen)化(hua)名城(cheng)(cheng)的(de)重(zhong)要組成部分、老北(bei)(bei)京(jing)(jing)城(cheng)(cheng)的(de)標志性建(jian)筑。