網wang架jia結jie構gou一yi般ban都dou支zhi承cheng在zai柱zhu頂ding或huo圈quan梁liang等deng下xia部bu支zhi承cheng結jie構gou上shang，支zhi座zuo節jie點dian即ji指zhi位wei於yu支zhi承cheng結jie構gou上shang的de網wang架jia節jie點dian。它ta既ji要yao連lian接jie在zai網wang架jia支zhi承cheng處chu彙hui交jiao的de杆gan件jian，又you要yao支zhi承cheng整zheng個ge網wang架jia，並bing將jiang作zuo用yong在zai網wang架jia上shang的de荷he載zai傳chuan遞di到dao下xia部bu支zhi承cheng結jie構gou。因yin此ci，支zhi座zuo節jie點dian是shi網wang架jia結jie構gou與yu下xia部bu支zhi承cheng結jie構gou聯lian係xi的de紐niu帶dai
，也ye是shi整zheng個ge結jie構gou中zhong的de一yi個ge重zhong要yao部bu位wei。一yi個ge合he理li的de支zhi座zuo節jie點dian必bi須xu是shi受shou力li明ming確que、傳力簡捷
、安全可靠
，同時還應做到構造簡單合理
，製作簡單方便，具有較好的經濟性。

   wangjiajiegoudezhizuojiedianyingnengbaozhenganquankekaodichuandizhichengfanli，yincibixujuyouzugoudeqiangduhegangdu。zaishuxianghezaizuoyongxia
，zhichengjiedianyibanjunweishouya，danzaiyixiexiefangleidewangjiazhong
，jubuzhizuojiediankenengchengshoulalizuoyong
，youshihaikenengyaochengshoushuipinglidezuoyong
，shejishiyingshizhizuojiediandegouzaoshiyingtamendeshoulitedian。tongshizhizuojiediandegouzaohaiyingjinliangfuhejisuanjiading
，chongfenfanyingshejiyitu。youyuwangjiajiegoushigaocichaojingdingdeganjiantixi，zhizuojiediandeyueshutiaojianduiwangjiadejiedianweiyiheganjianneiliyingxiangjiaoda；yueshutiaojianzaigouzaoheshejijiandechayijiangzhijiedaozhiganjianneilihezhizuofanlidegaibian，youshihaihuizaochengganjianneilibianhao。yinciduiwangjiajiegouzhizuojiediandeshejiyinggeiyuzugoudezhongshi。