橋梁支座是連接橋梁上部結構和下部結構的重要結構部件
，位於橋梁和墊石之間，它能將橋梁上部結構承受的荷載和變形（位移和轉角）可靠地傳遞給橋梁下部結構
，是橋梁的重要傳力裝置。有固定支座和活動支座兩種。

橋qiao梁liang支zhi座zuo作zuo為wei橋qiao梁liang的de重zhong要yao組zu成cheng部bu分fen
，在zai橋qiao梁liang的de整zheng體ti中zhong起qi著zhe非fei常chang重zhong要yao的de作zuo用yong，它ta使shi橋qiao梁liang構gou成cheng一yi個ge整zheng體ti

，橋qiao梁liang支zhi座zuo也ye是shi橋qiao跨kua結jie構gou的de重zhong要yao支zhi撐cheng部bu分fen，它ta是shi連lian接jie橋qiao梁liang上shang部bu結jie構gou和he下xia部bu結jie構gou的de重zhong要yao部bu件jian。它ta能neng夠gou將jiang橋qiao跨kua結jie構gou的de支zhi撐cheng反fan力li傳chuan給gei橋qiao墩dun，並bing且qie它ta還hai需xu要yao能neng夠gou保bao證zheng橋qiao跨kua結jie構gou在zai荷he載zai和he溫wen度du變bian化hua的de作zuo用yong下xia具ju有you設she計ji時shi所suo要yao求qiu的de一yi些xie靜jing力li條tiao件jian
，從cong而er能neng夠gou適shi應ying梁liang體ti轉zhuan動dong和he自zi由you伸shen縮suo的de需xu要yao。並bing且qie還hai應ying該gai具ju備bei便bian於yu安an裝zhuang、weixiuheyanghudezuoyong

，zhizuohaibixunenggoubaozhengzaiduntaishangdeweizhichongfendeguding
，bunenghualuo。qiaoliangzhizuodehaohuaizhijieyingxiangzheqiaoliangdezhenggejiegou

，yinciduiqiaoliangzhizuodeyanjiushifeichangzhongyaode。