橋(qiao)梁(liang)板(ban)式橡膠(jiao)支(zhi)座是由多層薄鋼板(ban)與多層橡膠(jiao)片硫化粘合而成一種(zhong)(zhong)普通橡膠(jiao)支(zhi)座產品(pin),這種(zhong)(zhong)產品(pin)具有(you)足夠的(de)(de)豎向剛度,能夠將支(zhi)座上部構造的(de)(de)反力可(ke)靠的(de)(de)傳遞給墩臺,支(zhi)座具有(you)良好的(de)(de)彈性(xing),以應對橋(qiao)梁(liang)的(de)(de)梁(liang)端的(de)(de)轉動;又有(you)較大的(de)(de)剪切變形(xing)能力,以滿(man)足上部構造的(de)(de)水平位移。
橋(qiao)梁板式橡膠支座適用于公路橋(qiao)梁、鐵(tie)路橋(qiao)梁、城市立交(jiao)橋(qiao)。主(zhu)要功(gong)能(neng)是將(jiang)上部的反力可靠地傳(chuan)遞給墩(dun)臺,并同(tong)時能(neng)完成梁體(ti)結構由于制動力溫度、混凝士(shi)的收縮徐變及荷載(zai)作(zuo)用等(deng)引(yin)起的水平位移(yi)及梁端(duan)的轉動。
由多層高彈(dan)性(xing)(xing)(xing)的(de)(de)橡膠為主體材料,與薄鋼板鑲嵌、粘合(he)、硫化而(er)成。該(gai)產品有(you)足夠(gou)的(de)(de)豎向剛(gang)度以承受(shou)垂直荷載,且(qie)能(neng)將上部構(gou)造的(de)(de)壓(ya)力可靠地傳遞(di)給(gei)墩迨臺(tai);有(you)良好的(de)(de)彈(dan)性(xing)(xing)(xing)以適應梁端的(de)(de)轉(zhuan)動;有(you)較大(da)的(de)(de)剪(jian)切(qie)變形以滿足上部構(gou)造的(de)(de)水平位移。橡膠以其獨(du)特(te)的(de)(de)功能(neng)從根本(ben)上改善(shan)了橋梁支座的(de)(de)性(xing)(xing)(xing)能(neng)。
橋梁橡膠支座的正確安裝步驟:
先使支(zhi)座(zuo)(zuo)和(he)支(zhi)承墊(dian)石按設計要(yao)求準確就位(wei)。架梁(liang)(liang)(liang)(liang)(liang)落梁(liang)(liang)(liang)(liang)(liang)時(shi),T型(xing)(xing)梁(liang)(liang)(liang)(liang)(liang)的(de)縱軸線(xian)(xian)(xian)(xian)要(yao)與支(zhi)座(zuo)(zuo)中(zhong)心線(xian)(xian)(xian)(xian)重合(he);板(ban)(ban)(ban)梁(liang)(liang)(liang)(liang)(liang)、箱梁(liang)(liang)(liang)(liang)(liang)的(de)縱軸線(xian)(xian)(xian)(xian)與支(zhi)座(zuo)(zuo)中(zhong)心線(xian)(xian)(xian)(xian)相平行。為(wei)落梁(liang)(liang)(liang)(liang)(liang)準確,在(zai)架
跨板(ban)(ban)(ban)梁(liang)(liang)(liang)(liang)(liang)或箱梁(liang)(liang)(liang)(liang)(liang)時(shi),可在(zai)梁(liang)(liang)(liang)(liang)(liang)底劃好二個支(zhi)座(zuo)(zuo)的(de)十(shi)字位(wei)置中(zhong)心,在(zai)梁(liang)(liang)(liang)(liang)(liang)的(de)端立(li)面上標出兩個支(zhi)座(zuo)(zuo)的(de)位(wei)置中(zhong)心線(xian)(xian)(xian)(xian)的(de)鉛直線(xian)(xian)(xian)(xian),落梁(liang)(liang)(liang)(liang)(liang)時(shi)使之與墩臺上的(de)位(wei)置中(zhong)心線(xian)(xian)(xian)(xian)相重合(he)。以后數跨可依照
跨梁(liang)(liang)(liang)(liang)(liang)為(wei)基準進行。在(zai)架梁(liang)(liang)(liang)(liang)(liang)落梁(liang)(liang)(liang)(liang)(liang)時(shi)要(yao)平穩,防止壓偏(pian)或產生(sheng)初始(shi)剪切(qie)變形,大家可以參考鐵(tie)路(lu)橋梁(liang)(liang)(liang)(liang)(liang)板(ban)(ban)(ban)式橡膠(jiao)支(zhi)座(zuo)(zuo)規格(ge)表(biao) 。在(zai)安(an)裝T型(xing)(xing)橋梁(liang)(liang)(liang)(liang)(liang)時(shi),若橡膠(jiao)支(zhi)座(zuo)(zuo)比(bi)梁(liang)(liang)(liang)(liang)(liang)筋(jin)(jin)底寬,則應在(zai)支(zhi)座(zuo)(zuo)與梁(liang)(liang)(liang)(liang)(liang)筋(jin)(jin)底之間加設比(bi)支(zhi)座(zuo)(zuo)大的(de)鋼筋(jin)(jin)混凝土墊(dian)塊或厚鋼板(ban)(ban)(ban)做過渡層,以免支(zhi)座(zuo)(zuo)局 部受壓,而形成應力集中(zhong)。