關于(yu)新橋梁(liang)彈(dan)(dan)(dan)性(xing)(xing)縫正確(que)定(ding)位(wei) 當施(shi)工(gong)單位(wei)在吊(diao)起彈(dan)(dan)(dan)性(xing)(xing)縫按規劃位(wei)置正確(que)對(dui)中，其(qi)縱向中心線同橋縫中心線重。彈(dan)(dan)(dan)性(xing)(xing)縫標高及(ji)縱橫坡(po)定(ding)位(wei)施(shi)工(gong)時用定(ding)制的長(chang)1.2m的定(ding)位(wei)角(jiao)鋼，每間隔2m固定(ding)于(yu)彈(dan)(dan)(dan)性(xing)(xing)縫頂(ding)面(mian)(mian)。定(ding)位(wei)角(jiao)鋼兩端用螺栓(shuan)頂(ding)貼瀝(li)青(qing)路面(mian)(mian)，經過(guo)螺栓(shuan)進退來調理彈(dan)(dan)(dan)性(xing)(xing)縫的標高，變形縫風琴式密封(feng)(feng)膠條(tiao)，用3米直尺測定(ding)，彈(dan)(dan)(dan)性(xing)(xing)縫頂(ding)面(mian)(mian)與(yu)兩側瀝(li)青(qing)路面(mian)(mian)在同一(yi)個平(ping)面(mian)(mian)內，并滿意縱、橫坡(po)與(yu)路面(mian)(mian)相吻合。用泡沫塑料板將梁(liang)端及(ji)彈(dan)(dan)(dan)性(xing)(xing)縫空隙處填實(shi)，槽口兩邊沿(yan)處用模板封(feng)(feng)堵。

護欄橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)伸(shen)縮(suo)縫是(shi)使(shi)(shi)用橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)伸(shen)縮(suo)體高低凹槽之(zhi)間的剪切(qie)變(bian)形來適應梁體布(bu)局的位移，公(gong)路風(feng)(feng)琴式(shi)(shi)密(mi)封(feng)膠(jiao)(jiao)(jiao)(jiao)條，是(shi)以也(ye)稱為剪切(qie)式(shi)(shi)橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)板(ban)(ban)式(shi)(shi)伸(shen)縮(suo)縫.板(ban)(ban)內(nei)埋設承重鋼板(ban)(ban)超越梁端空隙，蒙受車輛荷載(zai).橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)板(ban)(ban)雙(shuang)側預埋兩(liang)塊錨(mao)固鋼板(ban)(ban)，并(bing)設有預留(liu)螺(luo)栓孔，經由(you)進程螺(luo)栓與梁端連成(cheng)全(quan)體.板(ban)(ban)式(shi)(shi)橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)板(ban)(ban)式(shi)(shi)伸(shen)縮(suo)縫是(shi)一種剛柔聯合的安(an)裝，具有一定的豎向剛度(du)，超越空隙的才(cai)能大（變(bian)形規模可達30至300mm），聯接鞏固靠得住，行(xing)車安(an)穩溫馨，風(feng)(feng)琴式(shi)(shi)密(mi)封(feng)膠(jiao)(jiao)(jiao)(jiao)條，并(bing)具有杰出的吸(xi)振.聯合各地的實際情況，我國(guo)已分(fen)娩(mian)出各類形式(shi)(shi)的板(ban)(ban)式(shi)(shi)橡(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)伸(shen)縮(suo)安(an)裝，并(bing)投放到(dao)國(guo)內(nei)橋梁工程中使(shi)(shi)用。

風琴式護欄伸縮(suo)縫是氯丁橡膠制作而成(cheng)，安裝于橋面，能夠(gou)承受車輛重(zhong)復荷載的作用，構造簡單，耐老(lao)化(hua)，耐橈性(xing)能，逆風防(fang)水(shui)作用

其次開鑿寬度≥600mm、深250mm～350mm的(de)槽口(kou)待原來的(de)混(hun)凝土臺面主鋼筋(jin)外漏，不得有損壞(huai)損傷，禁止切斷及時(shi)清理槽口(kou)和(he)梁(liang)板(ban)橋臺之間的(de)異(yi)物按照設(she)(she)計圖紙在(zai)槽口(kou)設(she)(she)置φ16門形(xing)預埋鋼筋(jin)與槽底梁(liang)板(ban)主鋼筋(jin)焊接密實安裝(zhuang)新橋梁(liang)伸縮縫按照氣溫計算調(diao)整(zheng)定位間隙