鋼便橋架設施工前,備齊貝雷片、貝雷梁、螺栓等材料及相應的配套材料,完成施工材料進場檢驗驗收,杭州貝雷片出租(zu)廠家確保原材料滿足鋼便橋架設質量、安全要求。貝雷主梁在麻村商場前空曠場地內拼裝,下面墊枕木,用16t吊車將貝雷逐片吊起,用桁架銷子相互連接接長。鋪架貝雷梁時配備1臺25噸汽車吊作為主吊,1臺16t汽車吊作為副吊,貝雷片廠家配套用的專用工具1套,安裝工人12人。貝雷片廠家吊裝前先試吊并安排專職信號工指揮,在吊裝過程與交管部門溝通指揮疏解交通。
鋼(gang)便橋由17片(pian)縱(zong)(zong)(zong)梁(liang)(liang)組成(cheng),每片(pian)縱(zong)(zong)(zong)梁(liang)(liang)由21片(pian)3m貝(bei)雷梁(liang)(liang)組成(cheng),在施(shi)工(gong)現場(chang)將21m縱(zong)(zong)(zong)梁(liang)(liang)拼裝(zhuang)成(cheng)型,整(zheng)體吊入冠梁(liang)(liang)上(shang),縱(zong)(zong)(zong)梁(liang)(liang)與(yu)縱(zong)(zong)(zong)梁(liang)(liang)之間用90cm連接片(pian)固定(ding),縱(zong)(zong)(zong)梁(liang)(liang)基坑西側向東側延伸。當所有的(de)縱(zong)(zong)(zong)梁(liang)(liang)與(yu)連接片(pian)固定(ding)成(cheng)形達至橋面(mian)板(ban)(ban)(ban)寬度,進行現澆蓋板(ban)(ban)(ban)底模(mo)(mo)(3mm厚(hou)鋼(gang)板(ban)(ban)(ban))鋪(pu)設,底模(mo)(mo)鋪(pu)設需保證板(ban)(ban)(ban)面(mian)的(de)平整(zheng)度,板(ban)(ban)(ban)縫(feng)密(mi)貼,貝(bei)雷片(pian)廠(chang)家鋼(gang)筋(jin)蓋板(ban)(ban)(ban)鋼(gang)筋(jin)按照結構配筋(jin)計算要求施(shi)工(gong),鋼(gang)筋(jin)綁扎完(wan)成(cheng)之后即(ji)進行砼(tong)澆筑施(shi)工(gong),貝(bei)雷片(pian)廠(chang)家蓋板(ban)(ban)(ban)厚(hou)25cm,蓋板(ban)(ban)(ban)澆筑完(wan)成(cheng)后養護7天。
鋼(gang)便橋(qiao)蓋板與冠梁上部擋(dang)墻間距為2cm,防止鋼(gang)板熱脹冷縮破壞鋼(gang)筋混(hun)凝土(tu)擋(dang)墻,并(bing)用(yong)瀝青封堵,防止雨水下(xia)滲(shen)。由于一期開(kai)挖后(hou),場地罐(guan)車無法進(jin)入,混(hun)凝土(tu)采用(yong)汽車泵進(jin)行(xing)澆筑,振搗棒進(jin)行(xing)振搗。汽車泵設于圍(wei)擋(dang)大(da)門(men)前及(ji)圍(wei)擋(dang)內(nei)4m范圍(wei),大(da)門(men)外(wai)采取臨時圍(wei)擋(dang)。