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苏溪大桥施工组织设计 [复制链接]

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苏溪大桥实施性施工组织设计›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

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一、编制依据及原则›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
1.›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
编制依据›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑴福厦铁路工程招投标文件;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑵工程项目的施工图纸;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑶《客运专线铁路桥涵工程施工质量验收暂行标准》、《铁路混凝土工程施工质量验收补充标准》(铁建设[2005]160号);›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑷我单位对施工现场和周围环境的实地勘察、调查所掌握的情况;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑸本工程要求的质量标准、工期及我单位的创优规划;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑹我单位的实际施工水平、施工能力及机械设备。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
2.›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
编制原则›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑴科学安排施工、突出重点,兼顾一般,安排好控制工程的工期,确保工程总工期的实现;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑵严格按照施工规范和设计要求精心施工,确保工程质量;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑶确保工程施工和防洪渡汛的安全;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑷优化施工组织方案,确保工、料、机的合理配置;›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑸合理布置施工现场,确保少占山林和耕地,保护水源。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑹尽量减少施工对当地群众正常生活生产的影响,文明施工,保护环境。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
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二、工程概况›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⒈工程概况›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

苏溪大桥位于渔溪镇柳厝村、下里村。起讫里程为D1K68+910.26~D1K69+120.1,全桥长209.88米,直线桥。大桥的中心里程为D1K69+015.00;本桥环境水对砼无侵蚀性。本桥基础除0#台按摩擦桩设计外,其余墩台均按柱桩设计,桩身需嵌入基岩弱风化带(W2)不少于2m且不少于设计桩长。本桥上部结构为6×32有碴轨道后张法预应力后张简支箱梁。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

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›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⒊水文及工程地质›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑴气象特征›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
本桥所在地区属亚热带海洋季风气候,温和湿润,雨量充沛,四季不甚分明,冬无严寒,夏季酷热。年平均气温约20℃,一月平均气温为16.1℃,七月平均气温为28.5℃,七月至九月气温最高,最高气温38℃~39.4℃;一月至二月气温最低,最低气温-2℃~-3℃,偶有霜冻。多年平均降雨量1093.7~1432.0mm,雨量多集中在3~9月。10月至次年2月少雨,天高气爽。7~9月为台风暴雨期,全年大于25 mm的降雨 日为12.3天~15.8天。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑵水文情况›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
苏溪大桥下为苏溪,水流不大。沿线是渔塘、低地。沿线水质经普查资料分析,对混凝土无腐蚀。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑶工程地质›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
线路地处东南沿海,地貌单元主要为低山丘陵地貌、滨海平原台地地貌及冲积平原地貌。本桥地层岩性覆盖层第四系土层,主要地层依次为粉质粘土,卵石土,全风化、强风化、弱风化花岗岩。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⑷地震度参数›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
本桥所处地震动峰值加速度为0.1g,地震动反应谱特征周期0.45S。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
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4.工程特点、难点及相应对策›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

(1)工程特点›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

①本桥处于苏溪及鱼塘范围内,需要涉及改沟,鱼塘及河流处需围堰、抽水,填筑便道等,施工干扰比较大。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx

›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
②该地区属于亚热带海洋季风气候,温和湿润,雨量充沛,雨量多集中在3~9月, 7~9月为台风暴雨期,全年大于25 mm的降雨 日为12.3天~15.8天,给施工带来了很多影响。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
(2)工程重点、难点›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
①本桥有桩基60根,位于河流及鱼塘中,地质情况复杂。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
②墩台身及承台砼体积大。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
(3)相应对策›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
①根据桥位地质情况,钻孔桩采用冲击循环钻机钻孔,以加快施工进度。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
②大体积墩台身砼施工浇筑时,采用降低水化热的措施,加强温控,避免出现大体积砼温度裂纹。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
③0#台、1#墩、6#台施工时,先采用草袋围堰,然后筑岛填土分层压实。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
三、总体施工部署›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
⒈总体施工进度安排›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
桥梁工程由一个桥梁专业施工队担负施工,施工队就近租住砖厂厂房,为生活、生产区。主要负责苏溪大桥下部结构施工。计划 2006年7月12日开工, 2007年1月27日前完工,施工计划工期为6.5个月。桥梁工期计划见桥梁工期要求。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
1)桩基:200671220061110›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
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3.临时工程建设›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
A. 便道便桥:根据现场调查,从324国道K67+500处下里小学对面有一村庄道路可以进入苏溪大桥桥址,经过一旧砖厂,穿过鱼塘埂大约150m,即可进入1#墩位置。鱼塘埂需要拓宽处理,计划利用旧砖厂费旧砖垫路,加宽至4.5m,并压实处理,以方便今后车辆机械进出。0#桥台位于1#墩对面的鱼塘埂位置,有一条约20m宽的河沟隔开,钻孔机械可从324过道进入柳厝村,穿过村庄和稻田可到达0#台位置,但考虑到施工人员的方便,在河沟上用木头搭设一简易便桥,方便施工。6#台在5#墩所在位置鱼塘埂对面的鱼塘埂上,相隔一条约30m长的河沟,钻孔机械可以从6#台位置附近的乡村便道进入,为了方便施工,在河沟上搭设一简易便桥。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
B. 变压器:桥址附近电源充沛, 在桥址中央增加一台315KW的变压器,以满足钻孔桩、输送泵等大功率机械设备的正常使用。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
C. 用水方案:桥址附近水源丰富,可利用河沟的水进行施工用水,生活用水可以从附近村庄解决。›æ"ÿ‚)å÷bbs.3c3t.comé[3Ï#X°Íx
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回复:苏溪大桥施工组织设计

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回复:苏溪大桥施工组织设计

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