斜拉索安装技术方案(新)

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1、目录一、编制依据··································································································1二、工程概况··································································································1三、斜拉索挂索施工工艺································································

2、············2四、斜拉索PE修补工艺．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．9五、斜拉索张拉施工工艺············································································10六、质量保证措施························································································11七、工期保证措施····························

3、····························································13八、安全保证措施························································································13九、附件········································································································15十、附图·············

4、···························································································15中铁大桥局天兴洲长江大桥工程指挥部2#、3#墩斜拉索安装技术方案斜拉索安装技术方案一、编制依据1、《武汉天兴洲公铁两用长江大桥正桥——钢梁施工图》（共三册）；2、《武汉天兴洲公铁两用长江大桥正桥——斜拉桥斜拉索总装配图》3、《铁路桥涵施工规范》TB10203-2002；4、《铁路桥涵工程施工质量验收标准》TB10415-2003；5、《客运专线铁路桥涵工程施工质量验收暂行标准》铁建设[

5、2005]160号；6、《铁路工程施工安全技术规程》TB10401.1－2-2003（上下册）；7、《建筑机械使用安全技术规程》JGJ33-2001；二、工程概况1、天兴洲大桥正桥为（98+196+504+196+98）米双塔三索面斜拉桥，上层为六车道公路，下层为四线铁路。斜拉桥主梁为板桁结合钢桁梁，上弦中部756米范围是正交异性钢板桥面，两端各168米范围是混凝土结合板桥面。桥塔为倒“Y”型混凝土塔，塔顶标高为+205m，承台以上塔高188.5m。2、全桥共设16对192根斜拉索，采用三索面空间索布置，斜拉索采用PES7-241、PES7-253、PES7-283、

6、PES7-337、PES7-379、PES-409、PES-421、PES-451等八种规格三十二种型号。整股钢丝用高强缠包带缠紧后外挤双层双螺旋线HDPE护套，钢丝的抗拉标准强度Rby=1670MPa，最长索272.183m，最短索82.938m，单根索最大重量41.184t（钢丝重），两端均采用张拉冷铸锚具。张拉端设在塔内，同一号斜拉索要求上、中、下游、主、边跨六根索同时对称张拉。3、工艺适用范围本工艺的适用范围为天兴洲大桥2#墩（汉口侧）、3＃墩（武昌侧）斜拉索（边跨边桁S1～S16、边跨中桁MS1～MS16、中跨边桁C1～C16、中跨中桁MC1～MC16号）的

7、挂设及张拉。详见附图TQ－07－01：天兴洲大桥斜拉索布置图中铁大桥（郑州）缆索有限公司第1页中铁大桥局天兴洲长江大桥工程指挥部2#、3#墩斜拉索安装技术方案三、斜拉索挂索施工工艺（一）、施工方案天兴洲大桥2#、3#墩塔柱封顶后进行斜拉索安装。根据施工现场塔顶吊架、塔旁塔吊的配置分为两种方式进行安装：A、1—6#斜拉索先挂塔端（1—4#斜拉索戴平锚杯螺母，5—6#斜拉索锚杯张拉杆副螺母锁紧），再通过20吨放索盘桥面展索，安装梁端并软牵引到位，最后5—6#斜拉索塔端刚性牵引到位（斜拉索戴平锚杯螺母）。B、7—16#斜拉索先根据桥面成型长度进行桥面展索，