海榆西线芙蓉田至崖城段工程改建工程桥梁二改造工程施工技术交底中国公路工程咨询集团海榆西线海口至三亚段公路改建工程〔芙蓉田至崖城〕工程理一、桥梁改造工程工程概况·················3二、编制根据·······················7三、桥梁工程施工技术···················81、钢筋·························82、模板、支架······················163、混凝土及钢筋混凝土工程················244、施工测量·······················445、明挖扩大根底·····················456、钻孔灌注桩根底····················467、墩台施工·······················528、空心板的预制·····················549、后张法预应力T梁···················5610、梁板安装······················6511、就地现浇钢筋混凝土拱桥施工·············6612、桥面系施工·····················7013、桥梁加固施工〔碳纤维加固、粘贴刚板〕········71一、桥梁改造工程工程概况1、地理位置概况本工程所处路段为海榆西线海口至三亚段公路改建工程第二合同段〔设计施工总承包工程〕起点K181+000.758接合同段段终点位于白沙海榆西线老路K181公里距芙蓉田约2公里;终点K380+822.766,位于三亚崖城镇海榆西线老路K381+000处。2、技术本工程采用双向二车道二级公路一般路段设计速度为60km/h,路基宽12m;部分受限路段〔K184+000~K193+500〕为40km/h路基宽度10.5m.。3、道路起讫点、中间控制点及工程规模1.A1标段起点K181+000.758接合同段段终点位于白沙海榆西线老路K181公里处距芙蓉田约2公里;终点K241+180位于东方大田镇。道路呈南北走向起于芙蓉田农场跨越珠碧江、昌化江等河流经过白沙、昌江、东方共3个。2.A2标段起点K241+180接第A1标段终点位于东方大田镇;终点K310+840位于乐东尖锋镇。道路呈南北走向起于大田镇经过东方、乐东共2个控制点为大田镇、八所镇、新龙镇、尖峰镇等城镇路段及溪圯河、感城河等河流。3.A3标段起点K310+840接第A2标段终点位于乐东尖峰镇;终点K380+822.766位于三亚崖城镇。道路呈南北走向起于尖峰镇经过乐东、三亚共2个控制点为尖峰镇、罗镇、黄流镇等城镇路段及南港河、宁远河等河流。4、桥梁改造方案1.完全撤除重建桥梁共计25座:K188+490.2中栏山桥、GK1+363大溪桥、K192+165都乙桥、K199+315.8南班二桥、K204+558利茅桥、K215+777太空桥、K226+704.6都芭桥、K237+271.2居便一桥、K238+145居便二桥、K240+615老同桥、K262+986.7那益桥、K270+802.77溪圯小桥、K276+875.77罗俄桥、K278+496.27邦沟桥、K279+839.57南北沟桥、K280+607.81塘沟桥、K285+424.38感城小桥、K282+557.96板桥小桥、K301+490.91槟榔桥、K309+754.46白沙小桥、K315+788.39新安二桥、K316+314.29新安一桥、K319+418.53公路塘桥、K343+5.28搭车桥、K371+597.58波浪桥;2.上部构造撤除重建下部构造保存利用桥梁共计5座:K184+173可兴桥、K225+385水利桥、K234+427抱板三桥、K239+200.7居便三桥、K323+784.73三曲沟桥;3.加固改造桥梁共计4座:K203+831.5利下桥、K232+422.9抱板一桥、K233+345.4抱板二桥、K327+746.34黄流桥;4.维修整治桥梁共计26座:K218+509.6叉河铁路一桥、K220+695叉河一桥、K223+124叉河二桥、K224+476叉河大桥、K225+022跨线桥、K259+942.3罗带河大桥、K261+451.3典浪桥、K283+979.58扶上小桥、K291+757.56板桥桥、K296+922.16南港一桥、K299+8.01南港二桥、K304+575.81北边沟桥、K306+713.61岭头沟桥、K310+274.96白沙二桥、K311+370.44白沙大桥、K311+856.白沙铁路跨线桥、K388+993.43望楼中桥、K342+205.13黎沟桥、K344+493.87九所桥、K346+781.1深塘中桥、K349+717.9中灶小桥、K351+508.95中灶大桥、K357+430.79角头二桥、K360+532.73石沟坑桥、K368+59...