人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
6期
95-98
,共4页
王聪%尤岭%朱克兆%史召锋
王聰%尤嶺%硃剋兆%史召鋒
왕총%우령%주극조%사소봉
排水渡槽%下部结构改造%置换%截面增大%南水北调中线工程
排水渡槽%下部結構改造%置換%截麵增大%南水北調中線工程
배수도조%하부결구개조%치환%절면증대%남수북조중선공정
drainage aqueduct%restructuring of substructure%substitution%enlargement of section%Middle Route Project of South-to-North Water Diversion
在南水北调中线某跨渠排水渡槽施工中，由于柱墩阻水情况不满足设计要求，需对下部结构进行改造，以减少阻水影响。介绍了将该渡槽柱墩改造为板式墩的设计和施工方案，及下部结构的受力分析过程。改造中，在不中断已建渡槽使用的前提下，完成原有盖梁受力体系的转换和板墩置换，同时对盖梁进行了截面增大的改造。对类似工期紧张、空间受限的下部结构改造工程具有借鉴意义。
在南水北調中線某跨渠排水渡槽施工中，由于柱墩阻水情況不滿足設計要求，需對下部結構進行改造，以減少阻水影響。介紹瞭將該渡槽柱墩改造為闆式墩的設計和施工方案，及下部結構的受力分析過程。改造中，在不中斷已建渡槽使用的前提下，完成原有蓋樑受力體繫的轉換和闆墩置換，同時對蓋樑進行瞭截麵增大的改造。對類似工期緊張、空間受限的下部結構改造工程具有藉鑒意義。
재남수북조중선모과거배수도조시공중，유우주돈조수정황불만족설계요구，수대하부결구진행개조，이감소조수영향。개소료장해도조주돈개조위판식돈적설계화시공방안，급하부결구적수력분석과정。개조중，재불중단이건도조사용적전제하，완성원유개량수력체계적전환화판돈치환，동시대개량진행료절면증대적개조。대유사공기긴장、공간수한적하부결구개조공정구유차감의의。
Substructure of a drainage aqueduct crossing main canal of South-to-North Water Diversion Project was needed to be reconstructed due to excessive water-resistance effect, the restructuring design solution that substitutes plate-piers for col-umn-piers as well as the construction scheme are presented. In the construction, the plate-piers were substituted and the sec-tion of bent cap was enlarged, so the former force system was transferred while the aqueduct functioned well. The force analysis for the restructuring process is carried out, which provides valuable references for other substructure restructuring construction characterized as limited construction schedule and restrained construction clearance.
