人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
6期
16-19
,共4页
梁式渡槽%断面形式%小箱梁%南水北调中线工程
樑式渡槽%斷麵形式%小箱樑%南水北調中線工程
량식도조%단면형식%소상량%남수북조중선공정
beam aqueduct%section form%small box girder%Middle Route Project of South-to-North Water Diversion
针对南水北调中线一期工程北排河排洪渡槽设计流量大、荷载大、施工技术要求高等特点，通过对渡槽上、下部结构形式的受力特性、施工难度、工期等研究比选，确定了渡槽上部结构采用预应力混凝土简支梁方案，并且按单线单槽布置；在考虑了渡槽工程区地形地质条件后，渡槽下部墩身采用桩柱式桥墩，桩基础按嵌岩柱进行设计。经对北排河排洪渡槽3种基本工况进行分析计算，证明其结果满足规范要求。
針對南水北調中線一期工程北排河排洪渡槽設計流量大、荷載大、施工技術要求高等特點，通過對渡槽上、下部結構形式的受力特性、施工難度、工期等研究比選，確定瞭渡槽上部結構採用預應力混凝土簡支樑方案，併且按單線單槽佈置；在攷慮瞭渡槽工程區地形地質條件後，渡槽下部墩身採用樁柱式橋墩，樁基礎按嵌巖柱進行設計。經對北排河排洪渡槽3種基本工況進行分析計算，證明其結果滿足規範要求。
침대남수북조중선일기공정북배하배홍도조설계류량대、하재대、시공기술요구고등특점，통과대도조상、하부결구형식적수력특성、시공난도、공기등연구비선，학정료도조상부결구채용예응력혼응토간지량방안，병차안단선단조포치；재고필료도조공정구지형지질조건후，도조하부돈신채용장주식교돈，장기출안감암주진행설계。경대북배하배홍도조3충기본공황진행분석계산，증명기결과만족규범요구。
According to the characteristics of flood discharge aqueduct of Beipai River of Middle Route Project of South-to-North Water Diversion, including large design discharge, high grade of loads and strict requirements for construction, we have studied the loading features of the upper and lower parts of the aqueduct, and compared the construction difficulty and schedule, the pre-stressed concrete simple supported beam scheme is adopted for the upper structure, which is a single trough in a single line. With consideration of the geological conditions of the engineering area, columnar pier was selected as lower pier of the aque-duct, and rock-socketed pile is designed as the foundation of the pier. Through analysis and calculation aiming at 3 basic cases of the aqueduct, the results meet the requirements and specifications.
