沙河涵洞式渡槽结构受力分析  

Analysis of Structure Force in Shahe River Culvert Aqueduct

作　　者：原思海[1] 李晓芬[2] 杨开云[3] 

机构地区：[1]焦作煤业集团有限责任公司,河南焦作454002 [2]中原工学院,河南郑州450007 [3]华北水利水电学院,河南郑州450011

出　　处：《人民黄河》2011年第10期103-104,107,共3页Yellow River

基　　金：南水北调工程建设重大关键技术研究及应用(JGZXJJ-10)

摘　　要：采用有限单元法对沙河涵洞式渡槽结构在运行过程中的受力情况进行了计算,分析时考虑了渡槽结构自重、水荷载、河道扬压力、风载、人行荷载、温度荷载等10种计算工况。结果表明:在各种单荷载因素中,对沉降量影响较大的因素是结构自重和渡槽内水荷载,正常运行时温变荷载基本不影响结构的沉降量;涵洞式渡槽结构的最大拉应力发生在渡槽内跨中断面的侧墙与底板交接处,方向为环向;最大压应力发生在涵洞两竖墙之间中部的渡槽底板上,方向为纵向;其他部位的拉、压应力值都比较小。Based on finite element method,the Shahe River culvert aqueduct structure force analysis in operational process was carried out.We considered ten combination operating conditions which include weight of aqueduct structure,water load,river uplift pressure,wind load,pedestrian load and temperature load.The results show that in all kinds of single load factors,weight of aqueduct structure and water load have a great influence on settlement,temperature load has basically no effect on settlement in normal operational process.Maximum tensile stress of culvert aqueduct structure is located in the junction of side wall and bass-plate in cross section of aqueduct,tensile stress is circumferential direction.The maximum compressive stress of culvert aqueduct structure is located in aqueduct base-plate of central of two vertical wall,compressive stress is longitudinal direction.Tensile and compressive stress values of other parts are smaller.

关 键 词：水工结构 受力分析 有限单元法 渡槽 温度应力 徐变 应力松弛 沙河 

分 类 号：TV672[水利工程—水利水电工程]