大体积混凝土通仓浇筑水平约束应力分析  

Horizontal Restraint Stress Analysis for Full Length Placement of Mass Concrete Blocks

作　　者：黄达海[1] 张宇鑫 徐卫超[1] 

机构地区：[1]三峡大学土木水利学院,湖北宜昌443002 [2]大连理工大学,辽宁大连116023

出　　处：《水电站设计》2003年第1期6-8,19,共4页Design of Hydroelectric Power Station

摘　　要：以混凝土拱坝的一个坝段为例,通过仿真分析方法,在同等条件下计算了不同浇筑块长度的温度过程与应力发展过程。从各块体中部最高温度、最大水平约束应力、断面平均水平约束应力、典型点应力发展过程、正反向应力变幅5个方面,比较系统地阐述了大体积混凝土通仓浇筑问题。分析结果在一定程度上支持了混凝土超长浇筑块施工。In this paper a concrete column block is used as a sample to study temperature and stress developing process when the block length varies from 20m,40m,60m,80m upto 120m by method of simulation analysis.Full length placement of large concrete block is systematically expounded from the max temperature,max horizontal stress,average section stress,stress development process of typical points and maxium variation range of horizontal stress in the middle section of each block.The analysis results support full length placement of extra long concrete blocks.

关 键 词：大体积混凝土 通仓浇筑 水平约束应力 仿真分析 

分 类 号：TV544[水利工程—水利水电工程]