Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 2

年份

2013 1

2008 1

关键词

三峡升船机 1

安全监测 1

横梁支撑系统 1

贝雷架 1

检索范围：

排序：展示方式：

三峡升船机横梁支撑系统安全监测及分析

刘新清,何炜

《中国工程科学》 2013年第15卷第9期页码 108-112

摘要：

本文从监测对象的选择、监测项目的确定、监测点的布置以及监测结果的评价等方面详细介绍了三峡升船机横梁支撑系统的安全监测情况。监测项目包括：贝雷架支撑系统在混凝土浇筑前后以及混凝土浇筑过程中的应力、应变和位移监测；相应的塔柱混凝土墙体结构变形监测；横梁排架的立杆垂直度和位移监测。通过监测结果与原型荷载试验中获取的基础数据的比较分析表明：在施工过程中，横梁混凝土支撑体系安全可靠，应力、应变和位移等监测指标均满足设计要求，能够保证横梁混凝土的顺利浇筑。同时，本工程在安全监测方面建立的方案与技术体系可为其他同类工程的安全监测提供参考和借鉴。

关键词：三峡升船机安全监测横梁支撑系统贝雷架

HTML PDF 收藏

Design and stability analysis of continuous skew tied-arch bridge over Bin Jiang River

YU Jiancheng, TONG Hao, HUANG Wei

《结构与土木工程前沿（英文）》 2008年第2卷第1期页码 37-42 doi: 10.1007/s11709-008-0004-z

摘要： A tied arch bridge without wind bracing was built over the Bin Jiang River, with oblique angle of 20°. Its main design details are described and mechanical performances are analyzed. The stability analytical types are also introduced and the first elastic stability theory is used. A space finite element model has been built to analyze the stability performances in both construction and operation stages for single span or continuous, orthogonal or oblique bridge. The influence of stiffness of the end crossbeam is also analyzed. The result shows that out-plane buckling occur for a rigid tie and similar no matter whether it is single span or continuous and orthogonal or oblique. When there are more and stronger inner crossbeams, the influence of the end crossbeams on arch stability becomes unremarkable.

关键词： out-plane buckling unremarkable crossbeam stability analytical orthogonal