In terms of the characters of a multiple arch bridge with 5 spans,the research on schemes of integral lift technique,enhancing technique standard,widening and reform are carried out based on practical engineerings.
结合实际工程,对5跨连拱桥梁整体提升与提高技术标准、加宽改造方案进行了研究,通过有限元模拟施工过程计算和理论分析,说明整个项目的实施,从技术上讲是可行的。
Based on finite element theory,the 3 dimensional dynamic evaluation model of long-span X-style steel box-section arch bridge was created with large-mass method(LMM) and fixed arch foot method.
基于有限元理论,应用大质量法(LMM)和拱脚固定法建立大跨度钢箱提篮连拱桥的空间动力计算模型。
The internal force influence line of equation section and catenary ream less arcade were cal- culated by computer program by Hardness Conversion Mode,which has particular application value to improving calculation efficiency and precision in arcade.
通过电算程序,采用换算刚度法,解算等截面悬链线无铰连拱的内力影响线,对提高连拱计算的效率和精度有一定的应用价值。
Borrowing the idea of ∑method which is one of the methods to make static analysis of arcade, static deformation curves of arch and pier are derived according to the reciprocal theorem of work and the (elastic) centre method.
借鉴连拱静力分析中的∑法,由功的互等定理和弹性中心法推导了拱和墩的静力变形曲线,接着以 2 孔连拱为例,推导了其自振基频的近似计算公式,并讨论了采用不同质量分布、不同抗推刚度对计算结果的影响。
As the highway bridge s foundations changing and changing, the arcadecalculation is important and important in recent years.
随着公路桥梁基础的转型化，连拱的计算就变得越来越重要，因此，快速准确的计算连拱的内力已成为桥梁界的一个较为重要的研究方向，本文以王国鼎教授提出的换算刚度法为基础，加上求解固定拱的理论，编制了简单体系悬链线等跨连拱的计算程序，该程序采用了QBASIC语言，用人机对话的方式输入数据，简单而又方便，程序的输出结果符合工程师的设计习惯，所有的计算结果都用相关的算例进行了考证，结果都是准确的。
For the problem in the construction of double multi-arch tunnel,the paper discussed the design of Changyanling multi-arch tunnel for reference.
针对公路双连拱隧道设计、施工中存在的问题,结合太原至长治高速公路长堰岭2号隧道的设计,提出了新型连拱隧道曲中墙、二次衬砌整体浇筑的结构形式,以优化连拱隧道的结构,较好地解决了连拱隧道的施工和防排水问题。
The paper discussed the numerical analysis of multi-arch tunnel cracks,and proposed some advice for the cracks cause.
结合省内外连拱隧道所产生的裂缝展开讨论,对连拱隧道的裂缝进行了数值分析,针对原因提出合理建议,同时谈了几点体会。
This paper gives an introduction to the selection of construction scheme for arch box, design of hoisting and fastening system, measures for laterally stabilizing arch rib and simulative analysis of structure of the bridge and describes the construction technique for hoisting and closing large-span and multi-arch rib on single base.
斜阳溪大桥是位于国道319线长涪高速公路的一座特大桥,主桥上部为净跨132m的四连拱。
In this thesis, based on the Liuzhou Jinglan Bridge s demolition project, demolition method and construction monitoring of a reinforced concrete multiple arch bri.
本文结合工程实例——柳州市静兰大桥的拆除工作,对钢筋混凝土连拱桥的拆除方法及施工控制开展了分析研究。