燕山大桥课程设计.doc

燕山大桥课程设计摘要桥是跨越障碍的通道,随着我国城市建设和高等级公路、道路建设的发展, 桥梁的建设也将成为必然的趋势。预应力混凝土简支 T型梁桥设计在我国公路上修建很多。本设计采用预应力混凝土 T 型梁桥,跨径布置为( 12×30)m ,主梁为变截面T型梁。跨中梁高为 ,支点梁高为 。桥墩为重力式桥墩、桥台。本文主要阐述了该桥的设计和计算过程。首先对主桥进行总体结构设计,然后对上部结构进行内力、配筋计算,再进行强度、应力及变形验算,最后进行下部结构验算。具体包括以下几个部分: ,结构各部分尺寸拟定; ; ; ; ; ; ; ; ; 10. 下部结构验算。关键词 T型简支梁桥,预应力混凝土桥台,桥墩, ABSTRACT Bridge across obstacles corridors, with our urban construction and the high-grade highway, road construction, bridge building will also e the inevitable trend. Pre-stressed Concrete T bridge design teams in the construction of many ofour roads. The bridge belongs to the prestressed concreted structuer which isa simple supported beam span arrangement is( 12×30) superstructure is variable T shaped supported beam height of the girder on the support is ,and the height of the middle pier is gravity pier. The abutment is gravity abutment. This essay focuses on the design and calculation process of the , make an overall structure design of the main perform the calculation of the internal force and reinforcing bar on the ,check the intensity,stress and ,check the substructure.. The main points of the design are as the follows. 1 .The arrangement of the bridge types; 2 .The units partition of the structute; 3 .The calculation of the internal force of dead load; 4 .The calculation of the internal force of movable load; 5 .bination of every kind of load; 6 .The arrangement of prestressed reinforcing bar; 7 .The calculation of the prestressed loss; 8 .The check of the section intensity; 9 .The check of the section stress and deflection; 10 .The check the substructure. K ey words T shaped supported beam bridge , Prestressed conctete , pier , abutment 目录摘要..........................................................................................................................