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Ⅰ、大型预应力混凝土构件拼装的大跨连续梁桥上部构造一、概述容奇大桥是广珠公路改建工程中四座大桥之一,是改渡为桥中之最大者。设计方案的选定是按照广东省交通厅所提两年完成,技术先进的设计要求和根据广东省珠江三角洲河网地区的特点及施工部门所具有的大型浮吊和打桩船等设备优势拟定的。主桥上部构造采用最大吊重控制为500吨的大型预制块件组拼的箱形预应力混凝土连续梁;下部构造为钢护筒钻孔灌注桩基础。这种大型预
Ⅰ. Construction of Large Span Continuous Beam Bridge Constructed with Large Prestressed Concrete Components I. General Description Rongqi Bridge is one of four bridges in the reconstruction project of Guangzhou-Zhuhai Expressway, and is the largest of the bridges in the transition. The design scheme is selected according to the Guangdong Provincial Communications Department two years to complete, the design of advanced technology requirements and based on the Pearl River Delta in Guangdong Province River network characteristics and the construction sector has a large floatation and piling equipment and other equipment developed . The upper part of the main bridge is constructed with a box-shaped prestressed concrete continuous beam assembled by a large prefabricated block with a maximum hoisting control of 500 tons. The lower part is constructed as a steel tube bored pile foundation. This large pre-