主跨138m预应力混凝土连续梁桥的施工控制

本文以广州市金沙洲大桥主桥大跨度预应力混凝土连续梁桥为背景 ,介绍大跨度混凝土连续梁桥施工控制的目的、内容、方法和措施等 ,并根据现场测试的结果来验证本文所使用的控制方法的正确性和合理性     

东江大桥主航道桥方案设计

东江大桥是广州市广园快速路延长线上跨越东江主、副航道的一座特大桥。主航道桥投标设计方案为16 0m +80m独塔单索面斜拉桥 ,比选方案为 5 5m +85m +85m +5 5m预应力砼连续梁桥。斜拉桥方案主跨加劲梁为钢箱梁 ,边跨为预应力混凝土箱梁。主要介绍东江大桥斜拉桥方案桥型总体设计 ,包括自然条件、结构设计、结构计算及施工要点。     

蕉门河中心区双桥项目车行桥设计

蕉门河中心区双桥项目车行桥为外倾式非对称拱桥,主跨为175.5m,主、副拱分别绕旋转轴向面外旋转16°、18°而成,主跨及主拱均采用钢箱梁结构。主要介绍该拱桥的结构设计。     

空间组合拱桥有限元分析

简单介绍了中山一桥的特点 ,并建立了空间杆系和空间板壳有限元模型 ,对其静力、动力、稳定性能进行了详细分析 ,为设计提供了有力的理论依据     

广州市解放大桥设计

本文介绍了广州解放大桥桥型选择、结构设计要点和三跨连续下承式无风撑钢管砼系杆拱桥施工加载顺序及其主要阶段的稳定分析等情况。     

Design，Calculation and Model Test of Zhongshan Bridge

Zhongshan Bridge is a kind of steel arch bridge with a particular space-combined structure．The rationality of design．accuracy of theoretical calculation and reliability of transportation were studied．Its design，FEM calculation of stresses and strains，and model test were introduced in detail．The theoretical analysis and model test verified that the design was reliable and safe．The simulated stresses，rigidity and stability，which are based on the selected loading system and cross-section geometry，satisfy the related design standards．Some of the issues that need to be considered in the real bridge construction were also discussed．     

The Design and Analysis of Long-Span and Low-Depth Prestressed Composite Steel-Concrete Beam Bridge

The design scheme of long-span and low-depth composite steel-conerete beams is introduced,and the methods of avoiding the cracking of concrete deck in the negative moment regions are proposed.Moreover,significant exploration for problems of the composite beams has been made,such as optimizing construction steps to regulate the stress,applying jacking technique to exert prestress on the concrete deck,investigating the uplifting force principle of the shear connectors by means of model test and non-linear finite element analysis,and pointing out the countermeasure to reduce tension force of the shear connectors.     

东江特大桥主航道桥方案设计

东江特大桥主航道桥投标方案设计为 1 60 m+80 m独塔单索面斜拉桥。主跨加劲梁为钢箱梁 ,边跨加劲梁为预应力混凝土箱梁。该桥结构设计合理 ,造型轻巧美观 ,在节省材料、缩短工期方面具有优越性。本文主要介绍东江特大桥桥型总体设计 ,包括自然条件、结构设计、结构计算及施工要点     

大跨度异形结合梁设计与分析计算

广州内环线东山口立交中心一路西标段设计采用三跨预应力钢－混凝土结合梁结构，跨度布置（５０＋７０＋６０）ｍ，高跨度比为１／３２。简要介绍了该大跨度异形结合梁设计思路及分析计算方法，从中探讨了防止结合梁负弯矩区混凝土桥面板开裂的方法。     

佛陈大桥设计与施工

介绍了佛陈大桥桥型选择、大桥结构设计、以及该桥主跨112．8m下承式“哑铃形”钢管混凝土系杆拱桥施工及监测等情况。