弯箱梁桥横梁计算方法的分析

平面曲线桥,由于弯扭耦合作用,横梁对于增强桥梁的结构整体性,加强主梁之间的横向联系,改善荷载横向分配等起到重要作用,因此应把横梁作为主要受力构件加以考虑。本文对计算方法进行了分析和探讨,认为用梁格法进行有限元建模值得推荐,并通过算例进行分析,提供一些参考。     

后张预应力连续箱梁结构的预应力施工技术

经过一系列的工程实践总结,通过改进传统的预应力筋张拉方法,如采用塑料波纹管减少张拉过程的摩阻损失;两端同时对称张拉和超张拉减少应力损失;改善搅拌工艺和灌浆配合比增加灌浆的密实性等,最终形成了一套完整的施工工法。     

后张法预应力箱梁施工实践与探索

分析了后张法预应力箱梁施工中存在的一些技术性、工艺性和安全性的问题，同时也揭示了我国现阶段建筑市场领域设计、施工、监理行业技术工作者的情况，以期对设计、施工、监理行业的技术工作者有点启示。     

Design of a shaking table test box for a subway station structure in soft soil

A reasonable choice of structure of a model box is significant for a shaking table test to be successful in geotechnical engineering. A model box has been designed for the shaking table test of a subway station structure in the soft soil of Shanghai in the paper. The reasonable geometric similarity scale of the subway station structure has been determined by a 3-D dynamic analysis under the action of lateral equivalent static loading. The shape, size and structure of the model box are chosen by considering all the involved factors comprehensively. The shape of the box is similar to that of a typical station structure, and the ratio between the plane dimension of the model ground and that of the model structure is big enough to reduce the influence of boundary condition effectively. The structure is strong enough to avoid being demolished by shaking during a test. The contact conditions between the model soil and box are clear to help the data gained from the test well fit that from numerical analysis. The total weight of the model soil and box is less than the bearing capacity of the shaking table apparatus and there is no resonance between the model soil and box. The results show that the model box can be used to simulate the dynamic response of a subway station structure very well, so it provides a firm foundation for the success of the shaking table test of a subway station structure. Translated from Chinese Journal of Geotechnical Engineering, 2004, 26(1): 75–78 [译自: 岩土工程学报]     

箱形网架结构简化计算方法及其计算用表

针对四点简支箱形网架的受力特点 ,推导出箱形网架结构的简化计算公式 ,并得出相应的计算用表。通过与空间桁架位移法计算结果的对比 ,证明所提出的方法是正确的     

城市钢箱梁结构立交桥的特点及安装技术

通过与混凝土结构立交桥相比较,阐述城市钢箱梁结构立交桥的特点,并着重介绍立交桥建设中的钢箱梁安装施工技术。     

高压旋喷注浆在某铁路中桥地基加固中的应用

结合高压旋喷注浆法在谢桥煤矿济河铁路中桥地基加固中的实际应用情况，就该工程的概况、地基加固设计、成桩质量等作了介绍，分析提出了该技术的优势。     

小高层给排水系统的设计体会

介绍了给排水专业易和其他专业发生冲突的几个方面 ,来说明设计时应注意地几个问题及解决办法。     

某现浇混凝土异形箱梁加固工程研究分析

结合工程实例，通过对现浇异形箱梁的病害状况的分析，提出三种病害处理方案，通过三种方案的对比分析、计算，得出合理、优化的现浇混凝土异形板加固处理方案，为其他类似工程项目提供了参考。     

大跨度钢管拱平转施工技术

以东平大桥钢管拱平转施工方案为例，介绍了转动体系的上下转盘、钢箱拱的施工方法，阐述了转体的施工流程及转体结构水平转动的具体操作步骤，该转体合拢结果显示满足了设计要求。