箱梁预制先张法与后张法经济比较

Economic comparison between pre and post tensioning methods of box girder prefabrication

目前我国道路交通特别是高速客运专线飞速发展,桥梁工程大幅增加,箱梁用量也随之大增,其对建设成本的影响不容小视。为合理选择箱梁的施工工艺,运用投资成本分析法对箱梁先张法和后张法造价的影响因素和经济技术指标进行研究。

At present road traffic especially high speed passenger dedicated lines are rapidly developed in our country. Bridge works are increased by a big margin with box girders augmented also greatly, of which the influence on the construction cost cannot be overlooked whatsoever. To reasonably select the construction technology of box girders, a research is conducted by making use of the investment cost analysis method in the influencing factors and techno - economic indexes of the pre - tensioning and post - tensioning methods of box girders.