大跨连续刚构桥设计与计算分析

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中图分类号：U448 文献标志码：A 文章编号：2095-2945（2025）24-0128-04

Abstract：Thebridgeopeninglayoutofthislocationisbasedontheroutedirection，terrain，geologicalconditions，andflood discharge requirements. The main bridge span layout is （82+3×150+82）m . Based on the design characteristics of the main beam structure，prestresedsystem，andpierstructureofthebridge，afiniteelementmodelofthebridgewasestablishedusing Midas/ Civilsoftware.Thebearingcapacity，crackresistance，andstfessofthebridgewereanalyzed，andthecalculationresults showedthattheyallmettherequirementsofthecurrentspecifications.Reasonabledesignwasadoptedtocontrolthewebplate cracksand the mid span deflection problem，withgood reliability and safety.

Keywords：large-spancontinuousrigidframebridge;cantileverpouring construction;webplate crack；mid-span deflection; bridge design

在跨越大型河流、山谷等工程中，以“安全、耐久、适用、环保、经济和美观"为技术方针，充分吸收国内外的建桥新理论、新材料、新工艺、新技术和先进经验，并结合地质、地形、地貌的特征，选择适合的桥梁方案尤为重要。（剩余4475字）