大跨連續(xù)剛構(gòu)橋設計與計算分析

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中圖分類號：U448 文獻標志碼：A 文章編號：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、適用、環(huán)保、經(jīng)濟和美觀"為技術方針，充分吸收國內(nèi)外的建橋新理論、新材料、新工藝、新技術和先進經(jīng)驗，并結(jié)合地質(zhì)、地形、地貌的特征，選擇適合的橋梁方案尤為重要。（剩余4475字）