張方 黃俊豪 金聰鶴 徐望喜 龔婉婷 錢永久
摘 要:綜合運用現代測試手段、試驗技術、評估理論、結構理論、數值仿真、數學統計預測等理論方法和技術手段,對既有橋梁在剩余服役期內的安全性和適應性給出評判,提出維護策略及加固方法,是橋梁工程的重要研究領域。基于該領域最新研究進展,對基于時變理論的既有橋梁可靠性評估方法、結合工程應用的可靠度計算方法、維修加固的策略、鋼筋混凝土墩柱的抗震性能及其抗震加固、橋梁加固的新材料、新方法和新裝備等研究進行了介紹和總結,并從對既有結構性能衰變的認識、發展新的理論與方法、根據實際需求拓展新的研究領域等方面對研究提出了展望。
關鍵詞:橋梁評估;橋梁維修;橋梁加固;時變可靠度;橋梁抗震;結構性能衰變
中圖分類號:U445.7 ? 文獻標志碼:R ? 文章編號:2096-6717(2020)05-0076-13
收稿日期:2020-04-07
基金項目:國家自然科學基金(51778532);河北省土木工程診斷、改造與抗災重點實驗室開放基金(2016)
作者簡介:張方(1974- ),男,博士,主要從事既有橋梁結構的評估、診斷與加固理論、橋梁文化遺產規劃和保護以及大跨度橋梁的施工監控和健康監測研究,E-mail:fangzhang@swjtu.edu.cn。
Received:2020-04-07
Foundation items:National Natural Science Foundation of China (No.51778532 ); Open Fund of Hebei Key Laboratory of Diagnosis Reconstruction and Anti-disaster of Civil Engineering(2016)
Author brief:Zhang Fang (1974- ), PhD, main interests: evaluation, diagnosis and reinforcement theory of existing bridge, planning and protection of bridge cultural heritage, construction monitoring and health monitoring of long-span bridges, E-mail: fangzhang@swjtu.edu.cn.
Abstract: It is an important research field of bridge engineering to evaluate the safty and adaptability of existing bridges during the remaining service period and put forward maintenane strategies and reinforcement methods, that to put forward maintenance strategies and reinforcement methods, by using modern testing methods, testing technology, evaluation theory, structural theory, numerical simulation, mathematical statistical prediction and other theoretical methods and technical means comprehensively. Based on the literature of 2019, this paper introduces and summarizes the reliability evaluation method of existing bridges based on time-varying theory, reliability calculation method combined with engineering application, maintenance and reinforcement strategy, seismic performance and seismic reinforcement of reinforced concrete pier columns, new materials, new methods and new equipment of bridge reinforcement, etc., in addition, the research prospect is put forward from the aspects of the understanding of the existing structure performance decay, the development of new theories and methods, and the expansion of new research fields according to the actual needs.
Keywords:bridge assessment;bridge maintenance; bridge reinforcement;time varying reliability;bridge seismic resistance; structure performance decay
近年來,中國橋梁建設成績斐然。隨著2018年港珠澳大橋建成通車,一批舉世矚目的特大橋梁,如武漢楊泗港長江大橋、廣東虎門二橋坭洲水道橋、福建平潭海峽公鐵兩用大橋也相繼建成通車,2020年江蘇五峰山長江大橋、江蘇滬通長江大橋等還將通車。回望改革開放四十余年,中國橋梁事業取得了突飛猛進的發展。……