洪彧 楊仕力 劉雨 楊永清 蒲黔輝



摘 要:橋梁結(jié)構(gòu)模型試驗作為了解結(jié)構(gòu)真實受力行為及傳力機理最有效的手段之一,在學(xué)術(shù)界和工程界應(yīng)用廣泛。總結(jié)了2019年橋梁模型試驗的研究進展,從靜力模型試驗、疲勞模型試驗、振動臺模型試驗和混合試驗4個方面評述了典型案例以及依托模型試驗開展的關(guān)鍵科學(xué)問題研究;并總結(jié)了模型試驗相關(guān)的新型測試技術(shù)。總結(jié)發(fā)現(xiàn),橋梁模型試驗是探究橋梁結(jié)構(gòu)新設(shè)計、新工藝、新材料安全性、耐久性及適用性的重要手段,也是準(zhǔn)確估計橋梁結(jié)構(gòu)剩余壽命或承載能力的有效方式;針對模型試驗發(fā)展的測試技術(shù)主要集中在結(jié)構(gòu)應(yīng)變、變形、加速度、溫度測試,以及結(jié)構(gòu)缺陷識別等方面。對橋梁模型試驗與新型測試技術(shù)的發(fā)展進行了展望。
關(guān)鍵詞:橋梁;模型試驗;測試技術(shù);靜力模型試驗;疲勞模型試驗;振動臺模型試驗;混合試驗
中圖分類號:U446.1 ? 文獻標(biāo)志碼:R ? 文章編號:2096-6717(2020)05-0001-13
收稿日期:2020-04-23
作者簡介:洪彧(1989- ),女,博士,主要從事橋梁結(jié)構(gòu)受力性能研究、結(jié)構(gòu)健康監(jiān)測,E-mail: hongyu@swjtu.edu.cn。
蒲黔輝(通信作者),男,博士,教授,博士生導(dǎo)師,E-mail: qhpu@vip.163.com。
Received:2020-04-23
Author brief:Hong Yu (1989- ), PhD, main research interest: mechanical behavior of bridge structure, SHM, E-mail: hongyu@swjtu.edu.cn.
Pu Qianhui (corresponding author), PhD, professor, doctorial supervisor, E-mail: qhpu@vip.163.com.
Abstract: As one of the most effective means to understand the real mechanical behavior and transmission mechanism of the structure, the bridge structure model test has been widely used in the academic and engineering fields. In this paper, the research progress of bridge model test in 2019 is summarized. The typical model test applications and the key scientific issues based on model test are reviewed from four aspects: static model test, fatigue model test, shaking table model test and hybrid test. In addition, this paper also summarized the new testing technology related to model test.Through the summary of this article, model test is an important method to investigate the safety, durability and suitability of bridge structures which use new design, new technology, and new material. And its also an effective method to evaluate the residual life or bearing capacity.The testing technology related to the development of model test mainly focus on measurement of strain, deflection, accelerated velocity, temperature, defect identification and so on.In the end of this paper, the development of bridge model test and new testing technology is prospected.
Keywords:bridge; model test; testing technique; static model test; fatigue model test; shaking table model test; hybrid test
隨著交通事業(yè)的發(fā)展,線路對跨越江河湖海、山川溝壑的需求不斷增加,為適應(yīng)復(fù)雜多變的地理環(huán)境,各種形式的大跨橋梁應(yīng)運而生。隨著橋梁設(shè)計中新材料、新工藝的不斷引入,結(jié)構(gòu)關(guān)鍵部位的受力特性、安全性、耐久性、適用性等需特別關(guān)注。盡管現(xiàn)代仿真計算已十分先進,但研究人員仍常采用模型試驗與仿真模擬相結(jié)合的方式來掌握結(jié)構(gòu)真實的受力情況。……