- 摘 要
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（1 重慶大學土木工程學院， 重慶 400045； 2 重慶大學山地城鎮(zhèn)建設與新技術教育部重點實驗室， 重慶 400045； 3 重慶市建筑科學研究院公路工程研究分院， 重慶 400016）
［摘要］以重慶市某車庫屋面梁大量開裂為例，檢測了該車庫屋面梁結構布局、覆土荷載、裂縫形態(tài)、結構實體施工質量等。根據(jù)實際檢測數(shù)據(jù)，采用ANSYS及SATWE軟件核對了屋面梁承載力，發(fā)現(xiàn)裂縫產生原因與歷史超載、溫度作用、材料收縮和施工控制養(yǎng)護等因素有關，評價了裂縫對結構的安全性影響，并依據(jù)相關文獻，采用了一種新型技術——直剪錨栓鋼板進行加固設計。該工程采用直剪錨栓鋼板加固后，已投入正常使用一年多，效果良好。
［關鍵詞］車庫屋面梁； 開裂； 鑒定； 裂縫處理； 加固方法； 直剪錨栓鋼板
中圖分類號：TU375-1文獻標識碼：A文章編號：1002-848X(2017)15-0085-05
Cracking reason identification of garage roof beams and strengthening treatment of new-type direct-shear-bolted steel plate
Liu Lianjie1,2,3, Zhang Liangliang1,2, Quan Xueyou1,2
(1 School of Civil Engineering, Chongqing University, Chongqing 400045, China; 2 Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing 400045, China; 3 Department of Highway Engineering, Chongqing Construction Science Research Institute, Chongqing 400016, China)
Abstract:Taking garage roof beams with large quantities of beam cracks in Chongqing as case study, structural layout, covering soil load, crack morphology and entity structure construction quality were identified by means of technical methods. According to the actual test data, the ANSYS and SATWE software were used to check the bearing capacity of the roof beams. It′s found that the causes of cracks are related to the historical overload, temperature effect, material shrinkage and construction control and maintenance. Influence of cracks on the safety of the structure is evaluated, and a new-type technique of direct-shear-bolted steel plate was adopted for strengthening design according to the related literature. The project has been put into normal use for more than a year after adopting direct-shear-bolted steel plate for reinforcement. Good effect has been achieved.
Keywords:garage roof beam; cracking; identification; crack treatment; strengthening method; direct\|shear\|bolted steel plate
作者簡介：劉連杰，博士研究生，高級工程師，一級注冊結構工程師，Email：20121601012@cqu.edu.cn。
