- 摘 要
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（1 上海交通大學船舶海洋與建筑工程學院， 上海 200240;2上海市建筑科學研究院 上海市工程結(jié)構(gòu)安全重點實驗室， 上海 200032）
［摘要］針對膠合木梁柱鋼填板螺栓節(jié)點轉(zhuǎn)動時螺栓擠壓孔壁易引起木材劈裂這一問題，研究了內(nèi)貼重組竹板和外包鋼板的加固方法。對未加固對比試件和3個加固試件進行了單調(diào)加載試驗，分析了4個試件的彈塑性剛度、屈服荷載、極限承載力及變形能力。試驗發(fā)現(xiàn)，未加固對比試件U-M發(fā)生典型的螺栓截面處木材劈裂破壞，裂縫擴展變寬導致承載力喪失，而采用內(nèi)貼重組竹板和外包鋼板加固后，膠合木梁柱鋼填板螺栓節(jié)點的抗劈裂性能明顯改善；加固試件B-M，S1-M，S2-M與未加固對比試件U-M相比，最大彎矩分別提高了75-4%，70-4%，117-5%，最大彎矩對應(yīng)的轉(zhuǎn)角分別提高了73-3%，182-7%，348-1%。
［關(guān)鍵詞］膠合木梁柱節(jié)點； 鋼填板螺栓節(jié)點； 抗側(cè)性能； 重組竹； 鋼板
中圖分類號：TU366-3文獻標識碼：A文章編號：1002-848X(2018)10-0056-05
Study on the lateral behavior of glulam beam-to-column connections strengthened with bamboo scrimber and steel plates
Leng Yubing1,2, Chen Xi2, Xu Qingfeng2, Zhao Jincheng1, Chen Lingzhu2
(1 School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2 Shanghai Key Laboratory of Engineering Structure Safety, SRIBS, Shanghai 200032, China)
Abstract:In order to solve the problem of wood splitting caused by the bolt extrusion hole when the bolted connections with slotted-in steel plates of glulam beam-to-column connections were rotated, the reinforcing methods of the inner rebonded bamboo scrimber and the outer encased steel plates were studied. Monotonic loading tests were carried out on the unreinforced comparative specimen and the three reinforced specimens. The elasto-plastic stiffness, yield load, ultimate bearing capacity and deformation capacity of the four specimens were analyzed. The results of the test show that typical unreinforced comparative specimens U-M suffer from wood splitting failure at the bolt section, and the cracks widen to cause a loss of bearing capacity. After being reinforced with the inner rebonded bamboo scrimber and the outer encased steel plates, the anti-cracking performance of bolted connections with slotted-in steel plates of glulam beam-to-column connections is significantly improved; compared to the unreinforced comparative specimen U-M,the maximum bending moments of the reinforced specimens B-M, S1-M, S2-M are increased by 75-4%, 70-4% and 117-5% respectively, and rotating angles corresponding to the maximum bending moment are increased by 73-3%, 182-7% and 348-1% respectively.
Keywords:glulam beam-to-column connections; bolted connections with slotted-in steel plate; lateral resistance; bamboo scrimber; steel plate
*上海市科委青年科技啟明星計劃（15QB1403200），上海市科委標準項目（17DZ2202600）。
通訊作者：許清風，博士，教授級高級工程師，Email: xuqingfeng73@163.com。
