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(廣州地鐵設(shè)計(jì)研究院股份有限公司， 廣州 510669)

［摘要］提出了一種能夠適用于內(nèi)支撐系統(tǒng)的裝配式地鐵車(chē)站施工方案，并對(duì)其支撐、腰梁及地下連續(xù)墻節(jié)點(diǎn)進(jìn)行了靜載足尺試驗(yàn)，對(duì)比了腰梁與連續(xù)墻之間采用鋼板連接及接駁器連接兩種不同連接方式下節(jié)點(diǎn)的整體力學(xué)性能。結(jié)果表明：采用兩種不同連接方式的節(jié)點(diǎn)最終破壞方式較接近，首先均是支撐頂部的受力鋼筋發(fā)生受拉屈服，隨著懸臂端荷載增大，在正應(yīng)力及剪應(yīng)力的作用下支撐底部的混凝土達(dá)到雙軸抗壓強(qiáng)度，混凝土發(fā)生破壞，試件失效；鋼板連接節(jié)點(diǎn)的水平鋼板能夠較好地協(xié)調(diào)不同位置處鋼筋的應(yīng)力并且提供更高的承載力和更好的延性。 

［關(guān)鍵詞］裝配式地鐵車(chē)站；節(jié)點(diǎn)力學(xué)性能；鋼板連接；接駁器連接；靜載足尺試驗(yàn) 

中圖分類(lèi)號(hào)：TU398-7 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)24-0130-06

Experimental study on mechanical performance of joints of strut-waist beam-diaphragm wall joint connected by steel plate and mechanical coupler

MAI  Jia’er,  LU  Xiaozhi,  HE  Guanhong,  PEI  Xingkai 

(Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510669， China) 

Abstract: A new prefabricated subway station construction method that can be applied to the internal support system was proposed. A static full-scale test on the strut-waist beam-diaphragm wall joints were carried out. The overall mechanical properties of the joints under the two different connection methods of the steel plate connection and the mechanical coupler connection used between the waist beam and the continuous wall were compared. The results show that the failure modes of the joints under the two connection modes are similar. The failure starts from the longitudinal reinforcement at the top of the support yielding, and then during the load increasing, the concrete at the bottom achieves biaxial compressive strength under normal and shear stress. The concrete was crushes and the specimen failed. The horizontal steel plate at the steel plate connection points can better coordinate the stress of the steel bars at different locations and provide higher bearing capacity and better ductility. 

Keywords:prefabricated subway station； mechanical properties of the joint； steel plate connection；mechanical coupler connection； static full-scale experiment

 作者簡(jiǎn)介：麥家兒，學(xué)士，高級(jí)工程師，Email:570739788@qq.com； 通信作者：盧曉智，碩士，工程師，Email：843080713@qq.com。