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（南通聯(lián)瀧裝配式建筑科技有限公司， 南通 226000）

［摘要］自保溫預(yù)制混凝土剪力墻結(jié)構(gòu)體系是一種既能承重，又能實現(xiàn)保溫的新型體系，為配合該體系的應(yīng)用，設(shè)計了一種內(nèi)填保溫芯的連梁截面形式。為研究自保溫預(yù)制連梁在彎矩作用下的受力性能、破壞模式與節(jié)點構(gòu)造，結(jié)合模塊化裝配式混凝土剪力墻結(jié)構(gòu)體系，設(shè)計并制作了3個連梁試件（1個現(xiàn)澆實心對比試件和2個自保溫預(yù)制試件），對其進行低周反復(fù)加載試驗。通過試驗研究表明，自保溫預(yù)制連梁抗彎試件的平均屈服荷載和平均峰值荷載與現(xiàn)澆實心連梁試件相似，平均延性系數(shù)和平均累積耗能略優(yōu)于現(xiàn)澆實心連梁試件。

［關(guān)鍵詞］自保溫預(yù)制連梁； 低周反復(fù)加載試驗； 抗彎性能

中圖分類號：TU375-2文獻標(biāo)識碼：A文章編號：1002-848X(2019)15-0088-06

Experimental study on bending behavior of self-insulating precast coupling beams

Gong Zupin, Dong Niancai, Gong Xuhua

（Nantong Lianlong Prefabricated Construction Technology Co., Ltd., Nantong 226000, China)

Abstract:Self-insulating precast shear wall structural system is a new system to bear load and realize thermal insulation. In order to fulfill the application of self-insulating system, a cross-section form of coupling beam filled with thermal insulation core was designed. To investigate the bending behavior, failure mode and joint structure of self-insulating precast coupling beams, combined with modular assembled shear wall structural system, three groups of self-insulating precast coupling beams, including one group of cast-in-situ solid coupling beam, two groups of self-insulating precast coupling beams, were designed and tested under low cycled reversed loading. Test results indicate that the average yield load and peak load of self-insulating precast coupling beams are similar to those of cast-in-situ solid coupling beam, and the average ductility coefficient and average cumulative energy dissipation are slightly better than those of cast-in-situ solid coupling beam.

Keywords:self-insulating precast coupling beam; low cycled reversed loading experiment; bending behavior