谷倩　张鹏　饶依文　陈荣亮

摘要：

为了验证页岩陶粒混凝土预制构件纵向受力钢筋采用浆锚连接的适用性和可靠性，对采用该连接形式的钢筋连接试件分别进行了单向拉伸、高应力反复拉压和大变形反复拉压试验，分析页岩陶粒混凝土强度和钢筋搭接长度对其连接性能的影响。试验结果表明：所有试件纵筋均未出现滑移，试件的最终破坏均为接头外钢筋被拉断或屈服；采用浆锚连接的钢筋搭接长度不宜小于10laE；当钢筋搭接长度大于等于1.0laE时，随着页岩陶粒混凝土强度的增加，试件接头的极限抗拉强度有所提高。在满足规定的构造要求下，钢筋浆锚连接形式可用于页岩陶粒混凝土预制构件纵向受力钢筋的可靠连接。

关键词：页岩陶粒混凝土；预制构件；浆锚连接；连接性能；试验研究

中图分类号：TU375

文献标志码：A文章编号：16744764（2018）03012409

Abstract：

In order to verify the applicability and reliability of longitudinal reinforcing steel grouted connecting in prefabricated components of shale ceramsite concrete， specimens were tested under monotonic tension test， high strength cyclic load test and large deformation cyclic load test. The influencing factors on connection performance including the strength of shale ceramsite concrete and lapping length of steel were analyzed. The test results indicate that no slippage occurs in all specimens longitudinal steel， and the ultimate failure of all specimens are steel outside the splice broken up or yielding. It is suggested that the lapping length of grouted steel should not be less than 1.0laE. When the lapping length of steel is greater than or equal to 1.0laE， the ultimate tensile strength of splice will be increased with the higher strength of shale ceramsite concrete. The grouted connecting is suitable for the reliable connection of longitudinal reinforcing steel in prefabricated components of shale ceramsite concrete， when it satisfies certain structural requirements.

Keywords：

shale ceramsite concrete；prefabricated components；grouted connection；connection performance；experimental study

页岩陶粒混凝土作为一种轻骨料混凝土，具有高强、轻质、抗震和保温隔热等优点[12]。在中国大力推行“住宅产业化”和“建筑工业化”的背景下，为实现国家提出的“四节一环保”的发展要求及建筑节能减排的目标，在预制装配式结构体系中采用页岩陶粒混凝土这种新型建筑材料是符合当前中国国情的[35]。由于钢筋的连接是钢筋混凝土结构的重要组成部分，因此，将页岩陶粒混凝土应用于预制装配式结构中，且确保预制构件纵向受力钢筋连接的安全可靠是首先要解决的关键问题。

钢筋浆锚连接是哈尔滨工业大学姜洪斌课题组和黑龙江宇辉集团自主研发的一种钢筋连接方式，具有施工简单方便，成本低等优点，这种连接形式被广泛应用于混凝土预制构件间的连接。……