（长安大学建筑工程学院， 西安 710061）

［摘要］为模拟生土基混合结构和生土墙体面层加固中生土和水泥砂浆在竖向荷载下的受力状态，制作4种不同界面处理方式的生土-水泥砂浆试件和素土试件，对其施加竖向压力进行受压试验。对比相同条件下的素土试件，对生土-水泥砂浆界面处的极限承载力、破坏机理和荷载-位移曲线进行了分析。通过上述分析，提出优先采用设置-6@50钢筋拉结的方法进行水泥砂浆面层和生土墙体的连接，也可采用在生土墙体表面凿毛的方法，但凿毛深度不宜低于8mm。试验方法和相关数据可为生土基混合结构研究和生土建筑进行水泥砂浆面层加固提供参考。

［关键词］生土材料； 水泥砂浆； 界面处理方式； 受压试验

中图分类号：TU361文献标识码：A文章编号：1002-848X(2017)17-0103-05

Compression experimental study on specimens with different treatments at raw soil and cement mortar interface

Zhang Youchao, Wang Yihong, Sun Yijia, Shi Xuelei, Gao Yaofei

(School of Civil Engineering, Chang′an University, Xi′an 710061, China)

Abstract:In order to simulate the stress state of the raw soil and cement mortar under the vertical load in reinforcement of raw soil base mixed structure and raw soil wall interface, raw soil-cement mortar and plain soil specimens with four different interface treatments were prepared, and compression experiments were conducted under the vertical pressure. The ultimate bearing capacity, failure mechanism and load-displacement curve of the raw soil-cement mortar interface were analyzed by comparing with the plain soil specimens under the same conditions. Through the above analysis, it is suggested that the method of setting the -6@50 steel bar knot should be used to connect the cement mortar interface and the raw soil wall. And the method of cutting the surface of the raw soil wall can be used, but the cut depth should not be lower than 8mm. The experiment method and the related data can provide reference for the study of raw soil base mixed structure and the reinforcement on raw soil building by cement mortar interface.

Keywords:raw soil material; cement mortar; interface treatment method; compression experiment

*“十二五”国家科技支撑计划课题（2014BAL06B04）,教育部高等学校博士学科点专项科研基金（20130205110012）。

作者简介：张又超，博士研究生，Email：814476290@qq.com。