基于钢丝网水泥砂浆加固土坯砌体力学性能试验研究

Experimental Study on the Mechanical Properties of Adobe Masonry Strengthened with Ferrocement Mortar

依据新疆地区土坯的常用尺寸,参照砌体基本力学性能试验方法设计了6组未加固和6组钢丝网水泥砂浆加固土坯砌体试块,分别对未加固土坯砌体及钢丝网水泥砂浆加固土坯砌体进行抗压、抗剪强度试验,抗剪试验采用对角加载方式。试验结果表明,土坯砌体用钢丝网水泥砂浆加固后其抗压、抗剪强度有明显的提高。本文将分析土坯砌体加固前后抗压、抗剪性能的变化、土坯砌体抗剪强度指标、变形能力提高程度以及破坏模式等,分析加固后承载力提高的原因,并通过试验优化钢丝网水泥砂浆加固后土坯砌体的抗压承载力计算公式。

Based on the common size area of Xinjiang adobe, with reference to the test methods of basic mechanical properties of adobe, 6 group unreinforced and 6 group reinforced by ferrocement mortar are designed, the compressive and shear strength tests are carried out respectively for these adobe, and the shear tests are applied by diagonal loading method. The experimental results show that the compressive strength and shear strength of adobe brickwork reinforced with ferrocement mortar are obviously improved.The changes of compressive and shear properties before and after consolidation, the shear strength index of adobe brickwork, the degree of improvement of deformation capacity and the failure mode are anlayzed, the reasons for the improvement of the bearing capacity after the reinforcement are studied, and the calculation formula of the compressive bearing capacity of the masonry after the reinforcement byferrocement mortar is optimized.