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(長安大學建筑工程學院，西安 710061)

［摘要］通過8組不同配筋率及砂漿強度的網(wǎng)狀配筋磚砌體試件的中部局壓試驗，分析了砌體的裂縫開展情況、破壞形態(tài)及橫向鋼筋與砂漿兩者的協(xié)同工作性能；并利用有限元軟件ANSYS對砌體試件局壓破壞過程進行了數(shù)值模擬，采用分離式模型，分別用Solid45和Solid65單元模擬磚塊和砂漿，并運用不同的破壞準則對砌體內部應力進行了模擬計算，并與試驗結果對比。提出橫向配筋磚砌體中部局壓承載力公式。

［關鍵詞］橫向配筋磚砌體；局壓；有限元；承載力；局壓強度提高系數(shù)

Study on local compression of horizontally reinforced masonry

Zhang Yufen, Zhao Junhai(Chang´an University, Xi´an 710061,China)

Abstract:8 groups of local compression tests at middle part of masonry with reinforced network are set up, which is different in ratios of steel rod and mortar strengths. Crack, destruction properties and cooperation performance of steel rod and mortar are analyzed. With the finite element analysis software ANSYS, numerical analogue of local compression is conducted for destruction process of tested blocks. With isolated model, Solid45 and Solid65 for brick and mortar, internal stress contribution of block is calculated with different destruction criteria,and the calculating bearing capacity are compared with the test results. At last, bearing capacity formula of local compression at middle part of horizontally reinforced masonry is proposed.