The test results another is made of four welded equal - leg angles with show that the ribs ( lips ) cohere with concrete very well before the specimens are damaged , and the damage modes are mainly of shear forms 结果表明:薄壁钢管混凝土短柱以剪切破坏模式为主;肋与混凝土在试件破坏之前,均能保持良好粘结。