汶川地震重灾区典型钢筋混凝土框架结构震害现象

Damage Features of R.C Frame Structures in Wenchuan Earthquake

介绍了5·12四川汶川地震近震源区钢筋混凝土框架结构的震害现象,从房屋整体跨塌、房屋整体严重歪斜、房屋部分集中垮塌、房屋部分楼层垮塌、房屋底层侧移过大等方面总结了震害现象,从剪切、剪压、压屈、压弯、塑性铰等破坏方面分析了梁柱震害现象.从结构平立面布置、结构体系和结构构件等方面初步分析了钢筋混土框架结构破坏的主要原因.

On May 12, 2008, an earthquake with the magnitude of Ms= 8.0 occurred in Wenchuan County, Sichuan Province. Many Buildings in very severely affected areas suffered serious damage or even collapsed, causing heavy casualties and huge economic loss. This paper introduced the damage phenomena of R. C frame buildings in severe affected areas. The damage states of the buildings are characterized by total collapse, extensive sway of building, locally continuous collapse of building, partial story collapse, Partial collapse of building and extensive lateral displacement in bottom story. The damage phenomena of beams and columns are classified into shear failure, shear-compression failure, flexure-shear failure, compression-buckling failure, plastic hinge failure of columns, shear failure of beams. The main reasons of damage of R. C frame structures were preliminary analyzed on the aspect of structural plan and facade layout, structural system and structural element.