抗剪筋承载力(国外英文资料).docVIP

抗剪筋承载力(国外英文资料) The shear resistance is derived Su zhou jintaike engineering reinforcement technology co., LTD [keywords] anti-shear, shear wall, construction seam An overview, In the construction of concrete structures, it is common to encounter the so-called shear reinforcement in the combination of old and new concrete to improve the anti-shear ability of the combination surface. According to the reinforced concrete structure design code planting bar ZhangZhi reinforcement technology 12.2.1 12-2 only bear axial force, and only allow design according to make full use of the calculation model of steel strength; The problem of how to determine its bearing capacity is a problem to be solved when the reinforcement bar is only determined by the shear force. In general, the hardness of steel and concrete varies greatly. When binding surface is under the action of shear force (figure 1), due to the combination of old and new concrete surface of shear capacity is small, fast in faulting and cracks, caused by planting reinforced to withstand shear, reinforced by steel bar in concrete surface of the larger local extrusion, when shear (V) increase to a certain extent, squeezed concrete local may fracturing, prompting component deformation increases, and beyond the normal use of the component. FIG. 1: the deformation of a tendon So, can think of shear reinforcement has certain shear bearing capacity, but should be before the concrete cracking conditions, far cannot achieve the shear strength of reinforced steel. Therefore, the shearing design bearing capacity of the shear reinforcement should be kept in the lower range. The technical conditions and treatment methods of the old and new concrete in the reinforced concrete structure are the same as the setting of concrete construction joints. When placing the concrete at the seams, the following provisions shall be met: (1) the compressive strength of the concrete that has been cast shall not be less than 1.2 (2) in the hardened