建筑结构重点（Key building structure）.doc

建筑结构重点（Key building structure） First, individual choice questions 1. Permanent loads are also called constant loads, such as (C) A, crane load B, floor use load C, structure self weight D, wind load 2, load-bearing independent brick column loading surface size shall not be less than (B). A, 240mm x 240mm, B, 240mm * 370mm C, 370mm x 370mm, D, 370mm * 490mm 3, prestressed reinforcement should be adopted (D). A, HRB400, B, HRB335, C, RRB400, D, prestressed steel hinge line. 4 、 the concrete strength grade of prestressed concrete structure should not be lower than (C). A, C15, B, C20, C, C30, D, C40. 5. For multi span continuous slabs, the minimum thickness of unidirectional slabs is span (D) A, 1/20, B, 1/25, C, 1/10, D, 1/40 6, Liang protective layer thickness refers to (B) A, the distance from the outer surface of the stirrup to the surface of the beam, B, the distance from the outer surface of the longitudinal reinforcement to the surface of the beam C, the distance between the center of gravity of the stirrups to the surface of the beam, the distance between the center of gravity of the longitudinal D and the surface of the beam 7. The most destructive feature of the beam is the failure of the loading surface (D) A, tensile steel bars do not yield, compressive zone concrete is crushed At the same time, when the B and the tensile reinforcement yield, the compressive zone concrete is crushed C and pressed zone concrete is crushed first and then subjected to tensile reinforcement The D and the tensile reinforcement yield first, and then the compression zone concrete is crushed 8. When there are three kinds of failure forms of diagonal compression, shear compression and oblique pulling, the general relationship between the shear bearing capacity of the inclined load plane is (D) A, baroclinic destruction capacity = shear compression failure load than diagonal tension failure of bearing capacity B, shear compression failure load or diagonal tension failure bearing bear