土木工程荷载与设计方法例题.docxVIP

《土木工程荷载与设计方法》计算题答案题3-1广州设防烈度7度，设计基本加速度为0.10g，设计地震分组为第一组，故查表3-2，得，特征周期，地震影响系数最大值为重力荷载计算结构自振周期地震影响系数由于，故计算地震作用下标准值及地震作用下标准值如下：由于，，故故，其中，，，，，故，题4-1A dwelling building has a simply supported reinforced concrete slab having a thickness of 80mm and the span length of 3.3m. The cover layer of the slab uses terrazzo floor, and the bottom is coated with 15mm thick paper pulp plaster. Determine the loading on the slab. (including dead load and live load)Using the data in tables 2-1 and 4-1Dead load: Terrazzo floor: 0.65kN/m2Concrete slab： 25 ×0.08=2kN/m2Paper pulp plaster: 16 ×0.015=0.24kN/m2Total: Gk =2.89 kN/m2Live load: Qk =2.0 kN/m2题4-2The simply supported slab in Fig.4-26 is used as the corridor structure in a dormitory. It has a thickness of 100mm, with upper layer of 20mm thick cement mortor and bottom layer of 15mm thick paper pulp plaster. Determine the loading on the slab along per meter width. (including dead load and live load)Using the data in tables 2-1 and 4-1Dead load on the slab along per meter width:Cement mortor : 20 ×0.02 × 1=0.4kN/mConcrete slab： 25 ×0.1× 1=2.5kN/mPaper pulp plaster: 16 ×0.015× 1=0.24kN/mTotal: Gk =3.14 kN/mLive load load on the slab along per meter width : Qk =2.0× 1 kN/m 题4-3 图：题4-3The plan and section layout of a six-story frame structure located in Guangzhou are shown in Fig.4-27. The story height of ground floor is 5.0m, while it is 4.5m for other floors. The parapet wall is 1.0m high above the top floor. Determine the wind load on the structure in lateral direction and give the loading sketch.solutions：The height of the structure is less than 30m, and the width is less than 1.5, so we have. Using the data in “load code for the design for the design of building structure”, we have:Wide ward wall:Lee ward wall:The height coefficient of wind load of the given height of the building is determined using the roughness in class CThe wind load in main structure can be calculated by the function:. And , can be given in the table 4-4