钢筋混凝土和预应力混凝土梁式桥2.pptxVIP

会计学 1 钢筋混凝土和预应力混凝土梁式桥2 3.3 Computation of Coefficients of Transverse Distribution of Loads 荷载横向分布计算 3. Method based on stiffness transverse connection偏心压力法 1）Assumption 基本假设 The stiffness of the transverse connection is very strong, the deformation of the connection is negligible. 横梁刚性极大,刚性横梁的微小变形可以忽略不计 SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN 第1页/共39页 3.3 Computation of Coefficients of Transverse Distribution of Loads 荷载横向分布计算 3. Method based on stiffness transverse connection偏心压力法 2）Suitability of the assumption 基本假设的适用范围 试验证明，当B/L0.5(称为窄桥)及具有多道横隔梁时， 刚性横隔梁假设是成立的。 SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN 第2页/共39页 3.3 Computation of Coefficients of Transverse Distribution of Loads 荷载横向分布计算 3）Theory 原理 P P L e SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN 3. Method based on stiffness transverse connection偏心压力法 第3页/共39页 3. Method based on stiffness transverse connection偏心压力法 3） Theory 原理 Pointed load at the center P=1 中心荷载作用 Based on the assumption, the deflections of each girder will be the same under the centric load 由刚性横梁假设，中心荷载作用下，各梁的挠度相等。 w1’ w2’ R1’ R2’ R3’ R4’ R5’ w1’= w2’= w3’= w4’= w5’ SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN 第4页/共39页 3. Method based on stiffness transverse connection偏心压力法 P=1 w1’ w2’ R1’ R2’ R3’ R4’ R5’ SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN The relation between deflection and the centric load 简支梁在集中荷载作用下的挠度： 3） Theory 原理 Pointed load at