1、bridge engrgpart iipart 2 rc & pc beam bridge第二篇 鋼筋混凝土和預應力混凝土梁式橋chapter 3 第三章 analysis of simple supported beam bridge 簡支梁橋的計算3）荷載橫向分布系數計算方法l杠桿原理法 method based on mechanics of leveragel偏心壓力法method based on stiffness transverse connectionl橫向鉸接梁（板）法l橫向剛接梁法l比擬正交異性板法 3.3 computation of coefficients

2、of transverse distribution of loads 荷載橫向分布計算 3.3 computation of coefficients of transverse distribution of loads 荷載橫向分布計算3. method based on stiffness transverse connection偏心壓力法1）assumption 基本假設 the stiffness of the transverse connection is very strong, the deformation of the connection is negligible

3、. 橫梁剛性極大,剛性橫梁的微小變形可以忽略不計 p/2p/2ppblffff f 3.3 computation of coefficients of transverse distribution of loads 荷載橫向分布計算3. method based on stiffness transverse connection偏心壓力法2）suitability of the assumption 基本假設的適用范圍 試驗證明，當b/lmcmcm0m0mcm0m0mc m0邊梁 中梁 3.3 computation of coefficients of transverse distr

4、ibution of loads 荷載橫向分布計算荷載橫向分布系數沿橋跨的變化的幾種情況：mcm0m0mcm0m0mcm0m0mcm0m0q0影響線mc影響線 3.4 computing the internal forces of the main girder 主梁內力計算1.恒載內力計算 結構自重 橋面鋪裝 附屬設施重量根據施工的過程決定分別計算不同階段的恒載 3.4 computing the internal forces of the main girder 主梁內力計算2. 活載內力計算1)()1 (yyypmqmsiikckcm0mcpky1mc影響線荷載橫向分布系數pkqkr

5、cqms人 3.4 computing the internal forces of the main girder 主梁內力計算2. 活載內力計算)(2)1 (2010ymmqaqmypmsckkckmckq0影響線荷載橫向分布系數m0mcpkqkay1y220)(2ymmqaqmsckrc人 3.4 computing the internal forces of the main girder 主梁內力計算3. 內力組合對于簡支梁，最不利組合：1.2 恒荷載恒荷載+1.4 汽車荷載汽車荷載+0.8 1.4 人群荷載人群荷載 3.4 computing the internal forces of the