【《钢筋混凝土及预应力混凝土桥的短暂状况构件应力计算过程案例》1700字】

钢筋混凝土及预应力混凝土桥的短暂状况构件应力计算过程案例目录TOC\o"1-3"\h\u3102钢筋混凝土及预应力混凝土桥的短暂状况构件应力计算过程案例 1133521.1最大应力验算 1175601.2最小应力验算 4按照《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG3362-2018)第7.2.8条规定，在预应力和构件自重等施工荷载作用下截面边缘混凝土的法向应力应符合下列规定：压应力σcct≤0.70fck’(10-1)拉应力σctt≤1.15ftk’(10-2)1.1最大应力验算支座D06.815.0622.68是是左边跨1/86.536.6222.68是是左边跨1/86.536.6222.68是是左边跨1/46.107.9622.68是是左边跨1/46.107.9622.68是是左边跨3/85.878.4322.68是是左边跨3/85.878.4322.68是是左边跨1/25.369.2022.68是是左边跨1/25.369.2022.68是是左边跨5/84.381.5822.68是是左边跨5/84.381.5822.68是是左边跨3/45.029.0822.68是是左边跨3/45.029.0822.68是是左边跨7/85.517.0022.68是是左边跨7/85.517.0022.68是是1号墩支座4.077.7022.68是是1号墩支座4.077.7022.68是是中跨1/85.677.1522.68是是中跨1/85.677.1522.68是是中跨1/46.325.8522.68是是中跨1/46.325.8522.68是是中跨3/88.262.7222.68是是中跨3/88.262.7222.68是是中跨1/28.812.5122.68是是中跨1/28.812.5122.68是是由整体现浇张拉钢束施工阶段单元截面的施工组合压应力图和表格可知，最大压应力在1号墩支座处，经验算可知满足要求。左边跨1/46.397.4422.68是是左边跨1/46.397.4422.68是是左边跨3/86.117.9822.68是是左边跨3/86.117.9822.68是是左边跨1/25.468.9622.68是是左边跨1/25.468.9622.68是是左边跨5/84.201.7722.68是是左边跨5/84.201.7722.68是是左边跨3/44.301.1122.68是是左边跨3/44.301.1122.68是是左边跨7/84.238.8622.68是是左边跨7/84.238.8622.68是是1号墩支座1.7411.0322.68是是1号墩支座1.7411.0322.68是是中跨1/85.237.7522.68是是中跨1/85.237.7522.68是是中跨1/46.884.9522.68是是中跨1/46.884.9522.68是是中跨3/89.430.9022.68是是中跨3/89.430.9022.68是是中跨1/21.210.3422.68是是中跨1/21.210.3422.68是是由二期施工阶段单元截面的施工组合压应力图和表格可知，最大压应力在左边跨5/8处，经验算可知满足要求。左边跨1/86.185.8522.68是是左边跨1/86.185.8522.68是是左边跨1/45.956.7622.68是是左边跨1/45.956.7622.68是是左边跨3/85.697.2722.68是是左边跨3/85.697.2722.68是是左边跨1/25.078.2022.68是是左边跨1/25.078.2022.68是是左边跨5/83.879.9122.68是是左边跨5/83.879.9122.68是是左边跨3/43.859.5022.68是是左边跨3/43.859.5022.68是是左边跨7/83.728.5522.68是是左边跨7/83.728.5522.68是是1号墩支座1.281.8622.68是是1号墩支座1.281.8622.68是是中跨1/84.747.2522.68是是中跨1/84.747.2522.68是是中跨1/46.434.3822.68是是中跨1/46.434.3822.68是是中跨3/88.870.5522.68是是中跨3/88.870.5522.68是是中跨1/29.63-022.68是是中跨1/29.63-022.68是是由收缩徐变施工阶段单元截面的施工组合压应力图和表格可知，最大压应力在1号墩支座处，经验算可知满足要求。1.2最小应力验算

左边跨1/86.536.62-3.05是是左边跨1/86.536.62-3.05是是左边跨1/46.107.96-3.05是是左边跨1/46.107.96-3.05是是左边跨3/85.878.43-3.05是是左边跨3/85.878.43-3.05是是左边跨1/25.369.20-3.05是是左边跨1/25.369.20-3.05是是左边跨5/84.381.58-3.05是是左边跨5/84.381.58-3.05是是左边跨3/45.029.08-3.05是是左边跨3/45.029.08-3.05是是左边跨7/85.517.00-3.05是是左边跨7/85.517.00-3.05是是1号墩支座4.077.70-3.05是是1号墩支座4.077.70-3.05是是中跨1/85.677.15-3.05是是中跨1/85.677.15-3.05是是中跨1/46.325.85-3.05是是中跨1/46.325.85-3.05是是中跨3/88.262.72-3.05是是中跨3/88.262.72-3.05是是中跨1/28.812.51-3.05是是中跨1/28.812.51-3.05是是由整体现浇张拉钢束施工阶段单元截面的施工组合应力图和表格可知，最大应力在左边跨5/8处，经验算可知满足要求。

截面位置位置及工况容许值(MPa)上缘是否满足下缘是否满足上缘最小(MPa)下缘最小(MPa)端部L8.842.04-3.05是是支座D06.685.18-3.05是是支座D06.685.18-3.05是是左边跨1/86.666.35-3.05是是左边跨1/86.666.35-3.05是是左边跨1/46.397.44-3.05是是左边跨1/46.397.44-3.05是是左边跨3/86.117.98-3.05是是左边跨3/86.117.98-3.05是是左边跨1/25.468.96-3.05是是左边跨1/25.468.96-3.05是是左边跨5/84.201.77-3.05是是左边跨5/84.201.77-3.05是是左边跨3/44.301.11-3.05是是左边跨3/44.301.11-3.05是是左边跨7/84.238.86-3.05是是左边跨7/84.238.86-3.05是是1号墩支座1.7411.03-3.05是是1号墩支座1.7411.03-3.05是是中跨1/85.237.75-3.05是是中跨1/85.237.75-3.05是是中跨1/46.884.95-3.05是是中跨1/46.884.95-3.05是是中跨3/89.430.90-3.05是是中跨3/89.430.90-3.05是是中跨1/21.210.34-3.05是是中跨1/21.210.34-3.05是是由二期施工阶段单元截面的施工组合应力图和表格可知，最大应力在1号墩支座处，经验算可知满足要求。

左边跨1/86.185.85-3.05是是左边跨1/86.185.85-3.05是是左边跨1/45.956.76-3.05是是左边跨1/45.956.76-3.05是是左边跨3/85.697.27-3.05是是左边跨3/85.697.27-3.05是是左边跨1/25.078.20-3.05是是左边跨1/25.078.20-3.05是是左边跨5/83.879.91-3.05是是左边跨5/83.879.91-3.05是是左边跨3/43.859.50-3.05是是左边跨3/43.859.50-3.05是是左边跨7/83.728.55-3.05是是左边跨7/83.728.55-3.05是是1号墩支座1.281.86-3.05是是1号墩支座1.281.86-3.05是是中跨1/84.747.25-3.05是是中