鋼筋混凝土及預(yù)應(yīng)力混凝土橋的短暫狀況構(gòu)件應(yīng)力計(jì)算過程案例目錄TOC\o"1-3"\h\u3102鋼筋混凝土及預(yù)應(yīng)力混凝土橋的短暫狀況構(gòu)件應(yīng)力計(jì)算過程案例 1133521.1最大應(yīng)力驗(yàn)算 1175601.2最小應(yīng)力驗(yàn)算 4按照《公路鋼筋混凝土及預(yù)應(yīng)力混凝土橋涵設(shè)計(jì)規(guī)范》(JTG3362-2018)第7.2.8條規(guī)定，在預(yù)應(yīng)力和構(gòu)件自重等施工荷載作用下截面邊緣混凝土的法向應(yīng)力應(yīng)符合下列規(guī)定：壓應(yīng)力σcct≤0.70fck’(10-1)拉應(yīng)力σctt≤1.15ftk’(10-2)1.1最大應(yīng)力驗(yàn)算支座D06.815.0622.68是是左邊跨1/86.536.6222.68是是左邊跨1/86.536.6222.68是是左邊跨1/46.107.9622.68是是左邊跨1/46.107.9622.68是是左邊跨3/85.878.4322.68是是左邊跨3/85.878.4322.68是是左邊跨1/25.369.2022.68是是左邊跨1/25.369.2022.68是是左邊跨5/84.381.5822.68是是左邊跨5/84.381.5822.68是是左邊跨3/45.029.0822.68是是左邊跨3/45.029.0822.68是是左邊跨7/85.517.0022.68是是左邊跨7/85.517.0022.68是是1號(hào)墩支座4.077.7022.68是是1號(hào)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是是由整體現(xiàn)澆張拉鋼束施工階段單元截面的施工組合壓應(yīng)力圖和表格可知，最大壓應(yīng)力在1號(hào)墩支座處，經(jīng)驗(yàn)算可知滿足要求。左邊跨1/46.397.4422.68是是左邊跨1/46.397.4422.68是是左邊跨3/86.117.9822.68是是左邊跨3/86.117.9822.68是是左邊跨1/25.468.9622.68是是左邊跨1/25.468.9622.68是是左邊跨5/84.201.7722.68是是左邊跨5/84.201.7722.68是是左邊跨3/44.301.1122.68是是左邊跨3/44.301.1122.68是是左邊跨7/84.238.8622.68是是左邊跨7/84.238.8622.68是是1號(hào)墩支座1.7411.0322.68是是1號(hào)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是是由二期施工階段單元截面的施工組合壓應(yīng)力圖和表格可知，最大壓應(yīng)力在左邊跨5/8處，經(jīng)驗(yàn)算可知滿足要求。左邊跨1/86.185.8522.68是是左邊跨1/86.185.8522.68是是左邊跨1/45.956.7622.68是是左邊跨1/45.956.7622.68是是左邊跨3/85.697.2722.68是是左邊跨3/85.697.2722.68是是左邊跨1/25.078.2022.68是是左邊跨1/25.078.2022.68是是左邊跨5/83.879.9122.68是是左邊跨5/83.879.9122.68是是左邊跨3/43.859.5022.68是是左邊跨3/43.859.5022.68是是左邊跨7/83.728.5522.68是是左邊跨7/83.728.5522.68是是1號(hào)墩支座1.281.8622.68是是1號(hào)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是是由收縮徐變施工階段單元截面的施工組合壓應(yīng)力圖和表格可知，最大壓應(yīng)力在1號(hào)墩支座處，經(jīng)驗(yàn)算可知滿足要求。1.2最小應(yīng)力驗(yàn)算

左邊跨1/86.536.62-3.05是是左邊跨1/86.536.62-3.05是是左邊跨1/46.107.96-3.05是是左邊跨1/46.107.96-3.05是是左邊跨3/85.878.43-3.05是是左邊跨3/85.878.43-3.05是是左邊跨1/25.369.20-3.05是是左邊跨1/25.369.20-3.05是是左邊跨5/84.381.58-3.05是是左邊跨5/84.381.58-3.05是是左邊跨3/45.029.08-3.05是是左邊跨3/45.029.08-3.05是是左邊跨7/85.517.00-3.05是是左邊跨7/85.517.00-3.05是是1號(hào)墩支座4.077.70-3.05是是1號(hào)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是是由整體現(xiàn)澆張拉鋼束施工階段單元截面的施工組合應(yīng)力圖和表格可知，最大應(yīng)力在左邊跨5/8處，經(jīng)驗(yàn)算可知滿足要求。

截面位置位置及工況容許值(MPa)上緣是否滿足下緣是否滿足上緣最小(MPa)下緣最小(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是是左邊跨1/86.666.35-3.05是是左邊跨1/86.666.35-3.05是是左邊跨1/46.397.44-3.05是是左邊跨1/46.397.44-3.05是是左邊跨3/86.117.98-3.05是是左邊跨3/86.117.98-3.05是是左邊跨1/25.468.96-3.05是是左邊跨1/25.468.96-3.05是是左邊跨5/84.201.77-3.05是是左邊跨5/84.201.77-3.05是是左邊跨3/44.301.11-3.05是是左邊跨3/44.301.11-3.05是是左邊跨7/84.238.86-3.05是是左邊跨7/84.238.86-3.05是是1號(hào)墩支座1.7411.03-3.05是是1號(hào)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是是由二期施工階段單元截面的施工組合應(yīng)力圖和表格可知，最大應(yīng)力在1號(hào)墩支座處，經(jīng)驗(yàn)算可知滿足要求。

左邊跨1/86.185.85-3.05是是左邊跨1/86.185.85-3.05是是左邊跨1/45.956.76-3.05是是左邊跨1/45.956.76-3.05是是左邊跨3/85.697.27-3.05是是左邊跨3/85.697.27-3.05是是左邊跨1/25.078.20-3.05是是左邊跨1/25.078.20-3.05是是左邊跨5/83.879.91-3.05是是左邊跨5/83.879.91-3.05是是左邊跨3/43.859.50-3.05是是左邊跨3/43.859.50-3.05是是左邊跨7/83.728.55-3.05是是左邊跨7/83.728.55-3.05是是1號(hào)墩支座1.281.86-3.05是是1號(hào)墩支座1.281.86-3.05是是中跨1/84.747.25-3.05是是中