【摘要】：隨著城市建設(shè)發(fā)展的需要,有兩種甚至多種開挖深度的深基坑越來越常見,但設(shè)計時常按開挖較深側(cè)單邊設(shè)計,忽略兩側(cè)開挖深度不同帶來的影響�；诘戎盗悍�,通過改進(jìn)開挖較淺側(cè)圍護(hù)結(jié)構(gòu)所受土壓力模式,推導(dǎo)了能考慮兩側(cè)挖深不同的支撐式圍護(hù)結(jié)構(gòu)深度計算公式,探討了基坑開挖的非對稱程度對圍護(hù)結(jié)構(gòu)插入比的影響。結(jié)果表明,相比于僅按單邊設(shè)計,挖深較深側(cè)對挖深較淺側(cè)的推擠作用會使挖深較淺側(cè)圍護(hù)結(jié)構(gòu)插入比增大,增大的幅度隨非對稱開挖程度的增加而增大,且挖深較深側(cè)挖深越大,增大效應(yīng)越顯著。工程實(shí)例表明,綜合考慮兩側(cè)挖深差異的影響,比僅按挖深較深側(cè)單邊設(shè)計更加經(jīng)濟(jì)、合理。
[Abstract]:With the development of urban construction, it is more and more common for deep excavation with two or more kinds of excavation depth, but the design is often designed according to the deep side of excavation, ignoring the influence of different excavation depth on both sides. Based on the equivalent beam method, by improving the earth pressure model of shallow side retaining structure, a formula for calculating the depth of braced retaining structure with different excavation depth on both sides is derived. The influence of the asymmetry degree of excavation on the insertion ratio of retaining structure is discussed. The results show that, compared with the one-sided design, the pushing and squeezing effect of the deeper side to the shallow side will increase the insertion ratio of the shallow side of the excavation, and the amplitude of the increase will increase with the increase of the degree of asymmetric excavation. The larger the depth, the greater the effect. The engineering example shows that it is more economical and reasonable to consider comprehensively the influence of dipping difference between two sides than the unilateral design only by deep side.
【作者單位】： 浙江大學(xué)濱海和城市巖土工程研究中心;華東交通大學(xué)土木建筑學(xué)院;
【基金】：973項目(No.2015CB057801) 江西省落地計劃成果轉(zhuǎn)化項目(No.KJLD4036)~~
【分類號】：TU473

【相似文獻(xiàn)】

相關(guān)期刊論文 前6條

1 周文_e;關(guān)于“用不均衡力矩及側(cè)力傳播法分析跨變R[構(gòu)”的，

本文編號：2356263