【摘要】：順層巖質(zhì)邊坡是工程中較為常見的一種邊坡類型,而彎曲破壞又是順層巖質(zhì)邊坡中常見的破壞形式。當(dāng)邊坡上覆巖體具備下滑條件,巖體前緣下滑受阻,造成坡腳附近順層巖板承受縱向壓應(yīng)力,加上地震力和靜水壓力的共同作用很容易發(fā)生彎曲變形直至彎曲破壞�；趶椝苄园宸�(wěn)定性理論,考慮巖體塑性和邊坡長度的影響,并特別考慮地震力和靜水壓力的影響,建立了彎曲破壞段長度的計(jì)算公式和穩(wěn)定系數(shù)指標(biāo)。將建立的計(jì)算公式與現(xiàn)有分析方法進(jìn)行對(duì)比,給出了兩者的一致性和差異性。結(jié)合渝懷鐵路2個(gè)工點(diǎn)的具體參數(shù),代入公式并采用MATLAB進(jìn)行計(jì)算,所得結(jié)果與現(xiàn)場(chǎng)實(shí)際調(diào)查情況相一致,并且分析了地震影響系數(shù)和巖板塑性參數(shù)的不同取值對(duì)計(jì)算結(jié)果的影響,驗(yàn)證了本文方法的可行性。
[Abstract]:Bedding rock slope is a common slope type in engineering, and bending failure is a common failure form in bedding rock slope. When the overlying rock mass of the slope has the condition of sliding and the front edge of the rock mass is blocked, the bedding slab near the foot of the slope is subjected to longitudinal compressive stress, and the joint action of seismic force and hydrostatic pressure is easy to bend and destroy. Based on the theory of elastic-plastic plate stability, considering the influence of rock mass plasticity and slope length, and especially considering the influence of seismic force and hydrostatic pressure, the calculation formula and stability coefficient index of the length of bending failure section are established. The established formulas are compared with the existing analytical methods, and the consistency and difference between them are given. Combined with the specific parameters of the two sites of Yu-Huai railway, the formula was put in and calculated by MATLAB. The results were in agreement with the actual investigation on the spot. The influence of different values of seismic influence coefficient and plastic parameters of rock slab on the calculation results is analyzed, and the feasibility of this method is verified.
【作者單位】： 西南交通大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51178402)資助
【分類號(hào)】：TU45

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙蕾;;淺談巖質(zhì)邊坡變形破壞模式[J];山西建筑;2008年25期

2 馬毅;王希良;劉振;郭陽陽;;基于模糊因素的巖質(zhì)邊坡地震穩(wěn)定性多模型組合評(píng)價(jià)[J];巖土力學(xué);2011年S1期

3 周金順;俞然剛;倪雨龍;;巖質(zhì)邊坡表層土及植被恢復(fù)方法的探討[J];低溫建筑技術(shù);2011年09期

4 湯平;李剛;徐衛(wèi)軍;;水及開挖卸荷對(duì)巖質(zhì)邊坡穩(wěn)定性影響分析[J];巖土力學(xué);2005年S2期

5 肖芬芬;侍倩;;巖質(zhì)邊坡噴混植生護(hù)坡技術(shù)淺析[J];土工基礎(chǔ);2006年03期

6 劉潤;閆s，

本文編號(hào)：2314762