本文選題：飽和黏土　切入點(diǎn)：拉剪聯(lián)合作用　出處：《巖土力學(xué)》2016年08期 　論文類型：期刊論文

【摘要】：現(xiàn)有的土體強(qiáng)度研究主要集中在土體受到壓縮剪切作用,而針對單軸拉伸、拉剪耦合或多向拉伸作用的研究較少。當(dāng)前土的聯(lián)合強(qiáng)度理論仍建立在土體受壓縮剪切作用的基礎(chǔ)上,不適用于分析土的抗拉強(qiáng)度和拉剪耦合強(qiáng)度。針對飽和黏土中的拉剪聯(lián)合作用,建立了飽和黏土的張拉-剪切耦合強(qiáng)度模型,給出了飽和黏土張拉-剪切耦合強(qiáng)度公式以及多向拉伸作用下的強(qiáng)度公式;基于已有的飽和黏土試驗(yàn)數(shù)據(jù)以及所做的飽和黏土室內(nèi)試驗(yàn)數(shù)據(jù)對所建立的強(qiáng)度模型預(yù)測能力進(jìn)行了驗(yàn)證,并與其他聯(lián)合強(qiáng)度模型進(jìn)行對比分析,檢驗(yàn)了強(qiáng)度模型的適用性和準(zhǔn)確性;強(qiáng)度模型全面、合理地描述了飽和黏土的壓剪強(qiáng)度、張拉-剪切耦合強(qiáng)度及多向拉伸強(qiáng)度特征,為飽和黏土張拉-剪切耦合問題的解決奠定了理論基礎(chǔ)。
[Abstract]:The existing research on the strength of soil is mainly focused on the compression and shearing of the soil, but for uniaxial tension, The theory of combined strength of soil is still based on the compression and shear action of soil. It is not suitable for analyzing the tensile strength and the tension-shear coupling strength of the saturated clay. The tension-shear coupling strength model of the saturated clay is established for the combined action of tension and shear in the saturated clay. The tension-shear coupling strength formula of saturated clay and the strength formula under multi-direction tension are given. Based on the existing saturated clay test data and the indoor saturated clay test data, the prediction ability of the strength model is verified and compared with other combined strength models. The applicability and accuracy of the strength model are tested, and the strength model is comprehensive and reasonably describes the characteristics of compressive shear strength, tension-shear coupling strength and multi-direction tensile strength of saturated clay. It lays a theoretical foundation for the solution of the tension-shear coupling problem of saturated clay.
【作者單位】： 北京交通大學(xué)土木建筑工程學(xué)院;桂林理工大學(xué)土木與建筑工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(No.51478135) 北京市自然科學(xué)基金資助項(xiàng)目(No.8162032) 中央高�；究蒲袠I(yè)務(wù)費(fèi)項(xiàng)目(No.2015JBM068) 廣西巖土力學(xué)與工程重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(No.14-KF-05)~~
【分類號】：TU442
，

本文編號：1602819