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城市建设理论研究—市政工程, 2022 GB50017—2003《钢结构设计规范》给出的工字梁抗剪极限承载力计算公式考虑了翼缘对腹板的约束作用，未考虑翼缘自身刚度对抗剪极限承载力的贡献，因而得到结果较为保守。论文针对规范中存在的不足，对高强钢焊接工字梁抗剪极限承载力进行有限元分析，在现有可以考虑翼缘自身刚度对抗剪极限承载力贡献计算式的基础上，根据有限元计算结果建议了高强钢焊接工字梁抗剪极限承载力的计算式。
郭 鹏, 忻 仕超, 程 海宇
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Effect of Freezing on Wind Erosion Resistance of Sand Dune Soil [PDF]
[Objective] To investigate the effect of winter soil freezing on soil erodibility and anti-erodibility in the Yellow River section of the Ulan Buh Desert.
DOU Chunhua +4 more
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, 2019 为研究干湿循环对花岗岩残积土抗剪强度特性和抗剪强度参数的影响,分析花岗岩残积土边坡的稳定性,改进了常规的单元试验方法.以整个花岗岩残积土边坡为试验对象进行干湿循环模拟,在每次循环后直接在边坡坡面上切取花岗岩残积土试样进行直剪试验.在此基础上,利用有限元软件ABAQUS对一实际边坡进行了干湿循环的数值模拟,在每次循环模拟前对上一次模拟结果进行分析,将等效塑性应变较大区域的土体强度进行适当折减,分析每次循环后花岗岩残积土边坡的应力应变、稳定性以及塑性变形.试验结果表明:花岗岩残积土的抗剪强度随干湿循环次数 ...
于佳静, 张波, 王晖, 陈东霞
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Experimental research on low and strength characteristics of coal slime based cemented filling material [PDF]
To study the flow and strength characteristics of coal slime based backfill materials, orthogonal tests were used to design one cemented backfill material combining coal slime, high-water-content materials, cement, and fly ash.
Baifu AN +5 more
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Characteristics and causes analysis of Nandianzi landslide in Lingtai County, Gansu Province [PDF]
, 2023 On October 3, 2021, a large landslide occurred at the loess-mudstone interface in Nandianzi, Lingtai, its successful early warning measures preventing casualties.
Chaodong WAN +7 more
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, 2012 非饱和残积土是厦门地区诸多填方工程的工程用土,而岩土工程的强度与稳定性问题都涉及到非饱和土的抗剪强度及其指标.采用滤纸法测定非饱和残积土的基质吸力,通过一系列的直接剪切试验,测定不同初始含水量状态下土的抗剪强度及其强度指标.试验结果表明:基质吸力随着含水量、体积含水量或饱和度的增加而减小.当含水量小于16%,体积含水量大于35%或者饱和度大于70%时,基质吸力对含水量的变化非常敏感.在低基质吸力区,抗剪强度随着基质吸力的增加显著增加,表观粘聚力随基质吸力的增大而线性增加;在高基质吸力区 ...
倪健 +4 more
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Strength degradation of soft interlayer under dry-wet cycles based on 3D printing technology [PDF]
Soft interlayers are critical geological formations that significantly impact the stability of slopes in water and hydropower engineering projects. This study investigated the shear mechanical characteristics and failure mechanism of the soft interlayer ...
Hao LIU, Lei LU, Wen ZHANG
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Key Technology of Construction Process Control of Guide Frame Platform Suction Bucket Foundation [PDF]
, 2023 [Introduction] The present, design and construction technology of suction bucket foundation is not mature, and there is lack of the normative guidance documents, the special research on the key technology of the construction process control of the ...
Huaquan LIU +4 more
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振动荷载对厦门地区红黏土抗剪强度影响的试验与分析 [PDF]
, 2007 以厦门某建筑工地红黏土为试样,进行振动荷载作用前、后三轴剪切对比试验。通过对试验数据的分析,对振动荷载对试样的黏聚力、内摩擦角、抗剪强度方程、抵抗侧向变形能力等的影响特性进行研究。研究结果显示,在其他试验条件相同的情况下,经振动荷载作用后的红黏土试样黏聚力降低51.72%,内摩擦角减少50%,抗剪强度线向下显著偏移,表明振动荷载不利于红黏土的稳定和承载 ...
俞登荣, 胡华, 顾恒星
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Mechanical behaviors of soft rocks based on the fractional thermal elastic-plastic theory [PDF]
, 2021 Soft rocks have complex thermodynamic behaviors and their strength maybe increase or decrease with temperature. In this paper, the soft rocks were considered as heavily over-consolidated clays and their preconsolidation pressure was assumed to be the ...
Li, H, Ma, B, Sheng, D, Zhang, S
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