摘要：会馆建筑是人类基本实践活动成果之一,它是由砖、瓦、石、木及其它材料,经历代能工巧匠精心设计,巧妙施工而建成的。它是我们祖先劳动人民智慧的结晶,反映了中国建筑技术、艺术上的成就。

摘要：Frothing is a main disease of highways in Yellow River Flood Field, due to the loss of dynamic strength of roadbed soils under the couple effects of temperature, salt, and vehicle traffic load. This is strongly linked to the dynamic characteristics of silt in this region. To analyze these couple effects on the dynamic characteristics of silt, a series of tests(i.e., freeze-thaw cycling tests, vibration triaxial tests and ultrasonic wave velocity tests) were conducted and two kinds of silt(i.e., salt-free and 3%-salt silt) were designed. The results indicate that the dynamic shear strength and dynamic modulus decrease with increasing freeze-thaw cycles, while the damping ratio simultaneously increases. Furthermore, compared to salt-free silt, the decrement of dynamic shear strength and dynamic modulus of silt with 3% salt is more significant, but the damping ratio of 3%-salt silt is larger. In ultrasonic wave velocity tests, ultrasonic wave velocity of frozen soil specimens decreases as the number of freeze-thaw cycles increases. Based on the results of ultrasonic wave velocity tests, a preliminary model is proposed to evaluate damage of silt through field measurement ultrasonic data. The study could provide a theoretical basis for the treatment of silty soil highway.

摘要：水泥土搅拌桩在黄河三角洲道路复合地基处理中应用愈加广泛。针对滨德高速公路盐渍土地基处治的复杂性,通过开展室内模型试验研究了含盐水泥土桩劣化及边桩桩长对道路复合地基沉降的影响,并从结构和材料双重角度提出复合地基耐久性设计方案,借助数值模拟的方法对各方案的参数选取进行了优化论证,从而弥补了含盐水泥土桩劣化效应的缺陷,为黄河三角洲咸水区道路复合地基的设计提供了一定的参考。

摘要：为了揭示咸水区水泥土桩劣化及改性对道路复合地基的影响,通过室内试验分析黄河三角洲土水的理化性质,研究含盐水泥土的力学特性。基于莫尔-库伦本构模型和强度折减法,利用FLAC3D模拟水泥土桩劣化及改性对复合地基沉降和承载特性的影响。研究发现:地下水基本上为矿化度大于5 g/L的盐水,盐分以氯化物为主;盐的腐蚀作用会使水泥土发生劣化而强度降低;水泥土桩劣化会增大复合地基沉降,降低桩体承载能力;用矿渣微粉对水泥土桩改性可有效提高桩体承载能力、减小复合地基沉降。为此,在咸水区复合地基设计中,充分考虑水泥土桩的劣化效应是确保路基在全寿命周期内具有足够强度和稳定性的关键。