李庆钢，  张海东，  刘天书
    （辽宁省建筑设计研究院，沈阳110005）

[摘要] 对于地基主要受力层范围内既有杂填土，又局部存在软弱下卧夹层的复杂地质条件，设计上分别采用换填垫层法、调整基础底面积和高压喷射注浆法等不同的地基处理方法来满足上部结构对地基承载力和变形的要求。着重介绍了采用高压喷射注浆法处理软弱下卧夹层，在夹层高度内形成复合地基的设计和质量检验方法。
[关键词] 软弱下卧夹层；复合地基；高压喷射注浆法；换填垫层法

    Ground Treatment of the Electric Power Dispatching and Trade Center of Northeast Grid
    Li Qinggang, Zhang Haidong, Liu Tianshu
    ( Liaoning Provincial Building Design & Research Institute,  Shenyang 110005,  China)

Abstract: There are random fill and locally existing soft interlayer in the mainly supporting layers of subgrade, so the different ground treatment methods of sand cushion substituting the random fill, adjusting foundation dimensions and jet grouting reinforcing the soft interlayer were adopted to satisfy the requirements of subgrade bearing capacity and deformation. The methods of design and quality inspection for the composite subgrade formed from using jet grouting to treat the soft interlayer were described in detail.
Keywords: soft interlayer; composite subgrade; jet grouting; cushion