分析了旧有房屋地基承载力性状的评价，指出了房屋增层改造设计的具体措施。
It is also an analysis on the evaluation of the ground bearing capacity of the old buildings. Besides, it shows certain measures of the designing in the add-story reconstruction.
既有房屋的套建增层改造已成为土木工程界关注的一个热点问题。
Using out-jacketing structure for storey-adding has become one of the most concerned topics in the circles of civil engineering.
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