- 摘 要
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黃清猷 （武漢市建筑設(shè)計院 430014）
[提要] 依據(jù)箱（筏）基礎(chǔ)變位及周邊土的抗力分布計算公式，以基礎(chǔ)埋深（矗）為目標(biāo)函數(shù)，利用基底接觸應(yīng)力強(qiáng)度平衡條件，導(dǎo)出箱基埋深的計算公式。同時應(yīng)用算例，揭示了箱基埋深取決于地震設(shè)防烈度（或風(fēng)荷載強(qiáng)度）、地基土質(zhì)條件以及建筑結(jié)構(gòu)動力特性等因素的綜合作用的結(jié)果。以往沿用以樓高(H)的某一分?jǐn)?shù)值(如H/15)來確定箱基埋深的方法是失妥的且常偏不安全。
[關(guān)鍵詞] 高層建筑 箱基 埋深計算According to the deformation of the box/raft foundation and the calculating methods for distribution of soil stress around the foundation, taking the embedded depth (h) as target function and contacting stress of base as equilibrium condition, the calculation formula of embedded depth of box/raft foundation is derived. The example reveals the embedded depth of the box/raft base is determined by seismic action, wind loads, soil condition and dynamic characteristic of the building structure. The research shows taking the fraction value of the building height as embedded depth of base is not proper and safe.
Keywords: box/raft foundation; embedded depth; high building; calculation
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