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陳長興
（北京中建建筑設(shè)計院 100073）[提要] 有肋梁墩式筏板基礎(chǔ)是由柱墩、基礎(chǔ)梁和基礎(chǔ)底板組成，柱荷載通過柱墩擴散到基礎(chǔ)梁和基礎(chǔ)底板，最后傳到地基。與一般的筏板基礎(chǔ)有所不同，由于有柱墩，有肋梁墩式筏板基礎(chǔ)梁的內(nèi)力需按變截面梁計算。本文導(dǎo)出了變截面梁的固端彎矩和剪力，給出了多跨變截面連續(xù)梁的彎矩系數(shù)和剪力系數(shù)，并通過實例說明帶柱墩的剛性基礎(chǔ)梁計算方法。
[關(guān)鍵詞] 柱墩 筏板基礎(chǔ) 彎矩 剪力In stump-raft-ribbed beam foundation, a vertical load spreads over ribbed beam and foundation plate across stump, at last the ground carries it. Different from general raft foundation, the inner force of ribbed beam is calculated as variable section because of the stump. The bending moment, the shear force of variable section and their coefficient of continuous be.ams on many supports of variable section are given. As an example, the design calculation of stump-raft-ribbed beam foundation is introduced.
Keywords: stump; raft foundation; ribbed beam; bending moment; shear force
