- 摘 要
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全學(xué)友 孫會(huì)郎?。ㄖ貞c大學(xué)土木工程學(xué)院 400045）
[提要] 將后澆帶所在跨的樓面結(jié)構(gòu)視為偏拉桿件模型，并在此基礎(chǔ)上推導(dǎo)出給定跨度發(fā)生△變化時(shí)的約束
拉力計(jì)算公式。分析表明，在其它條件不變的情況下，連續(xù)鋼筋數(shù)量、后澆帶寬度以及連續(xù)鋼筋重心位置對(duì)約束拉力的大小有明顯影響。穿越后澆帶的連續(xù)鋼筋面積越大，則約束拉力越大；后澆帶寬度越大，則約束拉力越??；同等連續(xù)鋼筋面積的情況下，鋼筋重心位置離梁截面的形心越遠(yuǎn)，則約束拉力越小。
[關(guān)鍵詞] 后澆帶 連續(xù)鋼筋 抗裂 約束拉力When floor beam-slab,in which span post-poured strip settled,is taken as eccentrically stretched element, and when span variation△is prescribed, formula for evaluating restraining tensile force is established. The formula tells that, when other things unchanged, such factors as area of continuous bars, width of post-poured strip, as well as center height of total continuous bars, have great influence on the restraining tensile force.The greater is the continuous bar area,the greater is the restraining tensile force. The wider is the post-poured strip, the smaller is the force. And the further is the distance of center of total continuous bars from the center of the beam section,the smaller is the force.
Keywords: post-poured strip; continuous bars; crack resistance; restraining tensile force參 考 文 獻(xiàn)
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