本文關(guān)鍵詞：體外預(yù)應(yīng)力膠合木梁抗彎性能試驗(yàn)研究　出處：《南京工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年05期 　論文類型：期刊論文

  更多相關(guān)文章： 膠合木梁 體外預(yù)應(yīng)力 極限承載力 剛度

【摘要】：為研究體外預(yù)應(yīng)力膠合木梁在靜載作用下的受彎性能,開展了21根膠合木梁的試驗(yàn),其中包括未增強(qiáng)、非預(yù)應(yīng)力增強(qiáng)和體外預(yù)應(yīng)力膠合木梁;通過改變張拉控制應(yīng)力的大小、轉(zhuǎn)向裝置撐桿高度、膠合木梁截面形式,研究木梁破壞形態(tài)與破壞機(jī)制,對(duì)比分析了不同構(gòu)件的極限承載力與抗彎剛度等結(jié)構(gòu)性能。結(jié)果表明:增強(qiáng)或預(yù)應(yīng)力構(gòu)件的破壞形式主要表現(xiàn)為受壓區(qū)屈服破壞;相比未增強(qiáng)膠合木梁,非預(yù)應(yīng)力增強(qiáng)膠合木梁的受彎極限承載能力和剛度分別提高了26.5%和17.6%,而預(yù)應(yīng)力增強(qiáng)膠合木梁則分別提高了28.8%~81.8%和44.9%;此外,通過改變撐桿高度及優(yōu)化木梁截面,也可顯著提高木梁的結(jié)構(gòu)性能。
[Abstract]:In order to study the flexural behavior of the external prestressed glued wooden beam under static load , the tests of 21 glued wooden beams were carried out , including unreinforced , non - prestressed reinforced and external prestressed glued wooden beams . The results showed that the failure modes of the reinforced or prestressed components were improved by 26.5 % and 17.6 % , respectively , and the ultimate bearing capacity and rigidity of the prestressed reinforced glued wooden beams increased by 28 . 8 % 锝，

本文編號(hào)：1371540