本文選題：混凝土箱梁 + 豎向預(yù)應(yīng)力損失　； 參考：《鐵道學(xué)報(bào)》2014年08期

【摘要】：豎向預(yù)應(yīng)力損失過大是導(dǎo)致混凝土箱梁腹板開裂的主要原因之一,在豎向預(yù)應(yīng)力損失中鋼筋回縮損失占絕大部分。本文提出一種操作簡單、傳感器可以重復(fù)使用的豎向預(yù)應(yīng)力回縮損失測量方法,對6座實(shí)橋豎向預(yù)應(yīng)力回縮損失進(jìn)行實(shí)測,共獲得239個(gè)實(shí)測樣本。樣本檢驗(yàn)表明豎向預(yù)應(yīng)力回縮損失服從皮爾遜Ⅲ曲線y=f(s醁,Cy,Cs)分布,得到滿足工程可靠度0.95的豎向預(yù)應(yīng)力損失值為73.6kN。
[Abstract]:The vertical prestress loss is one of the main causes of the cracking of the web of concrete box girder . In this paper , the vertical prestress loss measurement method is proposed , which is simple in operation , and can be reused by the sensor . The vertical prestress loss of the 6 - seat bridge is measured and 239 measured samples are obtained . The samples show that the vertical prestress loss is subject to Pearson 鈪，

本文編號：1949344