base vented

基本解釋

For pre-embedded anchor in NC clay, the pullout capacity factors increase with the increasing of the uplift displacement for both attached and vented base.
對於正常固結(jié)土中的預(yù)埋錨板來說，分開和始終粘結(jié)情況下抗拔承載力系數(shù)都是隨著上拔位移的增加而增加。
This phenomenon can be pre vented by choosing the material strictly, controlling the water cement ratio, the slump, the amount of additive as well as the base strength and smoothness.
施工中，嚴把材料關(guān)，控制水灰比，塌落度，外加劑摻量、基層強度和平整度，即可避免混凝土路麪裂縫、斷板。