裂縫伸展 的英文怎麼說
中文拼音 [lièféngshēnzhǎn]
裂縫伸展
英文
crack growth-
A grim ashath tree spreads its hungry clutching roots through the gaping fissures of the walks
一棵愁苦的菩提樹，從破墻的裂縫里伸展出饑餓的爪根。At first, development of various cracks carefully recorded and strains on both the rebars and the stirrups were measured in detail, together with the deflections of the beam. in such a way, correlation between the measured strain profiles of the reinforcement and the observed cracking development of each specimen was pursued. principal factors contributing to the cracking pattern and failure mode were figured out as a result
首先，通過單調靜力加載試驗研究，對梁的裂縫延伸和開展、縱筋應變、箍筋應變、梁的撓度等指標進行了細致的量測，試圖追蹤每一試件在裂縫發展及破壞過程中縱筋應變狀態的變化和裂縫發展程度的相關性，進而總結出有腹筋約束梁裂縫開展及鋼筋應力分佈的一般規律。A major drawback of this kind of rehabilitation is the reflection cracking of the overlay, whereby the cracking pattern existing in the original pavement is extended into and through the new overlays
這種修復方法最主要問題是罩面層的反射裂縫，也就是在原路面中存在的裂縫能夠擴展並延伸到新的罩面層中去。Early age cracking of concrete has re - emerged as an important issue all over the world in recent years. the stress, due to restrained volume change related to thermal deformation and shrinkage in the early age concrete, is the main driving force for the deleterious cracking in the construction stage. during the development of the stress, creep, a very important property of concrete, is always developing. creep contributes to 40 ? - 50 ? reduction of the elastically induced stress in the restrained specimen. ring test, a qualitative test, can provide information to assess the potential for cracking of different concrete. an overview of ring test developed in recent years and mechanism of uniaxial tensile creep test is described in this paper at first. then, an innovative test equipment based on ring test is outlined
近年來混凝土早期裂縫問題再次引起全球工程界的廣泛關注.早期混凝土由於體積變形受到約束而產生的應力是導致混凝土開裂的主要因素.在混凝土應力發展的同時，混凝土徐變也在同時發生著變化.有研究表明，徐變能減少40 ? - 50 ?的早期應力.圓環試驗是用於定性評價混凝土材料抗裂性能的試驗方法之一.本文首先分析了圓環試驗和單軸拉伸徐變試驗的原理，創造性地將圓環試驗用於測量早期混凝土的干縮徐變，並設計了試驗方案Standard test method for notch tensile test to measure the resistance to slow crack growth of polyethylene pipes and resins
測量聚乙烯管和樹脂抗裂縫緩慢擴展的切口拉伸試驗用標準試驗方法分享友人