Cracking performance and crack closing of retard-bonded prestressed concrete beams
缓粘结预应力混凝土梁抗裂和裂缝闭合性能
Finally,the application of crack closing in engineering is discussed.
通过对４根后张部分预应力混凝土轴拉构件的试验研究，对部分预应力混凝土轴拉构件的受力特性、裂缝展开及闭合的机理进行了理论分析；对“闭合荷载”进行了理论推导，文末就裂缝闭合在工程设计中的应用进行了探讨。
Based on the test results of 12 partially prestressed concrete beams, the crack closing charactistics is studied.
本本根据１２根先张法部分预应力混凝土梁的试验结果，研究了部分预应力混凝土梁的裂缝闭合性能。
Considering the heat exchange between the fracture fluid and the rocks occurred in closure process and by means of building up hydraulic fracture temperature field model,the change of temperature field during the fracture closure process has been figured out and combined with the experiment data of that the temperature affects the fluid flowage .
基于压开裂缝闭合过程中压裂液向储层中渗流的物理过程分析,建立了裂缝闭合过程中压裂液滤失量的数值计算方法。
Firstly, according to theory of fluid flow in porous media, mechanism of leakoff of fracturing fluid during fracture closure was analyzed and a 2D dynamic leakoff model of non-Newtonian fracturing fluid was estab.
首先，依据渗流力学理论对裂缝闭合过程中压裂液的滤失机理进行分析，建立了压裂液滤失的二维数学模型和数值模型。
An attempt is made to study some major factors that affect crack width, crack closure, and deformation of a unbonded partially prestressed concrete (PPC) beam.
通过２６根无粘结部分预应力高强混凝土梁，研究了影响裂缝宽度及裂缝闭合和变形的主要因素，将无粘结部分预应力高强混凝土梁在使用荷载作用下的受力状态转化为偏心受压构件的受力状态，求解非预应力筋的应力，然后采用现有规范裂缝宽度计算公式来求无粘结部分预应力高强混凝土梁的裂缝宽度，并建立了重复荷载作用下的无粘结部分预应力高强混凝土梁裂缝宽度计算公式；应用名义拉应力建立了闭合弯矩计算公式。
The observational result of crack fracture form for rock samples with close crack under unloading after the peak compression shear load.
介绍了对含闭合裂缝岩石试件在达到峰值压剪荷载时卸荷的裂缝断裂形态观察结果。
Cracking performance and crack closing of retard-bonded prestressed concrete beams
缓粘结预应力混凝土梁抗裂和裂缝闭合性能
Research on Designing Methods of Crack-controlling of Partially Prestressed Concrete Beams Considering Crack-closing;
部分预应力混凝土梁考虑裂缝闭合性能的裂缝控制设计方法研究
A Study on Mechanism of Fracturing Fluid Flowback during Fracture Closure and Design of Flowback Procedures;
裂缝闭合过程中压裂液返排机理研究与返排控制
The Study of the Acute Closed Rupture of Achilles Tendon Using the Short Incision and Tenocutaneous Relaxing Suture;
微创腱皮缝合治疗急性闭合性跟腱断裂的研究
Long term effects of end-to-end suture on repairing acute closed Achilles tendon ruptures
急性闭合跟腱断裂端端缝合术后远期疗效观察
Small incision and Absorbable suture for closed Achilles tendon rupture
小切口加可吸收线缝合治疗闭合性跟腱断裂
bounded naturally fractured reservoir
封闭式天然裂缝性储层
COMPREHENSIVE FORECAST ON UNCONFORMITY TRAPS OF SOUTH-SICHUAN PERMIAN SYSTEM YANGXIN SERIES LIMESYONE BREAKS USED EARTHQUAKES DATA
利用地震资料综合预测川南二叠系阳新统灰岩裂缝圈闭
autogenous healing of concrete
混凝土裂缝自行愈合
testing method for bursting strength of seams of knit or woven stretch fabrics
缝合破裂强度测定法
COUPLED RELATIONSHIP BETWEEN CREATED AND NATURAL FRACTURES AND ITS IMPLICATION TO DEVELOPMENT
人工裂缝与天然裂缝耦合关系及其开发意义
Temperature load use and crack width control for monolithic closed coal yard
整体式封闭煤场温度作用取值及裂缝宽度控制
Aqueous Trapping Damage Models for Fracture-pore Tight Sandstone Gas Reservoirs
裂缝—孔隙型致密砂岩气藏水相圈闭损害模式
A crack, crevice, or split.
裂缝裂隙、缺口或裂缝
Une nouvelle méthode de réparation pour la rupture du ligament articulaire--Suture percutanée
关节韧带断裂的一种新缝合法—经皮缝合法
Seams shall be formed by stitching, heat sealing, gluing or any equivalent method. All stitched seam-ends shall be secured.
接缝必须采取缝合、热封、粘合或其他等效方法。所有缝合的接缝端都必须加以紧闭。
Analysis of cracking in secondary lining of tunnels--Analysis of the cause of expansion cracks and corresponding control measures;
隧道复合式衬砌裂缝分析——收缩裂缝原因分析及相应控制措施
The numerical simulation study on the overall hydraulic-fractured reservoir based on the fracture-matrix coupling method
整体水力压裂油藏裂缝—油藏耦合数值模拟研究