Methods for analyzing lateral restraint of prestressed concrete structures;
预应力混凝土结构侧向约束影响的分析方法
Based on the measured construction research at its stretching stage of a two-span,post-tensioning bonded partially prestressed concrete continuous beam,the value of friction coefficient,the strain in the concrete beam s cross-section,and the effect of lateral restraint are analyzed and discussed.
5m双跨后张有粘结部分预应力混凝土连续梁进行施工张拉阶段和模拟使用阶段的工程实测,结合我国设计规范和计算机程序,分析和探讨了摩擦系数的取值、混凝土截面应变分布、侧向约束的影响等,得出一些有益的结论,希望对工程设计和施工有所帮助。
The influence of lateral restraints on the prestressed concrete structure has been discussed in many papers and main factors including the style of structures,stiffness ratio of column to beam and method of construction are considered except the distribution of effective prestress.
改变柱梁的线刚度比、摩擦系数进行计算分析发现,侧向约束影响系数将随着梁柱线刚度比的减小而减小,随着摩擦损失的增大而增大;忽略有效预应力的分布得到的结果与实际情况有偏差,这种偏差随着梁柱线刚度比的减小而增大,随着摩擦损失的增大而增大,因此预应力作用受侧向约束的影响应考虑有效预应力的分布。
It proves that the lateral restriction of medium has enhanced the integer stability of steel beam,and the critical bending moment would not decrease when the length exceedes a certain point.
结果表明,周围介质的侧向约束作用显著提高了钢梁的整体稳定承载力,计算长度超过某一界限长度后其临界弯矩不再降低。
The effect of lateral confinement on the ballistic performance of ceramic composite targets was investigated in the impact velocity range 0.
重点研究了弹体入射速度在600~1400 m/s情况下,陶瓷面板侧向约束的影响,发现侧向约束板存在最佳厚度,此时靶板的防护系数最高。
The relationships between the axial compressive stress,axial and lateral strains of the concrete columns were analyzed,an efficiency factor of CFRP strain is proposed and the lateral confinement mechanism of FRP materials for rectangular columns is explored.
探讨了FRP材料约束混凝土矩形柱的侧向约束机理;提出了新的有效约束面积模型及侧向约束压力计算公式。
Based on an engineering project about the unbounded pre-stressed floors in the frame-tube structure in this paper,the effects that lateral restraints have on the mechanical performances of pre-stressed slabs are simply discussed.
结合某框架-核心筒结构无粘结预应力楼盖工程实例,探讨了侧向约束对预应力楼盖受力性能的影响。
The authoor analyses the effect that the lateral restraints in frame structures acts on continuous beam.
分析了预应力框架结构中侧向约束对连续框架梁中预应力值的影响 ,以及这种影响对竖向构件本身的影响 ,提出了侧限系数的计算公式。
The influence of lateral restraints on axial force of beam in multi story prestressed concrete frame is discussed and main factors including method of construction, span number and stiffness ratio of column to beam are considered.
在研究多层预应力混凝土框架侧向约束对梁轴压力的影响规律时 ,重点考虑了施工方法、跨数和梁柱线刚度比等对预应力框架梁轴压力的影响。
By adopting a fully analytic sensitivity analysis method with a predictable effective restraint,an optimization design was conducted of the structural members of a combustion chamber shell in order to better improve the stress concentration condition of the shell in question,prevent any damage from thermal distortion and enhance its load bearing capacity.
用带预测有效约束的全解析敏度分析的方法,对燃烧室壳体构件进行优化设计,能更好地改善燃烧室壳体的应力集中状况和防止热变形损伤,提高其承载能力。
Research of Lateral Restraint Influence on Pre-stressed Effect of Concrete Frame Beam;
预应力混凝土框架梁侧向约束影响的研究
Study on Effect of Lateral Restraint on Mechanical Performance of Unbonded Post-Tensioned Prestressed Floors in Frame-Core Tube Structure;
侧向约束对框架—核心筒结构预应力楼盖受力性能的影响分析
THEORETICAL ANALYSIS OF EFFECT OF LATERAL RESTRAINTS ON RC FRAME BEAMS STRENGTHENED WITH EXTERNAL PRESTRESSING TENDON
体外预应力加固混凝土框架梁侧向约束影响理论分析
Lateral Restraint Forces in Z-Section Roof Systems Using the Component Stiffness Method
运用复合刚度方法对Z型构件支撑屋面系统的侧向约束力分析
Test Research and Simulation Analysis of Steel Tube-Confined Concrete with Different Restrain Condition in the Lateral Impact;
不同约束条件钢管混凝土构件的侧向冲击试验研究与数值分析
Research of Dynamic Stability of Steel Members to Elasticity Support in High Temperature Condition
高温环境下侧向弹性约束对钢柱稳定长度的影响
Left part of a uniqueness constraint. Position over the right nonrepeating roles.
唯一性约束的左侧部分。加在右侧非重复角色上。
Bidding strategy equilibrium of demand side in electricity market with transmission constrains
考虑网络约束的需求侧最优竞价策略
Experiment Research and Numerical Analysis of Lateral Impact Respond of Steel Tube-Confined Concrete at Common Type Restrain;
常见约束类型的钢管混凝土构件侧向冲击响应试验研究与数值分析
Steering-Invariant Constant Beamwidth Beamforming with SOCP Constraints
基于二阶锥约束的方向不变恒定束宽波束形成
Synthesis of adaptive steering-invariant constant-beamwidth pattern with sidelobe constraints
旁瓣约束方向不变恒定束宽波束自适应综合
Left part of a uniqueness constraint. Position over the middle nonrepeating roles.
唯一性约束的左侧部分。加在中间非重复角色上。
Parameter Design and Modeling of the Frontal Driver Restraint System;
前排驾驶员侧约束系统的建模及参数设计
Restraint System s Simulation and Parameter Optimization of Passenger under Automotive Frontal-Crash Condition;
汽车正面碰撞乘员侧约束系统仿真与参数优化
QUASI-PERIODIC MOTIONS OF A THREE-DEGREE-OF-FREEDOM VIBRATING SYSTEM WITH TWO RIGID CONSTRAINS
三自由度双侧刚性约束振动系统的概周期运动
Analysis of the Impact of Wheel’s Camber and Toe-in to Turning Wheel’s Side Skidding
车轮外倾与前束对转向轮侧滑的影响分析
Reverse Three I Restraint Algorithm Based on Lukasiewicz Implication Operator;
基于Lukasiewicz蕴涵算子的-反向三I约束算法
Review on Vertical Restraints Dominated by Retailers;
基于零售商主导的纵向约束研究述评