研究了钢筋对收缩应力的影响。
The effect of reinforcement on the shrinkage stresses of concrete is studied.
我们发现收缩应力随固化温度直线增加。
Shrinkage stress was found to increase linearly with cure temperature.
利用膨胀单体共聚有可能根本消除收缩应力。
It is probable to removing shrinkage stress thoroughly using expansive monomer on the principle of copolymerization.
而如何正确计算半刚性基层的收缩应力，则是解决这一问题的前提。
How to calculate the contraction stress of semi-rigid pavement is the precondition to solve the problem.
涂层与基体表面的温度差会使涂层产生收缩应力，引起涂层开裂和剥落。
Coating and the substrate surface temperature of the coating would have a bad contraction stress, caused by cracking and peeling off the coating.
通过对混凝土依时的自收缩应变和弹性模量测定，求得依时自收缩应力。
On the basis of measurement of time-dependent auto-shrinkage strains and elastic modulus of concretes, the time-dependent auto-shrinkage stresses may be calculated.
树脂固化时收缩应力的主要原因是单体之间的分子间距离缩短变为共价距离。
The main reason of shrinkage stress during curing period is the change from distance between monomer molecules to covalent distance .
讨论了混凝土收缩简化计算方法及混凝土徐变对温度及收缩应力计算的影响；
The paper studies the simplification calculation method of concrete shrinkage and the calculation of temperature and shrinkage stress that takes the effects of concrete creep into account.
指出裂纹产生的外因是钢水的静压力、热应力、组织收缩应力和其它外力的作用。
It is pointed out that the external causes of cracks originating are effected by static pressure, thermal stress and structural shrinking stress and etc.
然后，根据现有的文献资料，提出混凝土在收缩应力以及温度应力作用下板角应力公式。
Then, according to the existing cultural heritage data, put forward formula of stress in the case of the shrink stress and temperature stress.
推导了温度应力分量和收缩应力分量的数学表达式，建立了面板应力多因素时变分析模型；
The mathematic expressions of temperature stress and dry shrinkage stress are deduced. The time-varying model based on multiple factors of concrete face stress is established.
在上述基础上提出的环墙侧压力、环拉力和温度收缩应力的计算公式，可供工程设计中采用。
On this base, the formula used for calculating the side pressure of ring wall, ring tensile and temperature contraction stress is established for engineering design.
由于后期养护和保温措施不力产生较大的收缩应力和温度应力是引发中后期裂缝的主要原因。
The large shrinkage stress and thermal stress induced by ineffective measures for concrete curing and temperature insulation are the main causes at middle and later stages.
对新开沱河节制闸墩墙的裂缝进行了检测，分析认为温度应力及收缩应力是裂缝产生的主要原因。
The concrete cracks in sluice pier wall of New Kaituo River were checked, and it was found that the temperature stress and shrink stress are the main reasons for cracks formation.
在分析总结国内外已有研究成果基础上，对框架结构的温度、收缩应力分析进行了比较深入的研究。
On the basis of available research results at home and abroad, the temperature and shrinkage stresses of the frame structure has been deeply analyzed.
混凝土桥面铺装在交通荷载、自然因素、温度与收缩应力综合作用下，普遍出现了早期开裂与破坏。
Marly crack and deterioration of many bridge deck overlays have been attributed to the traffic load, nature factor and high thermal or shrinkage stress development in the concrete.
采用自行设计的水泥砂浆塑性收缩应力测试装置研究了低掺量下聚丙烯纤维对水泥砂浆塑性收缩应力影响。
In this paper, the effects of polypropylene fibers on the plastic shrinkage stresses of the cement mortars were investigated by use of self-designed plastic shrinkage stresses measuring device.
在薄板焊接中，由于局部加热和迅速冷却产生了沿焊缝方向的焊接收缩应力，而导致焊接薄板发生屈曲变形。
Localized heating from the welding process and subsequent rapid cooling induces welding shrinkage stresses along weld bead during welding thin-wall plate and causes structural buckling distortions.
在结构长度超长的墙体中采用无黏结预应力技术，可以抵消混凝土的收缩应力和温度应力，提高墙体的抗裂性能。
However, when they are considered with the unbonded prestressed slab together, the seismic performance of the whole structure has not been enough clarified.
钢筋混凝土框架结构的裂缝设计主要是针对温度和收缩应力产生的裂缝，历来有“抗”与“放”两种不同的处理方法。
Cracks design of reinforced concrete structure focuses on the cracks caused by temperature and shrinkage stress which is traditionally controlled through "resistance" and "relieving".
采用自行研制的水泥砂浆塑性收缩应力测试装置和非接触式测长装置，分别研究了低掺量的聚丙烯纤维对水泥砂浆塑性收缩应力和塑性收缩率的影响。
The effects of polypropylene fiber on the plastic shrinkage stress and plastic shrinkage ratio of the mortars were investigated by use of a self-designed measuring device.
主要是明显的尺寸效应和凝固、收缩、应力等问题，避免或减少铸铁井盖的成分偏析、变形、开裂等缺陷的产生。
Is mainly the size effect and solidification, shrinkage, stress and other issues clearly, to avoid or reduce the segregation, iron manhole cover deformation and crack defects.
本文从纤维缠绕张力、树脂收缩、热应力、芯模等方面探讨了对纤维缠绕复合材料制品收缩变形的影响。
The effect on shrinkage deformation of fibre winding composites were considered by discussing the winding tensile resin thermo-shrinkage stress and the mandrels.
大体积，温度应力，补偿收缩。
温度变形和自生收缩变形等受约束形成的拉应力，是引起混凝土早期开裂的主要驱动力；
The tensile stress induced by restrained thermal and autogenous shrinkage deformations was the main driving force of cracking in concrete at early age.
气冷的方法，可以使试样散热更快，达到控制温度的目的，同时也可以减小焊接残余应力和焊接横向收缩变形。
Wind cooling accelerated elimination of heat dissipation, and controlled temperature which made welding transverse contraction deformation and the residual stresses decrease.
已有的测定铸造合金热裂、应力、线收缩参数的仪器不仅操作不便，而且功能单一。
But the instruments of testing heat check, stress and linear shrinkage of casting alloy at present are not only inconvenient in operation but also unitary in function.
利用弹性理论。给出了薄壁圆筒纵向焊缝的横向收缩引起的应力与变形的定量解答。
According to elastic theory, this paper gives quantitative answers of stresses and deformations caused by the lateral contraction of longitudinal welding seam on the thin wall's cylinder.
本文针对体外预应力混凝土简支梁的受力、变形特点，提出了计算体外预应力结构中收缩徐变产生的预应力损失的基本方法。
The paper provided with a method to calculate the pre-stress loss caused with systolic stress in the outside of pre-stress force.
本文针对体外预应力混凝土简支梁的受力、变形特点，提出了计算体外预应力结构中收缩徐变产生的预应力损失的基本方法。
The paper provided with a method to calculate the pre-stress loss caused with systolic stress in the outside of pre-stress force.
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