而混凝土结构的实际工作应力又是反映其状况的重要的指标之一，是建筑物改造加固的重要参数之一。
The actual working stress of the concrete structure is one of the important indexes which reflect structure state, and it is one of the important parameters for building alteration and strengthened.
因此，混凝土结构中实际应力的量测就显得尤为必要。
So, the measurement of the actual stress in the concrete structure is particularly important.
本文结合工程实际，介绍了高效减水剂的种类及预应力混凝土施工中对其选用的要求。
This paper Conbines with the engineering reality, introduces the kinds of concertrated water subtractor and its selective claims in prestressed concrete construction.
在大体积混凝土结构的施工、运行过程中，温度、位移、应力的分析研究有着重要的实际意义。
It's of practical importance that research intensively the temperature field, displacements field and stresses field of mass concrete during it's construction and operation.
基于实际情况的需要，研究碾压混凝土坝基础长间歇垫层的温度应力影响因素，对于温控防裂具有重要实用价值。
Based on the actual needs of the situation to study the thermal stress factor for a foundation during long intermittence of roller compacted concrete dam is the great scientific value.
受压区混凝土应力表明，混凝土的破坏面呈扇形弧状分布。这与实际测试结果是一致的。
The stress in concrete compressive zone shows that the fracture surfaces of concrete performs sector-arc distribution which is consistent with the experiment results.
然而混凝上结构中的应力波传播特性实际上又依赖于混凝土在高应变率下的率型本构关系。
Moreover, the characteristics of stress waves propagating in concrete structures are essentially dependent on the rate-dependent constitutive relation of concrete materials under high strain-rates.
指出了预应力钢筋混凝土设计方法和理论上存在的问题，结合当前预应力研究的最新成果，提出了符合工程实际需要的简化设计方法。
Some design problems of prestress reinforce concrete structure are discussed in this paper. According to the proceedings of prestress research, some simplified design methods are introduced.
混凝土热应变包括引起应力的约束应变和自由膨胀热应变，混凝土无约束监测装置的研制正是为了在实际监测中区分出自由应变和约束应变。
Hot strain of concrete includes constrained strain of causing stress and free expansion strain, and then the unconstrained concrete device is designed just for distinguishing them.
然而，目前，国内外学者对预应力型钢混凝土梁的试验研究尚还不多，因此，就阻碍了此种结构形式在实际工程中的广泛应用。
However, there have been only fewer studies on the PSRC beam until now, and result in the application of the PSRC beam is hold up.
结合实际箱梁算例，分析预应力混凝土变截面连续箱梁的挠曲性能。
The flexural behavior of the prestressed concrete continuous box girder with variable cross-sections is analyzed through a practical example.
以实际工程为背景，针对预应力混凝土梁cfrp加固的抗弯受力性能进行了研究。
Based on a practical building project, the bending resistance properties of adopting CFRP strengthening method are studied for prestress concrete beam.
文中着重对不同钢筋混凝土楼盖布置方案的经济性和实际应用效果进行了分析对比，并介绍了对楼盖预应力的施加效果进行的现场测试工作。
The economy and the practicality of different floor framing systems were analysed and compared in detail, and the construction effect of the prestressed floor was tested in situ.
文中着重对不同钢筋混凝土楼盖布置方案的经济性和实际应用效果进行了分析对比，并介绍了对楼盖预应力的施加效果进行的现场测试工作。
The economy and the practicality of different floor framing systems were analysed and compared in detail, and the construction effect of the prestressed floor was tested in situ.
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