建立了粘结应力沿锚固长度的分布模式。
The distribution model of bond stress over the splice length is developed.
钢筋和混凝土之间粘结应力的大小与哪些因素有关?
What are the factors influencing the bond stress between rebar and concrete?
测量的关键参数是型钢与混凝土之间的粘结应力和滑移。
Key parameters measured are bond stress and slip between structural steel and concrete.
得出了计算粘结应力、滑移及钢筋应力的非线性实用公式。
Some practical formulas of nonlinear analysis are obtained for calculating the bond stress, the slip and the stress of steel bar.
组合板叠合面上的粘结应力在单元长度范围内是均匀分布的;
The longitudinal shear stress is uniform distribution at the rage of element length;
无约束试件在达到最大粘结应力之后劈裂破坏,此时的滑移很小。
In unrestraint specimens, at the slip displacement was very small, the splitting failure of concrete was observed when the maximum bond stress was reached.
并对测试结果进行了拟合,得出了锚固段粘结应力分布的拟合方程。
Making use of nonlinear curve fitting, distribution equation of bond stress of the fixed unit anchor length is achieved.
最后,提出粘结强度的简化计算公式和粘结应力-相对滑移关系的简化模型。
Finally, the simplified formulas for the bond strength and the simplified model for bond stress versus relative slip relationship are suggested based on the analysis of the test results.
采用了连续自动的采集方式,测出了较完整的粘结滑移曲线以及粘结应力沿埋长的分布。
The whole bond slip curve and bond stress distribution along embedded length were measured by continuous automatic collection.
在配筋直径相当的情况下,开裂粘结应力和破坏粘结应力与筋种无关,而只与混凝土的抗拉强度有关。
It shows that the failing stress is independent of kinds of reinforcement, but relate to tensile strength of concrete.
根据试验结果,拟合了平均粘结强度表达式,得到了局部粘结应力最大值和混凝土立方体抗压强度的关系。
According to the test consequences, equations of average bond stress, relationship between the maximum local bond stress and concrete cubic compression strength are proposed.
在连续载荷下,因为磨损和压紧,该滑动面是光滑的,将导致粘结应力的进一步下降,类似于无节钢筋的情况。
Under continued loading the sliding surface is smoothed due to wear and compaction, which will result in a further decrease of the bond stress, similar to the case of plain bars.
根据实测应变分布,得到沿粘结长度界面粘结应力分布,并通过计算分析,对局部粘结滑移关系进行了初步探讨。
The effect of bond length on bond performance is examined. The failure mode, the FRP strain and bond stress distributions, and the local bond -slip relationship are all discussed.
对于这两种类型的测试设置,循环粘结应力滑移关系,循环应变保税玻璃钢到混凝土接缝和分布状况,提出讨论。
For both types of test set-up, the cyclic bond stress-slip relations, and cyclic strain distribution profiles for the bonded FRP-to-concrete joints are presented and discussed.
研究表明:活性粉末混凝土与钢筋的极限粘结应力随着钢筋直径的增加而下降,钢筋直径相同时随着锚固长度的增加而降低。
Results indicate that the ultimate bond stress between bars and RPC decreases with the increase of bar diameter or with anchorage length when bar diameter is the same.
试验结果表明高性能混凝土中添加0.5%(体积比)的钢纤维对极限粘结强度略有提高,峰值粘结应力对应的滑移有较大的增长;
The experimental results indicated that when 0.5%(volume fraction) steel fibers were added to HPC, the ultimate bond stress was improved and the corresponding slip was also increased.
给出了爆炸荷载作用下锚筋动应变及动粘结应力的时程分布曲线和空间分布曲线,研究了锚长、加载速率和加载方式等各种因素的影响。
Time history curve and space curve of the dynamical strain and bond stress of insert rebar with different anchorage length and loading conditions were gained.
在试验研究的基础上,本文还给出了CFR P绞线筋的粘结应力-滑移曲线的理论方程,并提出了CFR P绞线筋的相对粘结特性系数的设计建议。
In addition, bond stress-slippage curves of CFRP strands and design Suggestions for coefficient of relative bond properties of CFRP strands are presented based on the tests.
无粘结部分预应力混凝土同普通预应力混凝土相比具有很多有优点,在公路和铁路桥梁工程中得到广泛应用。
Compared with normal prestressed concrete, unbonded partially prestressed concrete has a lot of advantages, it is used extensively in highway and railway bridge engineering.
本文的主要研究内容是型钢混凝土结构和无粘结预应力混凝土结构的抗震性能和设计理论。
The main contents of this thesis are the aseismatic performance and design theory of steel reinforced concrete structures and unbonded prestressed concrete structures.
无粘结预应力混凝土梁的分析要比有粘结混凝土梁复杂得多。
Analysis of beams prestressed with unbonded tendon is much more complicated than that of bonded concrete beams.
无粘结预应力混凝土扁梁楼盖在高层、大跨建筑中广泛应用。
Unbonded prestressed concrete flat beam floor is widely applied in the structures above mentioned.
基于两榀接近足尺的后张有粘结预应力混凝土框架的试验,对多跨预应力框架的内力重分布进行了研究,重点考虑了框架的连续性和轴压比的影响。
Based on tests of two full-scale double-span prestressed frames, internal force redistribution of frame was studied and continuity of structures and axial compression ratio of column were analyzed.
结合实际工程,介绍了无粘结预应力楼盖开洞改造工程的设计、施工等技术,为预应力工程改造设计和施工提供了经验和参考。
Based on the practical engineering, the author introduces design and construction of opening unbounded prestressed concrete slabs, which gives reference for other projects.
劲性混凝土柱无粘结预应力转换大梁,是应用在高层建筑的一种新型结构。
Unadhesive prestressed converted deep beam of composite steel concrete column, is a new style structure which used in high building.
体外预应力是无粘结预应力的一种。
由于无粘结预应力混凝土构件中预应力钢筋与周围混凝土之间可以相对滑动,导致了构件受力和变形不同于有粘结预应力混凝土构件。
Because the reinforcing bar and surroundings concrete can have opposite slip in unbonded prestressed concrete, Lead to stress and deflection differing from bonded prestressed concrete structure.
给出了无粘结预应力混凝土梁强度和受力性能的分析结果。
The analytical results for strength and behavior of unbonded prestressed concrete beams were presented.
给出了无粘结预应力混凝土梁强度和受力性能的分析结果。
The analytical results for strength and behavior of unbonded prestressed concrete beams were presented.
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