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According to the rich design experience of the writer, the basic types, the cause of formation and characteristics of cracks on concrete structure are analyzed. Besides, the concrete structure no-joints design conception and thought are proposed. Taking the basement structure design for the Qatar Foreign Ministry Building for example, the design method, design requirement and constructional measures...
Prestressed Steel Reinforced Concrete (PSRC) Structure is a new system by combining PC technology and steel reinforced concrete (SRC) structure, and is a technical innovation to the conventional structures, such as concrete structures, PC structures and SRC structures. Because having much virtue, for instance high bearing capacity, fine serviceable performance, covering and over loading capability,...
The contrast experiments between 8 lightweight aggregate concrete entity beams and 4 common concrete entity beams are compared and failure modes are studied. The research indicates that the cracking moment for lightweight aggregate concrete of the same strength grade are slight larger than ordinary concrete beams . Aggregate categories have a little influence on the cracking moment. The cracking moment...
Based on the equivalence principle of deflection and torsional displacement, the concentrated vertical load acting on the Continuously Reinforced Concrete Pavement(CRCP) transverse crack is translated into the equivalent half-wave sine load by Fourier transform. On the basis of the translation principle of the force, the half-wave sine vertical load acting on the CRCP transverse crack is decomposed...
Based on the fact that the longitudinal cracks occurring in the hollow slab bridge in practical using, this paper discusses the torsional rigidity changes after cracking, and finds out the general equation about the transverse distribution coefficient of the cracked hollow slab bridge. After analysing the transverse distribution coefficient of the cracked slab, the change law of the transverse distribution...
Eight simply supported dry-mixed self-compacting concrete (DSCC) beams and two normal concrete beams were tested and flexural behavior of the tested DSCC beams (including deflection, strain and crack) were studied. The results showed that water ratio and coarse aggregate ratio played important role in deformation performance and bearing capacity of flexural members. Deflection and maximum crack width...
Eight simply supported dry-mixed self-compacting concrete (DSCC) beams and two normal concrete beams were tested and flexural behaviors of the tested DSCC beams were studied besides failure characteristics. When water ratio and coarse aggregate ratio are appropriate, based on the experimental results DSCC beams also have the failure process, including elastic, cracking, yield and ultimate point in...
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