Composite-reinforcement partially-prestressed concrete solid square pile and production method thereof
A technology of concrete piles and composite reinforcement, which is applied to sheet pile walls, buildings, and foundation structure engineering, can solve the problems of not meeting the needs of pile foundation engineering, not improving the complex production process, and weak anti-corrosion ability of the pile body. Achieve the effect of solving the inability to weld, ensuring the thickness, and convenient and reliable overlapping
Inactive Publication Date: 2015-04-29
QINGDAO XINGHE BUILDING MATERIAL +1
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Problems solved by technology
As the prestressed main reinforcement of prefabricated piles, prestressed steel strands have higher strength and better ductility than prestressed steel rods for concrete. It is not easy to be welded and entangled, and the steel skeleton composed of steel cages for prefabricated piles is not easy to make; second, although the prestressed tensioning technology of steel strands used in bridges and other aspects is relatively mature, it is applied to prefabricated piles. There are not many, mainly involving how to anchor the steel strand, tension, release and end treatment after release
[0007] In recent years, research on partially prestressed concrete piles has also appeared in China, which has improved the shortcoming of high brittleness of prestressed concrete hollow piles to a certain extent, such as the partially prestressed concrete hollow square pile developed by Shanghai Zhongji Pile Industry Co., Ltd. , but the prestressed main reinforcement is still made of steel rods, and the production process is centrifugally formed, which does not improve the inherent shortcomings of complex production process and weak anti-corrosion ability of the pile body.
[0008] To sum up, both reinforced concrete square piles and prestressed concrete piles in the domestic market can no longer meet the needs of the current pile foundation engineering; the research on some prestressed concrete piles is still in the preliminary exploration stage; There are no engineering examples with architectural practical value when wires are applied to concrete piles
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[0035] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the composite reinforced partially prestressed concrete solid square pile includes: a concrete pile body 1, the concrete pile body 1 is connected with a concrete pile point 3, and a steel cage 2 is arranged inside the concrete pile body 1; the cross section of the concrete pile body 1 It is square, and the concrete pile tip 3 is square cone-shaped.
[0036]Reinforcement cage 2 comprises non-prestressed main reinforcement 21, prestressed main reinforcement 22 and stirrup 23, and non-prestressed main reinforcement 21 is provided with four, and prestressed main reinforcement 22 is provided with four, and stirrup 23 adopts square spiral stirrup; The prestressed main reinforcement 21 and four prestressed main reinforcements 22 form a reinforcement cage 2 through square spiral stirrups 23. The cross section of the reinforcement cage 2 is a square, and the four non-prestressed main reinforcements 21 are located a...
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Abstract
The invention relates to a composite-reinforcement partially-prestressed concrete solid square pile comprising a concrete pile body. The concrete pile body is connected with a concrete pile tip; a reinforcement cage is arranged within the concrete pile body and comprises non-prestressed main bars, prestressed main bars and hoops; the non-prestressed main bars and the prestressed main bars are hooped with square spiral bars to form the reinforcement cage; the ends, close to the concrete pile tip, of the four non-prestressed main bars at four corners of a square are bent to the center and extended into the concrete pile tip, forming a concrete pile tip anchor bar; a concrete pile tip central reinforcing bar is arranged within the concrete pile tip; the lower end of the concrete pile tip central reinforcing bar is welded to the lower end of the concrete pile tip anchor bar. The composite-reinforcement partially-prestressed concrete solid square pile is good in corrosion resistance, good in deformability, excellent in mechanical property, good in shock resistance and high in capacity of entering rock.
Description
technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a partially prestressed concrete solid square pile with composite reinforcement and a manufacturing method thereof. Background technique [0002] Prefabricated concrete piles have the advantages of saving wood and steel, durable, and low cost. They have been widely used in the foundation engineering of hydraulic construction, industrial construction, civil construction, ports and bridges, and are also commonly used in the support of slopes and foundation pits. Anti-slip or waterproof. The quality of prefabricated concrete piles is more guaranteed than cast-in-situ piles, and the bearing capacity of unilateral concrete is also higher than that of cast-in-situ piles. [0003] In the precast concrete pile foundation market, it mainly includes two categories: prefabricated reinforced concrete piles and prestressed concrete piles. [0004] Prefabricated reinforced concre...
Claims
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Login to View More IPC IPC(8): E02D5/58
CPCE02D5/58E02D5/30E02D2250/0007E02D2250/0046E02D2300/002
Inventor陈金平王传波陈海阳刘晓燕夏彬饶江董海波李建侯兴华刁述红田斌王风民陈明玥隋耀文
OwnerQINGDAO XINGHE BUILDING MATERIAL