Prestressed pipe pile end bearing capacity testing device and method
A technology for the bearing capacity of prestressed pipe piles and pile ends, which is applied in the testing of foundation structures, construction, foundation structure engineering, etc. The effect of bearing capacity and reducing test cost
Active Publication Date: 2017-11-03
ZHEJIANG UNIV
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Problems solved by technology
[0003] However, in the actual construction process of prestressed pipe piles, due to improper construction methods, quality problems are prone to occur, and the desired effect is often not achieved. A large number of practical data show that the pile side friction of prestressed pipe piles after construction can generally meet the design requirements. Requirements, but the pile end resistance is prone to be lower than the design value due to the floating of the prestressed pipe pile, which will affect the safe and normal use of the prestressed pipe pile
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and implementation steps.
[0022] Such as figure 1 with 2 As shown, a prestressed pipe pile end bearing capacity test device, the test device is composed of a prestressed pipe pile and a built-in bearing capacity test device built in the prestressed pipe pile. The applicable prestressed pipe pile includes a hollow prestressed pipe pile body 2 and a conical pile shoe 1. The conical pile shoe 1 is divided into an embedded part and a cone part, and the embedded part is embedded in the prestressed pipe pile body. The 2 bottom makes the two connected as one. After the prestressed pipe pile is sunk, the pile body is prone to float, so that the bearing capacity of the pile end is lower than the design value, which affects the safe and normal use of the prestressed pipe pile. Therefore, in this embodiment, a hollow channel is opened in the conical spud can 1 for grouting at t...
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The invention discloses a prestressed pipe pile end bearing capacity testing device and method, and belongs to the field of testing equipment. Reinforcement of the soil at the hollow prestressed pipe pile end is realized through a tapered pile shoe with a hollow channel inside; and quantitative estimation of the prestressed pipe pile end bearing capacity is achieved through the pile end bearing capacity testing device, and thus the bearing capacity characteristics of a prestressed pipe pile after construction is finished is more accurately grasped. The method is simple and reliable in principle, easy and convenient to operate and wide in applicable working condition and is less affected by site construction conditions.
Description
technical field [0001] The invention belongs to the field of testing equipment, and in particular relates to a device and method for testing the pile end bearing capacity of prestressed pipe piles. Background technique [0002] As an important link in engineering construction, pile foundation engineering has a decisive impact on the quality and economic benefits of the entire project. In pile foundation engineering, prestressed pipe piles have the advantages of stable and reliable quality, high concrete strength of the pile body, good hammering resistance, short construction period, small impact on the environment, and low cost per unit bearing capacity, and have been widely used in recent years. It is used in the foundation engineering of buildings and structures. [0003] However, in the actual construction process of prestressed pipe piles, due to improper construction methods, quality problems are prone to occur, and the desired effect is often not achieved. A large num...
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IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 王奎华刘鑫童魏烽
Owner ZHEJIANG UNIV