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Ductile anti-crack stiff composite pile

A composite pile and ductility technology, applied in the direction of sheet pile wall, building, foundation structure engineering, etc., can solve the problems affecting the strength of cement and soil, and achieve the effect of preventing brittle failure, increasing toughness and crack resistance

Inactive Publication Date: 2018-04-20
沙焕焕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surrounding cement-soil piles of the existing stiff composite piles are prone to bleeding and shrinking to produce cracks, which affect the strength of the cement-soil

Method used

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  • Ductile anti-crack stiff composite pile

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Embodiment Construction

[0017] A ductile anti-crack strength composite pile, including peripheral micro-expansion fiber cement soil 1, mixed with 15% ordinary cement and fiber micro-expansion agent with a cement content of 2% in the soil, and the fiber micro-expansion agent contains 1% polypropylene Fiber, 45% calcium oxide, 35% gypsum, 5% magnesium oxide, 14% aluminum oxide. After the construction of the cement-soil pile is completed, the multi-section prefabricated piles 2 and 3 are inserted into the inner core. The tip of the prefabricated pile is a one-way valve, and 1% steel fiber of the concrete mass is added to the on-site mixed concrete or ready-made concrete to form fiber concrete. Each section is prefabricated When the pile is pressed slightly lower than the joint elevation, the fiber concrete is pumped to the joint through the hollow channel of the prefabricated pile, and then the prefabricated pile is lifted to form a cavity, and the valve pile tip is opened to fill the cavity with fiber c...

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Abstract

The invention discloses a ductile anti-crack stiff composite pile. The ductile anti-crack stiff composite pile comprises micro-expansion fiber cement soil at the periphery, multiple prefabricated piles serving as an inner core and squeezed and expanded fiber concrete, wherein the squeezed and expanded fiber concrete is arranged outside joints of upper segments and lower segments of the prefabricated piles and plays a role in protection. By means of the ductile anti-crack stiff composite pile, roughness and crack resistance of cement soil type piles at the periphery of the stiff composite pilecan be effectively improved; the joints of the upper segments and the lower segments of the core piles are protected; and brittle failure, under the effect of the dynamic load such as an earthquake, of the joints is prevented.

Description

technical field [0001] The invention relates to a ductile anti-crack strength composite pile. Background technique [0002] The surrounding cement-soil piles of the existing stiffened composite piles are prone to bleeding and contraction to produce cracks, which affect the strength of the cement-soil. The core rigid pile is a prefabricated pile that is often divided into multiple sections, and the joints of the upper and lower sections are rigidly connected. In addition, the toughness of the cement soil itself is insufficient, and the joints are prone to brittle failure under dynamic loads such as earthquakes. It is necessary to further improve the pile body structure and materials of stiffened composite piles. Contents of the invention [0003] The purpose of the present invention is to provide a kind of ductility and crack resistance that can increase the toughness and crack resistance of the cement-soil piles around the stiff composite pile, protect the upper and lower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/52E02D5/50E02D5/48C04B28/14
CPCE02D5/523C04B28/14E02D5/48E02D2300/002E02D2300/0045C04B16/0633C04B22/064C04B22/066C04B14/303
Inventor 魏东海沙焕焕邓亚光
Owner 沙焕焕