House body foundation precast pile butt joint construction structure

Abstract

The utility model discloses a house body foundation precast pile butt joint construction structure. The structure comprises a lower precast pile; the upper precast pile is in coaxial butt joint with the lower precast pile through a plurality of positioning pins; and the welding layer covers a butt joint gap of the joint surface of the lower precast pile and the upper precast pile. The welding layer covers the butt joint gap of the joint face of the lower precast pile and the upper precast pile, and when the precast pile formed by butt joint of the lower precast pile and the upper precast pile deviates in the downward pressing process, deviation force is dispersed on the welding layer and is not prone to being directly transmitted to a positioning pin through the butt joint gap to cause breakage. The coaxial stability in the pressing process after the lower precast pile and the upper precast pile are in butt joint is improved, and the problem that when the precast piles deviate in the pressing process, force is easily and directly transmitted to a connecting shaft at a certain position through a butt joint gap, breakage occurs, and the coaxial stability in the pressing process of the two precast piles is affected is solved.

Description

Technical Field

[0001] The utility model relates to a butt joint construction structure of prefabricated piles for a house foundation, belonging to the technical field of building construction. Background Art

[0002] When constructing high-rise buildings in coastal plains, the thick silt layer makes it impossible to excavate downward to the rock base to obtain the foundation. Therefore, it is necessary to insert multiple precast piles into the silt layer to the rock base to form the foundation of the building. Since the length of a single precast pile is less than the thickness of the silt layer, the precast piles need to be butt-jointed and lengthened during the silt layer pressing process. When the precast piles are butt-jointed and lengthened, the two piles must be coaxial to withstand the vertical load.

[0003] The existing technology of precast pile docking is shown in Chinese patent announcement number CN110512600B. Although two precast piles can be coaxially docked through a connecting shaft, there is a docking gap between the connecting surfaces of the two precast piles. When the precast piles are offset during the pressing process, the offset force is easily transmitted directly to a certain connecting shaft through the docking gap, causing fracture, thereby affecting the coaxial stability of the two precast piles during the pressing process. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a prefabricated pile butt joint construction structure for a house foundation.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a construction structure for butt jointing prefabricated piles of a house foundation, comprising:

[0007] Install precast piles;

[0008] An upper precast pile, the upper precast pile is coaxially connected to the lower precast pile through a plurality of positioning pins;

[0009] The welding layer covers the joint gap between the lower precast pile and the upper precast pile.

[0010] It also includes a mud layer with a pile guide hole, and the lower prefabricated pile is located in the pile guide hole of the mud layer.

[0011] A metal ring A is pre-embedded and fixed at the end of the lower precast pile. The metal ring A has a plurality of positioning holes for installing a plurality of positioning pins. The outer diameter of the metal ring A has a step.

[0012] A metal ring B is pre-buried and fixed at the end of the upper precast pile. The metal ring B has a plurality of positioning holes for installing a plurality of positioning pins. The outer diameter of the metal ring B has a step.

[0013] The metal ring B step cooperates with the metal ring A step to form a step groove, in which a welding layer is welded and fixed, and the welding layer covers the butt joint gap between the joint surfaces of the lower precast pile and the upper precast pile.

[0014] The lower prefabricated pile at the metal ring A has an installation groove in it, a steel pin plate is installed in the installation groove, both sides of the steel pin plate are elastically displaced and installed in the installation groove through springs, and the steel pin plate is screwed and connected with the positioning pin.

[0015] The upper prefabricated pile at the metal ring B is provided with a mounting groove, a nut is installed in the mounting groove, and the nut is inserted and connected with the positioning pin in a positioning manner.

[0016] The beneficial effect of the utility model is that the welding layer covers the butt joint gap of the connection surface of the lower precast pile and the upper precast pile, and when the precast pile formed by the butt joint of the lower precast pile and the upper precast pile deviates during the pressing process of the precast pile, the deviated force is dispersed on the welding layer and is not easily transmitted directly to the positioning pin through the butt joint gap to cause fracture, thereby improving the coaxial stability of the pressing process of the lower precast pile and the upper precast pile after the butt joint, and solving the problem that when the precast pile is pressed and deviated, the force is easily transmitted directly to a connecting shaft at a certain place through the butt joint gap to cause fracture, thereby affecting the coaxial stability of the two precast piles during the pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model in which the lower prefabricated pile and the upper prefabricated pile are butted together and then pressed down;

[0018] Figure 2 It is a structural schematic diagram of the lower prefabricated pile and the upper prefabricated pile of the utility model when they are butted together;

[0019] Figure 3 It is a cross-sectional schematic diagram of the lower precast pile and the upper precast pile after being butted against each other in the utility model;

[0020] In the figure: 1-silt layer; 11-pile guide hole; 2-lower precast pile; 21-metal ring A; 22-steel pin plate; 23-spring; 3-upper precast pile; 31-metal ring B; 32-nut; 4-locating pin; 5-welding layer. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0022] like Figures 1 to 3 shown.

[0023] A building foundation prefabricated pile docking construction structure of the present application includes:

[0024] The lower precast pile 2 is located in the pile guide hole 11 in the silt layer 1, and a metal ring A21 is pre-buried and fixed at the end of the lower precast pile 2. The metal ring A21 has multiple positioning holes for installing multiple positioning pins 4, and the outer diameter of the metal ring A21 has steps.

[0025] It also includes an upper precast pile 3 connected to the lower precast pile 2, and a metal ring B31 is pre-buried and fixed at the end of the upper precast pile 3. The metal ring B31 has multiple positioning holes for installing multiple positioning pins 4, and the outer diameter of the metal ring B31 has a step. The lower precast pile 2 and the upper precast pile 3 are made of reinforced concrete precast and solidified.

[0026] A welding layer 5 is welded and fixed in the step groove formed by the step of the metal ring B31 and the step of the metal ring A21. The welding layer 5 is welded and fixed to the metal rings B31 and A21. The welding layer 5 covers the butt gap between the lower precast pile 2 and the upper precast pile 3.

[0027] The metal ring A21 of the lower precast pile 2 is positioned and docked with the metal ring B31 of the upper precast pile 3 through multiple positioning pins 4, ensuring the coaxiality of the lower precast pile 2 and the upper precast pile 3 after docking. The welding layer 5 covers the docking gap of the connecting surface of the lower precast pile 2 and the upper precast pile 3. When the precast pile formed by docking the lower precast pile 2 and the upper precast pile 3 deviates during the pressing process, the deviated force is dispersed on the welding layer 5 and is not easily transmitted directly to the positioning pin 4 through the docking gap to cause fracture, thereby improving the coaxial stability of the lower precast pile 2 and the upper precast pile 3 during the pressing process after docking. This solves the problem that when the precast pile is pressed downward and deviates, the force is easily transmitted directly to a connecting shaft at a certain place through the docking gap to cause fracture, thereby affecting the coaxial stability of the two precast piles during the pressing process.

[0028] The lower precast pile 2 at the metal ring A21 has an installation groove in it, and a steel pin plate 22 is installed in the installation groove. The two sides of the steel pin plate 22 can be elastically displaced and installed in the installation groove through springs 23. The steel pin plate 22 has a threaded hole that is screwed and connected with the positioning pin 4. The positioning pin 4 is first screwed and fixed with the steel pin plate 22. When the positioning pin 4 is docked with the upper precast pile 3 on the lower precast pile 2, the positioning pin 4 can be elastically displaced by the spring 23 when a collision occurs, so as to avoid breakage during docking installation.

[0029] The upper prefabricated pile 3 at the metal ring B31 has a mounting groove in which a nut 32 is installed. The nut 32 is provided with a spline groove or a round tooth to be inserted and connected with the positioning pin 4 for positioning.

Claims

1. A construction structure for butt jointing prefabricated piles for building foundation, characterized in that: include: Lower precast piles (2); An upper prefabricated pile (3), the upper prefabricated pile (3) being coaxially connected to the lower prefabricated pile (2) via a plurality of positioning pins (4); A welding layer (5), the welding layer (5) covers the joint gap between the lower precast pile (2) and the upper precast pile (3); A metal ring A (21) is pre-buried and fixed at the end of the lower prefabricated pile (2), the metal ring A (21) has a plurality of positioning holes for installing a plurality of positioning pins (4), and the outer diameter of the metal ring A (21) has a step; The end of the upper prefabricated pile (3) is pre-buried and fixed with a metal ring B (31), the metal ring B (31) has a plurality of positioning holes for installing a plurality of positioning pins (4), and the outer diameter of the metal ring B (31) has a step; The step of the metal ring B (31) cooperates with the step of the metal ring A (21) to form a step groove, in which a welding layer (5) is welded and fixed, and the welding layer (5) covers the butt joint gap between the joint surfaces of the lower precast pile (2) and the upper precast pile (3).

2. The prefabricated pile docking construction structure for the house foundation according to claim 1, characterized in that: It also comprises a mud layer (1) having a pile guide hole (11), wherein the lower prefabricated pile (2) is located in the pile guide hole (11) of the mud layer (1).

3. The prefabricated pile docking construction structure for the house foundation according to claim 1, characterized in that: The lower prefabricated pile (2) at the metal ring A (21) has an installation groove in it, and a steel pin plate (22) is installed in the installation groove. The two sides of the steel pin plate (22) can be elastically displaced and installed in the installation groove through springs (23), and the steel pin plate (22) is screwed and connected with the positioning pin (4).

4. The prefabricated pile docking construction structure for the house foundation according to claim 1, characterized in that: The upper prefabricated pile (3) at the metal ring B (31) has a mounting groove in it, a nut (32) is installed in the mounting groove, and the nut (32) is positioned, inserted and connected with the positioning pin (4).

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