A construction method of combining permanent and temporary structures for a basement ramp foundation and support structure

Abstract

The application relates to the technical field of building construction, in particular to a basement ramp foundation and supporting structure permanent-temporary combination construction method, which comprises the following steps: permanent-temporary combination section reinforcement cage binding construction; three-time cutting of the bite pile to realize the combination of the supporting structure and the fire truck lane; the basement ramp foundation and supporting structure permanent-temporary combination construction method has the beneficial effects that the combination of the supporting structure and the fire truck lane is realized through partial cutting of the bite pile, the project construction period is shortened under the premise of ensuring the safety and construction quality of on-site construction, the site is saved, manpower and material resources are saved, the construction is convenient and efficient, and good benefits are achieved in the aspects of project quality, progress, cost and safety.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a construction method for combining permanent and temporary foundation and support structures for basement ramps. Background Technology

[0002] Currently, with economic development, my country's urban reconstruction and expansion projects are in a large-scale development stage, requiring the demolition and reconstruction of a large number of existing buildings in cities. These existing buildings are often surrounded by other buildings, and to make better use of the site, the construction process inevitably faces more and more complex technical problems, such as the integration of the support structure close to the property line with the building to be constructed.

[0003] In existing technologies, to ensure the smooth construction of the support structure and the building to be constructed, reduce costs and increase efficiency, reduce safety risks, achieve good economic benefits, and realize perfect contract performance, based on the characteristics of the support structure, the permanent support function of the interlocking piles is achieved in an economical and efficient way by removing part of the interlocking piles. For traditional foundation pit support in narrow sites, the existing technical solution is to adopt the construction scheme of underground continuous walls. Underground continuous walls have low vibration, low noise, high wall rigidity, and good impermeability during construction.

[0004] However, the following situations exist during actual construction: First, the surrounding geology is complex, and it is close to subways, office buildings, and other buildings. Even after geological surveys, it is still difficult to predict underground anomalies. Second, the construction of diaphragm walls requires a large amount of heavy equipment. The site is small, and the work of entering and leaving the site and preparing for construction is time-consuming and labor-intensive, resulting in low economic benefits. Third, when the site is located in a bustling urban area, the transportation of excavated soil and the disposal of degraded mud require expensive costs and a lot of effort. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for combining permanent and temporary foundation and support structure of basement ramps, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a construction method for combining permanent and temporary foundation and support structure of a basement ramp, the construction method comprising the following steps:

[0007] Construction of steel cage binding in the permanent-temporary combined section;

[0008] The interlocking piles were cut in three stages to achieve the integration of the support structure and the fire truck access road.

[0009] Preferably, the construction of the reinforcing cage binding in the permanent-temporary combined section includes the following steps:

[0010] Feeding;

[0011] Preparation;

[0012] In the section of the steel cage that needs to be cut, weld four longitudinal bars according to the drawings, and weld four stirrups for reinforcement.

[0013] The initial welding involves cross-welding the stirrups and main reinforcement bars to fix them in place. The stirrups are then connected side by side and wrapped around the main reinforcement bars twice, and then welded firmly to them.

[0014] During normal welding, the two discs rotate synchronously, causing the stirrups to continuously wrap around the main reinforcement and be welded; the discs are then moved.

[0015] Stop welding by wrapping the two rings together twice to ensure a secure weld.

[0016] Preferably, the reinforcement cage binding construction of the permanent-temporary combined section also includes the following steps:

[0017] Cut the stirrups;

[0018] Separate the fixed plate and move the reinforcing cage to separate the reinforcing cage from the fixed plate;

[0019] Loosen the bolts securing the main reinforcing bar and the moving plate.

[0020] Move the steel cage to separate it from the moving plate;

[0021] Remove the processed steel cage from the rolling mill drum;

[0022] Conduct technical review of the reinforcing cage;

[0023] Laying out the bottom hole of the steel reinforcement cage.

[0024] Preferably, during material feeding, No. 32 main bars are placed on the main bar material rack; No. 12 coiled bars are placed on the stirrup material rack. The main bars are connected by sleeves. Before fabrication, they must be straightened without any local bends. The percentage of tensile steel bar joint area within the same connection section is ≤50%.

[0025] Preferably, during the preparation work, the main reinforcement bars are threaded, the main reinforcement bars are threaded, the main reinforcement bars and stiffening hoops are fixed and welded, the welding pins are hoisted and reinforced, and the hoops are installed on the rolling cage machine.

[0026] Preferably, the three-stage cutting of the interlocking post includes the following steps:

[0027] Drill hole one in the first horizontal section of the plain pile, and then drill hole two from the corresponding position at the top until the two holes are connected and the wire saw diamond rope is passed through.

[0028] An operating platform for a wire saw cutting machine is erected on top of the interlocking pile;

[0029] Drill hole three in the second cut of the horizontal section of the plain pile, and then drill hole four from the corresponding position of the first cut section until the two holes are connected and the wire saw diamond rope is passed through.

[0030] Check the wire saw cutter's fixation. If everything is in order, begin the second cut.

[0031] Drill hole five in the third cut of the horizontal section of the plain pile, and then drill hole six from the corresponding position of the second cut section until the two holes are connected and the wire saw diamond rope is passed through.

[0032] Check the wire saw cutter's fixation. If everything is in order, begin the third cut.

[0033] After the three cuts are completed, the details are roughened to prepare for the subsequent construction of the fire truck access road.

[0034] Preferably, when setting up the operating platform of the wire saw cutting machine on the top of the interlocking pile, the wire saw cutting machine is set up and fixed. When cutting begins, the lifting holes for the cutting part are pre-drilled and pre-lifted. After the cutting is completed, the concrete block is transported away.

[0035] Preferably, during the second cut, the cutting section is pre-drilled with lifting holes, pre-lifted, and after the cut is completed, the concrete block is transported away.

[0036] Preferably, during the third cut, the cutting section is pre-drilled with lifting holes, pre-lifted, and after the cut is completed, the concrete block is transported away.

[0037] Preferably, the rolling mill drum includes a rolling mill drum body, a collar is slidably connected to the surface of the rolling mill drum body, a clamping screw is screwed to the surface of the collar, the clamping screw abuts against the surface of the rolling mill drum body, a connecting strip is fixed to the surface of the collar, a sleeve is fixed to the surface of the connecting strip, a reserved hole and a reserved groove are opened on the surface of the sleeve, a clamping block is movably inserted into the reserved hole, a pressure block is fixed to the surface of the clamping block, a rubber clamping block is fixed between the pressure block and the reserved groove, the reserved groove and the reserved hole are connected, the pressure block is movably inserted into the reserved groove, a pushing ring is sleeved and screwed onto the tube body of the sleeve, a bevel is provided at the end of the clamping block away from the inner ring opening of the sleeve, the bevel faces the pushing ring, and a plurality of actuating plates are fixed on the outer ring surface of the pushing ring.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] The proposed construction method for the permanent and temporary combination of basement ramp foundation and support structure achieves the combination of support structure and fire truck access road by partially removing the interlocking piles. Under the premise of ensuring on-site construction safety and quality, it shortens the project construction period, saves space, manpower and material resources, and is convenient and efficient to construct. It has achieved good benefits in terms of project quality, progress, cost and safety. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the steel cage binding structure for the permanent-temporary combined construction section of the present invention;

[0041] Figure 2 This is a schematic diagram of the three-stage cutting of the interlocking post according to the present invention;

[0042] Figure 3 This is a schematic diagram of the drum structure of the rolling mill of the present invention;

[0043] Figure 4 This is a schematic diagram of the sleeve installation structure of the present invention;

[0044] Figure 5 This is a schematic diagram of the sleeve and collar connection structure of the present invention;

[0045] Figure 6 This is a half-sectional schematic diagram of the sleeve and collar connection structure of the present invention.

[0046] In the diagram: 1. Roller body of the rolling mill; 2. Collar; 3. Clamping screw; 4. Connecting strip; 5. Sleeve; 6. Reserved hole; 7. Reserved groove; 8. Pressing block; 9. Rubber clamping block; 10. Clamping block; 11. Pushing ring; 12. Actuating plate. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1

[0049] This invention provides a technical solution: a construction method for combining permanent and temporary foundation and support structures for basement ramps, the construction method comprising the following steps:

[0050] Construction of steel cage binding in the permanent-temporary combined section;

[0051] The interlocking piles were cut in three stages to achieve the integration of the support structure and the fire truck access road.

[0052] Example 2

[0053] See attached document Figure 1 Based on Example 1, the construction of the steel cage binding for the permanent-temporary combined section includes the following steps:

[0054] For material loading, the No. 32 main reinforcement bar is placed on the main reinforcement bar rack; the No. 12 coiled reinforcement bar is placed on the stirrup bar rack. The main reinforcement bars are connected by sleeves. Before fabrication, they must be straightened and have no local bends. The percentage of the area of ​​the tension reinforcement bar joints in the same connection section is ≤50%.

[0055] Preparation work includes threading the main reinforcement bars, threading the main reinforcement bars, fixing and welding the main reinforcement bars and stiffening hoops, hoisting and reinforcing the welding pins, and installing the hoops on the rolling cage machine.

[0056] In the section of the steel cage that needs to be cut, weld four longitudinal bars according to the drawings, and weld four stirrups for reinforcement.

[0057] The initial welding involves cross-welding the stirrups and main reinforcement bars to fix them in place. The stirrups are then connected side by side and wrapped around the main reinforcement bars twice, and then welded firmly to them.

[0058] During normal welding, the two discs rotate synchronously, causing the stirrups to continuously wrap around the main reinforcement and be welded; the discs are then moved.

[0059] To terminate the welding, wrap the two rings side by side twice to ensure a secure weld;

[0060] Cut the stirrups;

[0061] Separate the fixed plate and move the reinforcing cage to separate the reinforcing cage from the fixed plate;

[0062] Loosen the bolts securing the main reinforcing bar and the moving plate.

[0063] Move the steel cage to separate it from the moving plate;

[0064] Remove the processed steel cage from the rolling mill drum;

[0065] Conduct technical review of the reinforcing cage;

[0066] Laying out the bottom hole of the steel reinforcement cage.

[0067] Example 3

[0068] See attached document Figure 2 Based on Example 2, the process of cutting the interlocking post in three stages includes the following steps:

[0069] Drill hole one in the first horizontal section of the plain pile, and then drill hole two from the corresponding position at the top until the two holes are connected and the wire saw diamond rope is passed through.

[0070] A wire saw cutting machine operating platform is set up on top of the interlocking pile. The wire saw cutting machine is set up and fixed. When cutting begins, the lifting holes for the cutting part are pre-drilled and pre-lifted. After the cutting is completed, the concrete block is transported away.

[0071] Drill hole three in the second cut of the horizontal section of the plain pile, and then drill hole four from the corresponding position of the first cut section until the two holes are connected and the wire saw diamond rope is passed through.

[0072] Check the wire saw cutting machine for fixation. If everything is in order, start the second cut. Drill lifting holes in advance for the section to be cut and pre-lift it. After the cut is completed, transport the concrete block away.

[0073] Drill hole five in the third cut of the horizontal section of the plain pile, and then drill hole six from the corresponding position of the second cut section until the two holes are connected and the wire saw diamond rope is passed through.

[0074] Check the wire saw cutting machine for fixation. If everything is in order, start the third cut. Drill lifting holes in advance for the section to be cut and pre-lift it. After the cut is completed, transport the concrete block away.

[0075] After the three cuts are completed, the details are roughened to prepare for the subsequent construction of the fire truck access road.

[0076] Example 4

[0077] See attached document Figures 3 to 6 The winding drum of the winding drum includes a winding drum body 1. A collar 2 is slidably connected to the surface of the winding drum body 1. A clamping screw 3 is screwed to the surface of the collar 2, and the clamping screw 3 abuts against the surface of the winding drum body 1. A connecting strip 4 is fixed to the surface of the collar 2, and a sleeve 5 is fixed to the surface of the connecting strip 4. A reserved hole 6 and a reserved groove 7 are opened on the surface of the sleeve 5. A clamping block 10 is movably inserted into the reserved hole 6, and a pressure block 8 is fixed to the surface of the clamping block 10. The pressure block 8 and the reserved groove 7 are connected... A rubber clamping block 9 is fixed in the middle, the reserved groove 7 and the reserved hole 6 are connected, the pressure block 8 is movably inserted into the reserved groove 7, a pushing ring 11 is sleeved and screwed onto the tube body of the sleeve 5, the clamping block 10 has an inclined surface at one end away from the inner ring opening of the sleeve 5, the inclined surface faces the pushing ring 11, and multiple actuating pieces 12 are fixed on the outer ring surface of the pushing ring 11; the pushing ring 11 is screwed to squeeze the inclined surface to push the clamping block 10 toward the inner ring opening of the sleeve 5, and the steel bar inserted into the sleeve 5 is clamped and limited by the clamping block 10.

[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for combining permanent and temporary foundation and support structure of a basement ramp, characterized in that: The construction method includes the following steps: Construction of steel cage binding in the permanent-temporary combined section; The interlocking piles were cut in three stages to achieve the integration of the support structure and the fire truck access road; The construction of the steel cage binding in the permanent-temporary combined section includes the following steps: Feeding; Preparation; In the section of the steel cage that needs to be cut, weld four longitudinal bars according to the drawings, and weld four stirrups for reinforcement. The initial welding involves cross-welding the stirrups and main reinforcement bars to fix them in place. The stirrups are then connected side by side and wrapped around the main reinforcement bars twice, and then welded firmly to them. During normal welding, the two discs rotate synchronously, causing the stirrups to continuously wrap around the main reinforcement and be welded; the discs are then moved. To terminate the welding, wrap the two rings side by side twice to ensure a secure weld; The construction of the steel cage binding in the permanent-temporary combined section also includes the following steps: Cut the stirrups; Separate the fixed plate and move the reinforcing cage to separate the reinforcing cage from the fixed plate; Loosen the bolts securing the main reinforcing bar and the moving plate. Move the steel cage to separate it from the moving plate; Remove the processed steel cage from the rolling mill drum; Conduct technical review of the reinforcing cage; Laying out the bottom hole of the reinforcing cage; The process of cutting the interlocking post in three stages includes the following steps: Drill hole one in the first horizontal section of the plain pile, and then drill hole two from the corresponding position at the top until the two holes are connected and the wire saw diamond rope is passed through. An operating platform for a wire saw cutting machine is erected on top of the interlocking pile; Drill hole three in the second cut of the horizontal section of the plain pile, and then drill hole four from the corresponding position of the first cut section until the two holes are connected and the wire saw diamond rope is passed through. Check the wire saw cutter's fixation. If everything is in order, begin the second cut. Drill hole five in the third cut of the horizontal section of the plain pile, and then drill hole six from the corresponding position of the second cut section until the two holes are connected and the wire saw diamond rope is passed through. Check the wire saw cutter's fixation. If everything is in order, begin the third cut. After the three cuts are completed, the details are roughened to prepare for the subsequent construction of the fire truck access road. During the second cut, pre-drill lifting holes in the section to be cut, pre-lift the concrete block, and after the cut is completed, transport the concrete block away. During the third cut, pre-drill lifting holes in the section to be cut, pre-lift the concrete block, and after the cut is completed, transport the concrete block away.

2. The construction method for a combination of permanent and temporary foundation and support structure for a basement ramp according to claim 1, characterized in that: When loading materials, the No. 32 main bars are placed on the main bar material rack; the No. 12 coiled bars are placed on the stirrup material rack. The main bars are connected by sleeves. They must be straightened before fabrication and there should be no local bending. The percentage of the area of ​​the tensile steel bar joints in the same connection section should be ≤50%.

3. The construction method for a combination of permanent and temporary foundation and support structure for a basement ramp according to claim 2, characterized in that: During the preparation work, the main reinforcement bars are threaded, the main reinforcement bars are threaded, the main reinforcement bars and stiffening hoops are fixed and welded, the welding pins are hoisted and reinforced, and the hoops are installed on the rolling cage machine.

4. The construction method for a combination of permanent and temporary foundation and support structure for a basement ramp according to claim 3, characterized in that: When setting up the operating platform for the wire saw cutting machine on top of the interlocking pile, set up and fix the wire saw cutting machine. When starting to cut, drill lifting holes in advance for pre-lifting. After the cutting is completed, transport the concrete block away.

5. The construction method for a combination of permanent and temporary foundation and support structure for a basement ramp according to claim 1, characterized in that: The winding drum of the winding machine includes a winding drum body (1), a collar (2) is slidably connected to the surface of the winding drum body (1), a clamping screw (3) is screwed to the surface of the collar (2), the clamping screw (3) abuts against the surface of the winding drum body (1), a connecting strip (4) is fixed to the surface of the collar (2), a sleeve (5) is fixed to the surface of the connecting strip (4), a reserved hole (6) and a reserved groove (7) are opened on the surface of the sleeve (5), and a clamping block (10) is movably inserted into the reserved hole (6). The pressure block (8) is fixed on the surface of the clamping block (10). A rubber clamping block (9) is fixed between the pressure block (8) and the reserved groove (7). The reserved groove (7) and the reserved hole (6) are connected. The pressure block (8) is movably inserted into the reserved groove (7). A push ring (11) is sleeved and screwed onto the tube body of the sleeve (5). The end of the clamping block (10) away from the inner ring of the sleeve (5) is provided with a bevel. The bevel faces the push ring (11). Multiple actuating pieces (12) are fixed on the outer ring surface of the push ring (11).

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