A cast-in-place concrete counter-pressure tower crane foundation device and its construction method

Abstract

The present invention discloses a cast-in-place concrete counter-pressure type tower crane foundation device and its construction method, which includes a concrete foundation bottom plate, a tower crane base, an extruded polystyrene board, a first concrete counter-pressure block, a second concrete counter-pressure block and a clamping mechanism. The tower crane base is installed on the top of the concrete foundation bottom plate, and the extruded polystyrene board is fixedly connected to the top of the tower crane base through the clamping mechanism. The first concrete counter-pressure block is cast on the extruded polystyrene board, and the second concrete counter-pressure block is cast on the first concrete counter-pressure block. This invention changes the traditional construction mode of the tower crane foundation as a single-pile cap or multi-pile cap, and uses the counter-pressure method to fix the tower crane. This structure can effectively bear all the stresses generated during the use of the tower crane, and avoid damaging the already constructed foundation bottom plate. At the same time, during the demolition process of the tower crane, it is safe and fast, and the tower crane base can be recycled after demolition, avoiding waste of materials, and is economical and reasonable.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a cast-in-place concrete counter-pressure type tower crane foundation device and a construction method thereof. Background Art

[0002] During the construction process of construction projects, with the continuous changes in the market and the increasing requirements of customers, more and more owners modify the construction projects during the construction process to meet the market demands. For projects with a large amount of changes, in order to meet the on-site construction needs, it is necessary to add large vertical transportation equipment such as tower cranes. The traditional tower cranes are basically single-pile caps or multi-pile caps. Before the foundation installation, it is necessary to construct the pile foundation first. However, since most of the structures have been constructed during the construction process, it is impossible to construct the pile foundation on-site. Therefore, a cast-in-place concrete counter-pressure type tower crane foundation device and a construction method thereof are studied and proposed, and this device can meet the concept of green construction, energy conservation and environmental protection advocated by modern construction industry. Summary of the Invention

[0003] In order to overcome the above technical problems, the purpose of the present invention is to provide a cast-in-place concrete counter-pressure type tower crane foundation device and a construction method thereof. The structure of the present invention changes the construction mode of the traditional tower crane foundation from a single-pile cap or multi-pile cap, and uses the counter-pressure method to fix the tower crane. This structure can effectively bear all the stresses generated during the use of the tower crane, and avoid damaging the already constructed foundation slab. At the same time, during the demolition process of the tower crane, it is safe and fast, and the tower crane base can be recycled after demolition, avoiding material waste, and being economical and reasonable;

[0004] A layer of extruded polystyrene board is placed between the tower crane base and the first concrete counter-pressure block of the present invention, which can effectively isolate the tower crane base from the first concrete counter-pressure block, so that when the tower crane is demolished later, the tower crane base can be demolished smoothly, and the tower crane base can be recycled;

[0005] A layer of extruded polystyrene board is placed between the tower crane base and the first concrete counter-pressure block. First, the extruded polystyrene board is placed between the four movable plates, then the first air cylinder is driven to push the movable plates to move until the four movable plates are all fixed around the extruded polystyrene board. Finally, the movable plates are fixed by inserting the limiting rods into the limiting holes and jacks. Finally, the extruded polystyrene board is installed on the tower crane base. Through the setting of the slide rails of the present invention, the four movable plates can change with each other, which is suitable for fixing extruded polystyrene boards with different widths and is convenient to use. Through the setting of inserting the limiting rods into the limiting holes and jacks, it is convenient to fix the movable plates and avoid loosening during the installation process of the extruded polystyrene board;

[0006] Bind the concrete crack-resistant steel bars on the placed extruded polystyrene boards, drive the slider to slide up and down, thereby adjusting the height of the support rollers, and then drive the second cylinder to push the support rollers to move, adjusting the distance between the two support rollers to fix the concrete crack-resistant steel bars of different widths, avoiding the shaking of the concrete crack-resistant steel bars. At the same time, the two support rollers are symmetrically arranged and parallel to each other, with a certain height difference, so that the fixing range is wider. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the first concrete counterweight block; the detachable clamping mechanism can be removed after installation for convenient use.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A cast-in-place concrete counter-pressure tower crane foundation device, including a concrete foundation bottom plate, a tower crane base, an extruded polystyrene board, a first concrete counterweight block, a second concrete counterweight block and a clamping mechanism. The tower crane base is installed on the top of the concrete foundation bottom plate, and the extruded polystyrene board is fixedly connected to the top of the tower crane base through the clamping mechanism. The first concrete counterweight block is poured on the extruded polystyrene board, and the second concrete counterweight block is poured on the first concrete counterweight block;

[0009] The clamping mechanism includes a mounting plate. There are four mounting plates, and the four mounting plates are installed in a quadrilateral shape on the top of the tower crane base. One side of the bottom end of the mounting plate is fixedly installed with a first cylinder, and the piston rod of the first cylinder penetrates the mounting plate and is connected to the movable block. The other side of the movable block is horizontally installed with a slide rail, and the inside of the slide rail is slidably connected with a movable plate.

[0010] As a further solution of the present invention: Both sides of the mounting plate are slidably connected with sliders. The sliders are located above the movable plate. A connecting rod is fixedly installed between the two sliders. One side of the connecting rod is fixedly installed with a lifting block. One side of the lifting block is fixedly installed with a second cylinder, and the piston rod of the second cylinder penetrates the lifting block and is connected to the support roller. Guide rods are also fixedly installed on both sides of the support roller, and the other ends of the guide rods penetrate the lifting block.

[0011] As a further solution of the present invention: The four movable plates are arranged in a quadrilateral shape.

[0012] As a further solution of the present invention: The movable plate is evenly provided with limiting holes, and a jack is opened on the movable block. The limiting holes and the jack are inserted with a limiting rod.

[0013] As a further solution of the present invention: The second concrete counterweight block is composed of trapezoidal blocks. The lower bottom length of the trapezoid is 5620mm, the upper bottom length is 2820mm, and the height is 1700mm.

[0014] As a further solution of the present invention: The working steps of the clamping mechanism are as follows:

[0015] Step 1: Place the extruded board between four movable plates, then drive cylinder 1 to push the movable plates to move until the four movable plates are fixed to the periphery of the extruded board. Finally, insert the limiting rod into the limiting hole and the jacking hole to fix the movable plates, and finally install the extruded board on the tower crane base;

[0016] Step 2: Drive the slider to slide up and down to adjust the height of the support roller, then drive cylinder 2 to push the support roller to move and adjust the distance between the two support rollers to fix the concrete crack-resistant steel bars.

[0017] As a further solution of the present invention: A construction method of a cast-in-place concrete counter-pressure type tower crane foundation device includes the following steps:

[0018] Step 1: Install the tower crane base on the concrete foundation floor slab;

[0019] Step 2: Place a layer of extruded board between the tower crane base and the first concrete counter-pressure block. First, place the extruded board between four movable plates, then drive cylinder 1 to push the movable plates to move until the four movable plates are fixed to the periphery of the extruded board. Finally, insert the limiting rod into the limiting hole and the jacking hole to fix the movable plates, and finally install the extruded board on the tower crane base;

[0020] Step 3: Bind the concrete crack-resistant steel bars on the placed extruded board. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the first concrete counter-pressure block;

[0021] Step 4: Bind the concrete crack-resistant steel bars on the poured first concrete counter-pressure block. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the second concrete counter-pressure block.

[0022] The beneficial effects of the present invention:

[0023] The structure of the present invention changes the construction mode of the traditional tower crane foundation from a single-pile cap or multi-pile cap, and uses the counter-pressure method to fix the tower crane. This structure can effectively bear all the stresses generated during the use of the tower crane, and avoid damaging the already constructed foundation floor slab. At the same time, during the demolition process of the tower crane, it is safe and fast, and the tower crane base can be recycled after demolition, avoiding material waste, and is economical and reasonable;

[0024] The present invention places a layer of extruded board between the tower crane base and the first concrete counter-pressure block, which can effectively isolate the tower crane base from the first concrete counter-pressure block, so that when the tower crane is demolished later, the tower crane base can be demolished smoothly and the tower crane base can be recycled;

[0025] Place a layer of extruded polystyrene board between the tower crane base and the first concrete counterweight block. First, place the extruded polystyrene board between the four movable plates, then drive the first cylinder to push the movable plates to move until the four movable plates are fixed to the periphery of the extruded polystyrene board. Finally, insert the limiting rod into the limiting hole and the jacking hole to fix the movable plates. Finally, install the extruded polystyrene board on the tower crane base. Through the setting of the slide rail in the present invention, the four movable plates can change relative to each other, which is suitable for fixing extruded polystyrene boards of different widths and is convenient to use. Through the setting of inserting the limiting rod into the limiting hole and the jacking hole, it is convenient to fix the movable plates and avoid loosening during the installation of the extruded polystyrene board.

[0026] Bind the concrete crack-resistant steel bars on the placed extruded polystyrene board, drive the slider to slide up and down, and then adjust the height of the support roller. Then drive the second cylinder to push the support roller to move and adjust the distance between the two support rollers to fix concrete crack-resistant steel bars of different widths and avoid the concrete crack-resistant steel bars from shaking. At the same time, the two support rollers are symmetrically arranged and parallel to each other, with a certain height difference, so that the fixing range is wider. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the first concrete counterweight block. After the installation is completed, the detachable clamping mechanism can be removed, which is convenient to use. Description of the Drawings

[0027] The present invention will be further described below with reference to the drawings.

[0028] Figure 1 It is a front view structural schematic diagram of the tower crane foundation device of the present invention;

[0029] Figure 2 It is a sectional view taken along the line A-A of the tower crane foundation structure;

[0030] Figure 3 It is a top view structural schematic diagram of the tower crane base of the present invention;

[0031] Figure 4 It is an overall structural schematic diagram of the clamping mechanism of the present invention.

[0032] In the figure: 1, concrete foundation floor slab; 2, tower crane base; 3, extruded polystyrene board; 4, first concrete counterweight block; 5, second concrete counterweight block; 6, clamping mechanism; 61, mounting plate; 62, movable block; 63, slide rail; 64, limiting hole; 65, movable plate; 66, first cylinder; 67, slider; 68, second cylinder; 69, guide rod; 70, connecting rod; 71, support roller; 72, lifting block. Detailed Embodiment

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1-4 As shown in the figure, a cast-in-place concrete counter-pressure tower crane foundation device includes a concrete foundation bottom plate 1, a tower crane base 2, an extruded polystyrene board 3, a first concrete counter-pressure block 4, a second concrete counter-pressure block 5, and a clamping mechanism 6. The tower crane base 2 is installed on the top of the concrete foundation bottom plate 1. The extruded polystyrene board 3 is fixedly connected to the top of the tower crane base 2 through the clamping mechanism 6. The first concrete counter-pressure block 4 is poured on the extruded polystyrene board 3, and the second concrete counter-pressure block 5 is poured on the first concrete counter-pressure block 4.

[0035] The clamping mechanism 6 includes a mounting plate 61. There are four mounting plates 61, and the four mounting plates 61 are installed on the top of the tower crane base 2 in a quadrilateral shape. One side of the bottom end of the mounting plate 61 is fixedly installed with a first cylinder 66. The piston rod of the first cylinder 66 penetrates through the mounting plate 61 and is connected to a movable block 62. The other side of the movable block 62 is horizontally installed with a slide rail 63, and a movable plate 65 is slidably connected inside the slide rail 63.

[0036] Both sides of the mounting plate 61 are slidably connected with sliders 67. A cylinder is fixedly installed at the bottom of the slider 67. The slider 67 is located above the movable plate 65. A connecting rod 70 is fixedly installed between the two sliders 67. One side of the connecting rod 70 is fixedly installed with a lifting block 72. One side of the lifting block 72 is fixedly installed with a second cylinder 68. The piston rod of the second cylinder 68 penetrates through the lifting block 72 and is connected to a support roller 71. Guide rods 69 are also fixedly installed on both sides of the support roller 71. The other end of the guide rod 69 penetrates through the lifting block 72. The two support rollers 71 are symmetrically arranged, and the two support rollers 71 are parallel to each other, generating a certain height difference, so that the fixed range is wider.

[0037] The four movable plates 65 are arranged in a quadrilateral shape.

[0038] Limit holes 64 are uniformly opened on the movable plate 65. A jack is opened on the movable block 62. A limiting rod is inserted into the limit hole 64 and the jack.

[0039] The concrete counter-pressure block 2 5 is composed of a trapezoidal block, the lower base length of the trapezoid is 5620mm, the upper base length is 2820mm, and the height is 1700mm; the outer circle side length of the U-shaped concrete counter-pressure block 1 is 6760mm, the width is 6760mm, the inner circle length is 3360mm, the width is 3360mm, and the height is 800mm; the size of the extruded board is 1800mm×600mm×10mm; the concrete foundation bottom plate is a 350mm thick building foundation bottom plate; the tower crane base is the base that comes with the tower crane, which is mainly a 20# I-beam beam. The base type is different depending on the selected tower crane.

[0040] The working steps of the clamping mechanism 6 are:

[0041] Step 1: Place the extruded plate 3 between the four movable plates 65, then drive the cylinder 1 66 to push the movable plate 65 to move until the four movable plates 65 are fixed around the extruded plate 3, and finally insert the limit rod into the limit hole 64 and the plug hole to fix the movable plate 65, and finally install the extruded plate 3 on the tower crane base 2;

[0042] Step 2: Drive the slider 67 to slide up and down, thereby adjusting the height of the support roller 71, and then drive the cylinder 2 68 to push the support roller 71 to move, adjust the distance between the two support rollers 71, and fix the concrete anti-cracking steel bars.

[0043] A construction method for a cast-in-place concrete back-pressure tower crane foundation device comprises the following steps:

[0044] Step 1: Install the tower crane base 2 on the concrete foundation slab 1;

[0045] Step 2: Place a layer of extruded board 3 between the tower crane base 2 and the concrete counter-pressure block 1 4. First, place the extruded board 3 between the four movable boards 65. Then drive the cylinder 1 66 to push the movable board 65 to move until the four movable boards 65 are fixed around the extruded board 3. Finally, insert the limit rod into the limit hole 64 and the plug hole to fix the movable board 65. Finally, install the extruded board 3 on the tower crane base 2.

[0046] Step 3: Tie concrete anti-cracking steel bars on the placed extruded board. After the steel bars are tied, close the mold and pour C25 concrete to complete the production of concrete counter-pressure block 4.

[0047] Step 4: Tie concrete anti-cracking steel bars on the poured concrete counter-pressure block 1 4 . After the steel bars are tied, close the mold and pour C25 concrete to complete the production of the concrete counter-pressure block 2 5 .

[0048] Working principle of the present invention:

[0049] Place a layer of extruded polystyrene board 3 between the tower crane base 2 and the first concrete counterweight block 4. First, place the extruded polystyrene board 3 between the four movable plates 65, then drive the first cylinder 66 to push the movable plates 65 to move until the four movable plates 65 are all fixed around the extruded polystyrene board 3. Finally, insert the limiting rod into the limiting hole 64 and the jack to fix the movable plates 65. Finally, install the extruded polystyrene board 3 on the tower crane base 2. Through the setting of the slide rail, the four movable plates 65 can change relative to each other, which is suitable for fixing extruded polystyrene boards 3 of different widths and is convenient to use. Through the setting of inserting the limiting rod into the limiting hole 64 and the jack, it is convenient to fix the movable plates 65 and avoid loosening during the installation of the extruded polystyrene board 3.

[0050] Bind the concrete crack-resistant steel bars on the placed extruded polystyrene board. Drive the slider 67 to slide up and down through the cylinder, thereby adjusting the height of the support roller 71. Then drive the second cylinder 68 to push the support roller 71 to move and adjust the distance between the two support rollers 71 to fix concrete crack-resistant steel bars of different widths and prevent the concrete crack-resistant steel bars from shaking. At the same time, the two support rollers 71 are symmetrically arranged and the two support rollers 71 are parallelly arranged with a certain height difference, so that the fixing range is wider. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the first concrete counterweight block 4.

[0051] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above content is only an example and illustration of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A cast-in-place concrete counter-pressure tower crane foundation device, characterized in that, It includes a concrete foundation slab (1), a tower crane base (2), an extruded polystyrene board (3), a first concrete counterweight block (4), a second concrete counterweight block (5) and a clamping mechanism (6). The tower crane base (2) is installed on the top of the concrete foundation slab (1). The extruded polystyrene board (3) is fixedly connected to the top of the tower crane base (2) through the clamping mechanism (6). The first concrete counterweight block (4) is cast on the extruded polystyrene board (3), and the second concrete counterweight block (5) is cast on the first concrete counterweight block (4). The clamping mechanism (6) includes mounting plates (61). There are four mounting plates (61), and the four mounting plates (61) are installed in a quadrilateral shape on the top of the tower crane base (2). One side of the bottom end of the mounting plate (61) is fixedly installed with a first cylinder (66). The piston rod of the first cylinder (66) penetrates through the mounting plate (61) and is connected to a movable block (62). A slide rail (63) is horizontally installed on the other side of the movable block (62), and a movable plate (65) is slidably connected inside the slide rail (63). The clamping process of the clamping mechanism (6) for the extruded polystyrene board (3) includes: Place the extruded polystyrene board (3) between the four movable plates (65), drive the first cylinder (66), and push the movable plate (65) to move until the four movable plates (65) are all fixed to the periphery of the extruded polystyrene board (3).

2. The cast-in-place concrete counter-pressure tower crane foundation device according to claim 1, characterized in that, Sliders (67) are slidably connected to both sides of the mounting plate (61). The sliders (67) are located above the movable plate (65). A connecting rod (70) is fixedly installed between the two sliders (67). A lifting block (72) is fixedly installed on one side of the connecting rod (70). A second cylinder (68) is fixedly installed on one side of the lifting block (72). The piston rod of the second cylinder (68) penetrates through the lifting block (72) and is connected to a support roller (71). Guide rods (69) are also fixedly installed on both sides of the support roller (71), and the other ends of the guide rods (69) penetrate through the lifting block (72). The fixing process of the support roller (71) for the concrete crack-resistant steel bars during operation includes: Drive the slider (67) to slide up and down to adjust the height of the support roller (71), drive the second cylinder (68), push the support roller (71) to move, adjust the distance between the two support rollers (71), and fix the concrete crack-resistant steel bars.

3. A cast-in-place concrete counter-pressure tower crane foundation device according to claim 2, characterized in that, The four movable plates (65) are arranged in a quadrilateral shape.

4. A cast-in-place concrete counter-pressure tower crane foundation device according to claim 3, characterized in that, Limit holes (64) are evenly formed in the movable plate (65), and a jack is formed in the movable block (62). A limit rod is inserted into the limit holes (64) and the jack.

5. The cast-in-place concrete counter-pressure tower crane foundation device according to claim 4, characterized in that, The second concrete counterweight block (5) is composed of trapezoidal blocks. The lower base length of the trapezoid is 5620 mm, the upper base length is 2820 mm, and the height is 1700 mm.

6. The cast-in-place concrete counter-pressure tower crane foundation device according to claim 5, characterized in that, The working steps of the clamping mechanism (6) are: Step 1: Place the extruded board (3) between the four movable boards (65), then drive the first cylinder (66) to push the movable boards (65) to move until the four movable boards (65) are all fixed to the periphery of the extruded board (3). Finally, insert the limiting rod into the limiting hole (64) and the jacking hole to fix the movable board (65), and finally install the extruded board (3) on the tower crane base (2). Step 2: Drive the slider (67) to slide up and down, thereby adjusting the height of the support roller (71). Then drive the second cylinder (68) to push the support roller (71) to move and adjust the distance between the two support rollers (71) to fix the concrete crack-resistant steel bars.

7. The construction method of a cast-in-place concrete counter-pressure type tower crane foundation device according to claim 6, characterized in that, The method includes the following steps: Step 1: Install the tower crane base (2) on the concrete foundation slab (1). Step 2: Place a layer of extruded board (3) between the tower crane base (2) and the first concrete counterweight block (4). First, place the extruded board (3) between the four movable boards (65), then drive the first cylinder (66) to push the movable boards (65) to move until the four movable boards (65) are all fixed to the periphery of the extruded board (3). Finally, insert the limiting rod into the limiting hole (64) and the jacking hole to fix the movable board (65), and finally install the extruded board (3) on the tower crane base (2). Step 3: Bind the concrete crack-resistant steel bars on the placed extruded board. After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the first concrete counterweight block (4). Step 4: Bind the concrete crack-resistant steel bars on the poured first concrete counterweight block (4). After the steel bar binding is completed, close the formwork and pour C25 concrete to complete the production of the second concrete counterweight block (5).

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