High-supporting-performance raft foundation side formwork structure and construction method thereof

Abstract

The invention discloses a high-supporting-performance raft foundation side die structure and a construction method thereof, and relates to the technical field of raft side supporting structures.According to the high-supporting-performance raft foundation side die structure and the construction method thereof, the width of multiple layers of brick forming dies is reduced layer by layer from bottom to top, so that the top of each layer of brick forming die is exposed, and side face extrusion force borne by the side die structure is dispersed to the tops of the brick forming dies; through cooperation of connection of constructional columns and upper, middle and lower layers of ring beams and connection of pre-buried steel plates to raft foundation steel bars, a cantilever stress system of the side formwork structure can be optimized, the bearing capacity of the side formwork structure can be improved, the probability of collapse of the side formwork structure is reduced, meanwhile, the thickness of the multiple layers of brick moulding beds is increased layer by layer from bottom to top, and the construction cost is reduced. The overall width of the side formwork structure is reduced, the using amount of bricks can be reduced, the digging amount and the backfilling amount of a pit-in-pit can be reduced, under mutual cooperation, the construction cost is reduced to a certain degree, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of raft slab side support structures, and in particular to a high-support raft slab foundation side formwork structure and a construction method thereof. Background Art

[0002] In foundation pit construction projects for high-rise buildings such as wind farms and high-rise buildings, in order to bury the raft foundation of the main building, a "pit within a pit" is usually formed by independently digging deeper inside the large foundation pit. The solid construction of the raft foundation is inseparable from the support of the inner formwork structure of the "pit within a pit".

[0003] In the prior art, the side formwork structure used to support the raft slab in the "pit in the pit" mostly adopts the following two forms. The first mode is to directly use the supporting structure as the side formwork for support, such as the row wall, soil nail wall and other structures. Although this type of support is convenient to construct, due to the uneven surface of this type of support body, the quality of constructing external waterproofing thereon is difficult to be effectively guaranteed, and there is a large risk of system leakage. The second mode is to construct and stack brick formwork in the pit to form a base layer as the external waterproofing and a side formwork structure of the raft foundation. The side formwork structure constructed in this way has a flat surface, which is conducive to stable waterproofing construction. However, when the depth of the "pit in the pit" is too large, due to the excessive amount of backfill soil above, the side formwork structure formed by conventional brick formwork stacking is difficult to withstand the lateral pressure exerted by the excessive backfill soil, and is prone to collapse, affecting the construction progress and construction safety. This makes it difficult for the brick wall composed of conventional brick formwork stacking to meet the current demand for deeper and deeper raft foundations.

[0004] Therefore, a high-support raft foundation side formwork structure and a construction method thereof are proposed to solve some problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art in that the side formwork structure for raft foundation is prone to collapse due to insufficient lateral support force when built too deep, thereby affecting construction safety and construction progress, and to propose a high-support raft foundation side formwork structure and its construction method.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: A high-support raft foundation side formwork structure includes a brick formwork. The multi-layer brick formwork is formed by stacking bricks from bottom to top. The main body width of the multi-layer brick formwork decreases layer by layer from bottom to top according to the module. The thickness of the multi-layer brick formwork decreases layer by layer from top to bottom. The side of the multi-layer brick formwork facing the fertilizer trough is arranged in a stepped shape, and the side of the multi-layer brick formwork away from the fertilizer trough is arranged in a flat surface. Multiple structural columns are arranged along the length direction of the brick formwork. Ring beams are arranged at the bottom, middle and top of the multi-layer brick formwork, and the steel skeleton in the ring beam is firmly connected to the steel skeleton in the structural column. The flat surface of the multi-layer brick formwork is coated with a cement coating by brushing.

[0007] Preferably, steel plates are embedded in the brick formwork and each ring beam, which are connected to the raft foundation reinforcement structure and steel structure through the steel plates. Waterstops are provided at the positions of the embedded steel plates in the brick formwork and each ring beam.

[0008] Preferably, drain pipes and downcomers are pre-buried at each ring beam.

[0009] Preferably, a construction method of a high-support raft foundation side formwork structure comprises the following steps: S1. Level the "pit within pit" at the construction site; S2. Construction of cushion layer at the bottom of the “pit within a pit”; S3. Lay out the brick mold on the cushion layer, and simultaneously make reservations for drain pipes and downpipes, and then conduct trial placement of brick samples; S4. Build the steel skeleton inside the structural columns and ring beams; S5. Stacking brick formwork layer by layer from bottom to top, and backfilling the fertilizer trough layer by layer according to the progress of stacking the brick formwork layer by layer, and pre-embedding steel plates during the brick formwork stacking process; S6. During the brick formwork stacking process, the structural columns and the bottom, middle and upper ring beams are cast and formed; S7. After the side formwork structure is formed, the side of the side formwork structure away from the fertilizer tank is plastered to form a cement coating and a waterproof protective layer is laid; S8. Erect the raft foundation support and tie the steel bars. After pouring the raft concrete, maintain and shape it.

[0010] Preferably, a bricklaying device for the construction of a high-support raft foundation side formwork structure is provided, the bricklaying device being composed of a combination of multiple structural members, the structural members including two supporting frames arranged side by side, an upwardly raised gripping rod being fixedly connected to the middle position of the top of the two supporting frames, two vertically arranged clamping arms being fixed under each supporting frame, and a locking mechanism being provided at the lower end of the clamping arm.

[0011] Preferably, the locking mechanism includes a cylinder rotatably installed in the lower end of the clamping arm, and a horizontally arranged pin is fixed on one side of the cylinder close to the center position of the structural member, a torsion spring is installed between the cylinder and the clamping arm, a limiting groove is provided on the cylindrical surface of the cylinder, a first connecting rod is slidably installed in the clamping arm, and a pin vertically inserted in the limiting groove is fixed at the lower end of the first connecting rod.

[0012] Preferably, a second connecting rod is movably installed in the supporting frame, and the second connecting rod is fixedly connected to the two corresponding first connecting rods below, and a shifting rod is fixedly connected between the two second connecting rods in the two supporting frames.

[0013] Preferably, the shifting rod is located directly below the gripping rod, and a spring elastically supported above the second connecting rod is fixedly installed in the supporting frame.

[0014] Preferably, a first joint is fixed to one end of the second connecting rod, and the internal size of the first joint is adapted to the outer size of the second connecting rod; a second joint is fixed to one end of the supporting frame, and the internal size of the second joint is adapted to the outer size of the supporting frame; a bolt is threaded on the second joint, and an auxiliary support rod is fixed to the lower end of the end wall of the two clamping arms on the same side that are away from each other.

[0015] Preferably, it also includes a pad rail, the width of which is set to 2 / 3 of the width of the brick, and a plurality of evenly distributed side support blocks are intermittently fixed on both sides of the top of the pad rail.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting the width of the multi-layer brick formwork to be reduced layer by layer from bottom to top, a portion of the top of the brick formwork is exposed to support the backfill soil, and the lateral extrusion force on the side formwork structure is dispersed to the top of the brick formwork. In conjunction with the connection of the structural columns and the upper, middle and lower ring beams along the length direction, and the pre-buried steel plates for connecting the raft foundation reinforcement, the cantilever force system of the side formwork structure is optimized, which can effectively improve the bearing capacity of the side formwork structure and reduce the probability of collapse of the side formwork structure. At the same time, by setting the thickness of the multi-layer brick formwork to be increased layer by layer from bottom to top, the overall width of the side formwork structure is reduced, which can not only reduce the amount of bricks used, but also reduce the amount of excavation and backfill of the pit within the pit. With these cooperation, the construction cost is reduced to a certain extent and it is conducive to improving construction efficiency. 2. In the present invention, a stacking device is formed by adopting a plurality of structural parts in a flexible assembly mode, which can assist the construction during the brick formwork stacking process. With the cooperation of the workers inside and outside the pit, multiple bricks can be grabbed at the same time for unified bricklaying construction. With the help of the flexible deflection of the pin in the locking mechanism and the restriction of the deflection of the pin by inserting the pin into the limit groove, the workers can flexibly realize the efficient loading and unified release of multiple bricks. With the cooperation of each other, the construction efficiency of the workers in the construction of the inner side formwork structure of the narrow pit is improved to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A three-dimensional diagram of the side mold structure of the present invention in a pit within a pit; Figure 2 For the present invention Figure 1 Front cross-section of the middle structure; Figure 3 A perspective view of the side mold structure of the present invention; Figure 4 This is an exploded view of the side mold structure of the present invention; Figure 5 A schematic diagram of the step-by-step formation of the side mold structure of the present invention; Figure 6 This is a construction flow chart of the side formwork structure of the present invention; Figure 7 is a perspective view of the bricklaying device of the present invention; Figure 8 A perspective view of a structural member of the present invention; Figure 9 This is an exploded view of the locking mechanism of the present invention; Figure 10 A top view of the bricklaying device of the present invention; Figure 11 For the present invention Figure 10 Cross-sectional view at AA in the middle; Figure 12 For the present invention Figure 10 Cross-sectional view at the middle BB.

[0018] Serial number in the picture: 1. Brick formwork; 101. Structural column; 102. Ring beam; 103. Cement coating; 2. Structural parts; 201. Carrying frame; 202. Grip; 203. Clamping arm; 204. Cylinder; 205. Bayonet; 206. Torsion spring; 207. Limiting slot; 208. First connecting rod; 209. Latch; 210. Second connecting rod; 211. Push rod; 212. Spring; 213. First joint; 214. Second joint; 215. Bolt; 216. Auxiliary support rod; 3. Rail pad; 301. Side support block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1: This example provides a high-support raft foundation side form structure, see Figure 1 - Figure 5 Specifically, it includes a brick mold 1, which is formed by stacking bricks from bottom to top. The main width of the multi-layer brick mold 1 is reduced layer by layer from bottom to top according to the module, and the thickness of the multi-layer brick mold 1 is reduced layer by layer from top to bottom. The side of the multi-layer brick mold 1 facing the fertilizer trough is set to a stepped shape, and the side of the multi-layer brick mold 1 away from the fertilizer trough is set to a flat surface. A plurality of structural columns 101 are provided along the length direction of the brick mold 1, and ring beams 102 are provided at the bottom, middle and top of the multi-layer brick mold 1, and the steel skeleton in the ring beam 102 is firmly connected to the steel skeleton in the structural column 101. The flat surface of the multi-layer brick mold 1 is formed by brushing a cement coating 103.

[0021] After the side formwork structure is completed, the main width of the multi-layer brick formwork 1 is gradually reduced from bottom to top, and the width of each layer of brick formwork 1 is only 2 / 3 of the width of the brick formwork 1 of the next layer. This makes the side of the side formwork structure in the fertilizer trough appear stepped after it is formed. Except for the topmost brick formwork 1, a part of the top of the remaining brick formworks 1 below is directly exposed in the fertilizer trough. When the fertilizer trough is backfilled, the backfill soil will not only squeeze the side of the brick formwork 1 facing the fertilizer trough, but also fall on the exposed part of the top of the multi-layer brick formwork 1 below. Compared with the side formwork structure with both sides erected The side formwork structure in the present application can support the backfill soil in the fertilizer trough with the help of the top of the multi-layer brick formwork 1 below, so that the backfill soil exerts an extrusion force from top to bottom on the top of the multi-layer brick formwork 1 below. It can not only reduce the pushing force of the side of the multi-layer brick formwork 1 by the backfill soil, but also ensure the stability of the position of the multi-layer brick formwork 1 below with the help of the extrusion force from top to bottom, and reduce the probability of the brick formwork 1 shifting into the foundation pit. Combined with the connection between the structural column 101 and the upper, middle and lower three-layer ring beams 102 along the length direction, the cantilever force system of the side formwork structure is optimized, which can effectively improve the bearing capacity of the side formwork structure.

[0022] At the same time, by setting the main body thickness of the multi-layer brick formwork 1 in the side formwork structure to increase layer by layer from bottom to top, this ensures that the multi-layer brick formwork 1 in the side formwork structure forms a stable stepped shape in the fertilizer trough during the construction of the side formwork structure, and also makes the thickness of the narrow brick formwork 1 in the upper layer of the side formwork structure high, which is beneficial to greatly reduce the amount of bricks used in the construction of the side formwork structure. Moreover, since the main body thickness of the multi-layer brick formwork 1 increases layer by layer from bottom to top, when the main body width of the multi-layer brick formwork 1 is indented layer by layer at the same distance from bottom to top, the main body width of the lowest layer of brick formwork 1 can be effectively reduced, which is beneficial to reduce the amount of excavation of the pit in the pit and the amount of backfilling of the fertilizer trough. With mutual cooperation, the construction cost is reduced to a certain extent and it is beneficial to improve construction efficiency.

[0023] Steel plates are embedded in the brick formwork 1 and each ring beam 102, which are connected to the raft foundation steel structure and steel structure through the steel plates. Waterstops are provided at the positions of the embedded steel plates in the brick formwork 1 and each ring beam 102. After the side formwork structure is completed, since steel plates are embedded in the brick formwork 1 and the ring beam 102 during the construction process, these steel plates are firmly connected to the brick formwork 1 and the ring beam 102, forming a whole with the formed side formwork structure, and can form a more stable connection with the raft foundation steel structure and steel structure in the later stage, which is beneficial to improving the firmness and stability of the raft after casting and forming. At the same time, by embedding waterstops or waterstop rings at the connection positions of two adjacent components and performing waterproof pretreatment, the waterproof performance of the side formwork structure after construction is effectively improved.

[0024] Drain pipes and downpipes are pre-buried at each ring beam 102. This allows the water flow to be guided by the pre-buried drain pipes and downpipes at the ring beam 102 after the side formwork structure is constructed, thereby lowering the water level in the fertilizer trough backfill soil and draining the accumulated water in time, thereby preventing the water level in the backfill soil from being too high and causing adverse effects on the side formwork structure, and further enhancing the firmness and stability of the side formwork structure.

[0025] Example 2: Based on Example 1, this example also includes a construction method for a high-support raft foundation side formwork structure, see Figure 1 - Figure 6 Specifically, the construction method is applicable to a high-support raft foundation side formwork structure, and the construction method includes the following steps: S1. Level the "pit within pit" at the construction site; S2. Construction of cushion layer at the bottom of the “pit within a pit”; S3. Lay out the brick mold on the cushion layer, and simultaneously make reservations for drain pipes and downpipes, and then conduct trial placement of brick samples; S4, build the steel skeleton in the structural column 101 and the ring beam 102; S5, stacking the brick formwork 1 layer by layer from bottom to top, and backfilling the fertilizer trough layer by layer according to the progress of stacking the brick formwork 1 layer by layer, and pre-embedding the steel plate during the stacking process of the brick formwork 1; S6, during the brick formwork 1 layer by layer, the structural columns 101 and the bottom, middle and upper ring beams 102 are cast and formed; S7. After the side formwork structure is formed, a plastering operation is performed on the side of the side formwork structure away from the fertilizer tank to form a cement coating 103 and a waterproof protective layer is laid; S8. Erect the raft foundation support and tie the steel bars. After pouring the raft concrete, maintain and shape it.

[0026] During the construction of this solution, the steel plates are pre-buried in advance during the construction of the side formwork structure. In the later connection process with the raft foundation steel structure support, the method and structural form are optimized, so that the cross beams and connecting beams in the steel structure in the raft foundation are placed on the brick formwork 1 and the ring beam 102, providing a favorable lateral constraint for the multi-layer brick formwork 1 used for retaining soil, and additional waterproofing treatment is performed on the connection nodes, thereby effectively improving the cantilever force system of the side formwork structure, which is beneficial to improving the bearing capacity of the side formwork structure. At the same time, during the construction process, the masonry operation is carried out in the form of "foundation beam + masonry rotation + ring beam". As the width of the brick formwork 1 gradually decreases from bottom to top according to the module, connecting steel plates and embedded components are used to connect each layer of brick formwork 1 to the main steel structure of the raft slab, thereby ensuring the integrity of the side formwork structure and the raft slab body, improving the lateral support force of the side formwork structure, and greatly reducing the amount of masonry during the masonry operation of each layer of brick formwork 1, effectively reducing the overall thickness of the side formwork structure, thereby reducing the excavation amount and backfill amount of the "pit in the pit", and by lowering the water level in the backfill soil, reducing the lateral pressure of the backfill soil on the side formwork structure, thereby increasing safety for construction and helping to achieve the goal of reducing costs and increasing efficiency.

[0027] Example 3: Based on Examples 1 and 2, this example also includes a bricklaying device for the construction of a high-support raft foundation side formwork structure, see Figure 7 - Figure 12Specifically, the bricklaying device is suitable for the construction method of the high-support raft foundation side formwork structure. The bricklaying device is composed of a combination of multiple structural members 2, and the structural member 2 includes two supporting frames 201 arranged side by side. The middle position of the top of the two supporting frames 201 is fixedly connected with an upwardly raised gripping rod 202. Two vertically arranged clamping arms 203 are fixed under each supporting frame 201, and the lower end of the clamping arm 203 is provided with a locking mechanism. The locking mechanism includes a column 204 rotatably installed in the lower end of the clamping arm 203, and a horizontally arranged bayonet 205 is fixed on the side of the column 204 close to the center position of the structural member 2, and a torsion spring 206 is installed between the column 204 and the clamping arm 203. A limiting groove 207 is provided on the cylindrical surface of the column 204, and a first connecting rod 208 is slidably installed in the clamping arm 203, and the lower end of the first connecting rod 208 is fixed with a pin 209 vertically inserted in the limiting groove 207.

[0028] During the construction of the side formwork structure in the "pit within a pit", the space in the "pit within a pit" is usually small, and some narrow pit spaces can even only accommodate one worker. If more workers are in the "pit within a pit" to construct at the same time, due to the limited construction space, they will not only interfere with each other, resulting in affected construction progress, but also prone to collisions during construction, posing certain safety hazards. If only a small number of people are set up to construct in the pit, the construction progress will also be affected due to the low efficiency of single-person construction. In order to avoid the above situation, the workers can use the bricklaying device to stack the brick formwork 1.

[0029] During the process of stacking the brick formwork 1, with the assistance of other workers, by using this device for construction, a single worker can grab multiple bricks at the same time to perform bricklaying operations. During construction, the bricklaying worker is in the pit, and the assisting worker is outside the pit. The worker selects a suitable number of structural members 2 according to the bricklaying needs and usage habits to assemble a bricklaying device that meets their own construction needs. A single structural member 2 can grab one brick. After three structural members 2 are assembled and connected, three bricks can be grabbed at the same time.

[0030] When the bricklaying workers are piling up the brick formwork 1 in the pit, the bricks needed are neatly arranged outside the pit in advance, and the assistants outside the pit align the bricklaying device above the brick and manipulate the bricklaying device from top to bottom to clamp the outside of the brick. During the downward movement of the bricklaying device, the latch 205 will first contact the top of the brick. Under the extrusion formed by the relative movement of the bricklaying device and the brick, the latch 205 is driven to overcome the elastic connection of the torsion spring 206 and deflect upward. Under the continued relative movement, the latch 205 is squeezed and accommodated in the lower end of the clamping arm 203. When the lower end of the clamping arm 203 drives the latch 205 to move to the bottom of the brick, the latch 205 is 5 is no longer squeezed by the brick. Under the elastic rebound of the torsion spring 206, the latch 205 returns to the horizontal state and is at the bottom of the brick, thereby lifting the brick. Since the limiting groove 207 is provided on the cylindrical surface of the cylinder 204, the rotation range of the cylinder 204 is limited by the insertion of the latch 209 into the limiting groove 207. The corresponding angle covered by the limiting groove 207 is 90°. Therefore, when the latch 209 is inserted into the limiting groove 207, the connection between the cylinder 204 and the latch 205 can only rotate upward 90°. The horizontal latch 205 cannot rotate downward, thereby stably lifting the brick.

[0031] The assistant holds the handle 202 to lift up a plurality of bricks and hands them to the bricklayer. The bricklayer lifts up a plurality of neatly arranged bricks through the bricklaying device, moves downward and presses them on the cement applied at the laying position to perform the brick forming mold 1 stacking operation. After the bricks and cement are in contact with each other, the bricklayer controls the first connecting rod 208 to drive the latch 209 to lift up and withdraw from the limit groove 207. In this state, the downward rotation of the column 204 is no longer restricted. Affected by the gravity of the bricks, when the bricklayer holds the handle 202 to lift the bricklaying device, the latch 205 can move downward. Swinging separates the bricklaying device from the bricks, and the bricklayer hands the bricklaying device back to the auxiliary personnel outside the pit, and re-performs the brick filling operation. The personnel in the pit perform bricklaying operations, and the personnel outside the pit perform brick filling operations. When the personnel in the pit lays bricks, the personnel outside the pit places the bricks according to construction requirements. When the personnel outside the pit fills bricks through the bricklaying device, the personnel in the pit apply cement. The above operations are repeated in an orderly manner, which can greatly increase the number of bricks stacked per unit time, and will not be affected by the narrow space in the pit, which is conducive to the efficient and stable stacking construction of the brick formwork 1.

[0032] In the specific implementation process, Figure 8 、 Figure 11 and Figure 12As shown, a second connecting rod 210 is movably installed in the carrier 201, and the second connecting rod 210 is fixedly connected to the two corresponding first connecting rods 208 below. A driving rod 211 is fixedly connected between the two second connecting rods 210 in the two carriers 201. The driving rod 211 is located just below the gripping rod 202. A spring 212 elastically supported above the second connecting rod 210 is fixedly installed in the carrier 201. During the construction process, when the bricklayer needs to release the bricks, the bricklayer holds the gripping rod 202 to pick up the device. Since the driving rod 211 is set below the gripping rod 202, the bricklayer only needs to hook the driving rod 211 upward with his finger to control the first connecting rod 208 to drive the latch 209 to move up and self-limit. The lock pin 205 is released from the positioning groove 207, and the brick is lifted by the locking pin 205. The operation is convenient. By elastically supporting the spring 212 on the top of the second connecting rod 210, when the bricklayer releases the hook of the detent rod 211, the elastic rebound of the torsion spring 206 and the elastic support of the spring 212 can be used to restore the locking pin 205 to a horizontal state. The pin 209 can then be reinserted into the limiting groove 207 to limit the position of the locking pin 205, which is conducive to ensuring the stable and repetitive use of the bricklaying device. The main body of the bricklaying device is made of engineering plastics or lightweight aluminum alloy materials. While ensuring the structural strength, the overall weight can be effectively reduced, which is convenient for ensuring the portability of the staff during long-term use.

[0033] In the specific implementation process, Figure 7 、 Figure 8 and Figure 12As shown, a first joint 213 is fixed to one end of the second connecting rod 210, and the internal size of the first joint 213 is adapted to the outer size of the second connecting rod 210, and a second joint 214 is fixed to one end of the carrier 201, and the internal size of the second joint 214 is adapted to the outer size of the carrier 201, and a bolt 215 is screwed on the second joint 214, and an auxiliary support rod 216 is fixed to the lower end of the end wall of the two clamping arms 203 on the same side that are away from each other. When the device is used, the staff selects an appropriate number of structural members 2 according to their own needs and assembles them together to form a bricklaying device. During the assembly process, the end of the carrier 201 in one structural member 2 is inserted into the second joint 214 in the other structural member 2, and by rotating the bolt 2 15 is pressed tightly to make a firm connection, and the assembly operation is convenient and efficient, which can effectively improve the flexibility of the bricklaying device during actual use. After multiple structural members 2 are assembled together, the adjacent auxiliary support rods 216 on the two adjacent structural members 2 will abut against each other to form an auxiliary support, which is beneficial to improving the structural stability of the bricklaying device after the multiple structural members 2 are assembled. In addition, in the bricklaying device, the end of the second connecting rod 210 in one structural member 2 is inserted into the first joint 213 in another structural member 2. The multiple second connecting rods 210 in the bricklaying device are connected in a unified manner. When it is necessary to release the bricks, the staff only needs to hook a lever 211 to release the restrictions on all the pins 205, and complete the unified release of many bricks. The operation is convenient and efficient.

[0034] In the specific implementation process, Figure 7 、 Figure 11 and Figure 12 As shown, a bricklaying device for the construction of a high-support raft foundation side formwork structure also includes a pad rail 3, the width of the pad rail 3 is set to 2 / 3 of the brick width, and a number of evenly distributed side support blocks 301 are intermittently fixed on both sides of the top of the pad rail 3. When the device is in use, the pad rail 3 is used to lift the brick, which can effectively increase the ground clearance of the bottom of the brick, so that when the bricklaying device moves downward relative to the brick, the pin 205 can stably pass over the bottom of the brick. At the same time, by arranging a number of evenly distributed side support blocks 301 on both sides of the top of the pad rail 3, while ensuring stable support for the bottom of the brick, it will not interfere with the up and down movement of the bricklaying device relative to the brick, which is beneficial to ensuring the stability of the bricklaying device when grabbing and loading the bricks.

[0035] Specifically, the working principle and operation method of the present invention are as follows: When stacking the side formwork structure, the main width of the multi-layer brick formwork 1 decreases layer by layer from bottom to top, and the main thickness of the multi-layer brick formwork 1 increases layer by layer from bottom to top, which can disperse the extrusion pressure exerted by the backfill soil to the exposed position on the top of each layer of brick formwork 1. Combined with the setting of the structural column 101 and the upper, middle and lower three-layer ring beams 102, as well as the pre-buried connecting steel plates, the cantilever force system of the side formwork structure can be optimized, and the bearing capacity of the side formwork structure can be effectively improved. By guiding the water flow through the drainage pipes and downcomers pre-buried at the ring beam 102, the water level in the backfill soil of the fertilizer trough can be lowered, and the accumulated water can be discharged in time. When constructing the brick formwork 1, the staff inside and outside the pit cooperate with each other, and use the bricklaying device to grab multiple bricks at the same time to carry out the stacking construction of the brick formwork 1, which can effectively improve the construction efficiency.

[0036] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-support raft foundation side formwork structure, comprising a brick formwork (1), characterized in that: The multi-layer brick formwork (1) is formed by stacking bricks from bottom to top. The main body width of the multi-layer brick formwork (1) is reduced layer by layer from bottom to top according to the module number. The thickness of the multi-layer brick formwork (1) is reduced layer by layer from top to bottom. The side of the multi-layer brick formwork (1) facing the fertilizer trough is set to a stepped shape. The side of the multi-layer brick formwork (1) away from the fertilizer trough is set to a flat surface. The brick formwork (1) is provided with multiple structural columns (101) along the length direction. The bottom, middle and upper parts of the multi-layer brick formwork (1) are all provided with ring beams (102), and the steel skeleton in the ring beam (102) is firmly connected to the steel skeleton in the structural column (101). The flat surface of the multi-layer brick formwork (1) is formed with a cement coating (103) by brushing.

2. The high-support raft foundation side formwork structure according to claim 1, characterized in that: Steel plates are embedded in the brick formwork (1) and each ring beam (102), and are connected to the raft foundation reinforcement structure and the section steel structure via the steel plates. Waterstops are provided at the locations of the embedded steel plates in the brick formwork (1) and each ring beam (102).

3. The high-support raft foundation side formwork structure according to claim 2, characterized in that: Drain pipes and downspout pipes are pre-buried at the ring beam (102) of each layer.

4. A construction method for a high-support raft foundation side formwork structure, characterized in that: The construction method is applicable to the high-support raft foundation side formwork structure according to any one of claims 1 to 3, and the construction method comprises the following steps: S1. Level the "pit within pit" at the construction site; S2. Carry out cushion construction at the bottom of the "pit within a pit"; S3. Lay out the brick mold on the cushion layer, and simultaneously make reservations for drain pipes and downpipes, and then conduct trial placement of brick samples; S4, constructing a steel skeleton in the structural column (101) and the ring beam (102); S5, stacking the brick formwork (1) layer by layer from bottom to top, and backfilling the fertilizer trough layer by layer according to the progress of stacking the brick formwork (1), and pre-embedding the steel plate during the stacking process of the brick formwork (1); S6, during the brick formwork (1) layer by layer stacking process, the structural column (101) and the bottom, middle and upper ring beams (102) are cast and formed; S7, after the side formwork structure is formed, a plastering operation is performed on the side of the side formwork structure away from the fertilizer tank to form a cement coating (103), and a waterproof protective layer is laid; S8. Erect the raft foundation support and tie the steel bars. After pouring the raft concrete, maintain and shape it.

5. A bricklaying device for the construction of a high-support raft foundation side formwork structure, characterized by: The bricklaying device is suitable for the construction method of the high-support raft foundation side formwork structure as claimed in claim 4, and the bricklaying device is composed of a plurality of structural members (2), and the structural members (2) include two supporting frames (201) arranged side by side, and the top middle positions of the two supporting frames (201) are fixedly connected with an upwardly raised gripping rod (202), and two vertically arranged clamping arms (203) are fixed below each of the supporting frames (201), and the lower ends of the clamping arms (203) are provided with a locking mechanism.

6. A bricklaying device for construction of a high-support raft foundation side formwork structure according to claim 5, characterized in that: The locking mechanism includes a cylinder (204) rotatably mounted in the lower end of the clamping arm (203), and a horizontally arranged latch (205) is fixed on one side of the cylinder (204) close to the center position of the structural member (2), a torsion spring (206) is installed between the cylinder (204) and the clamping arm (203), a limiting groove (207) is provided on the cylindrical surface of the cylinder (204), a first connecting rod (208) is slidably mounted in the clamping arm (203), and a latch (209) vertically inserted into the limiting groove (207) is fixed at the lower end of the first connecting rod (208).

7. A bricklaying device for construction of a high-support raft foundation side formwork structure according to claim 6, characterized in that: A second connecting rod (210) is movably installed in the carrier (201), and the second connecting rod (210) is fixedly connected to two corresponding first connecting rods (208) below. A shifting rod (211) is fixedly connected between the two second connecting rods (210) in the two carriers (201).

8. A bricklaying device for construction of a high-support raft foundation side formwork structure according to claim 7, characterized in that: The shifting rod (211) is located directly below the gripping rod (202), and a spring (212) elastically supported above the second connecting rod (210) is fixedly installed in the supporting frame (201).

9. The bricklaying device for construction of a high-support raft foundation side formwork structure according to claim 7, characterized in that: A first joint (213) is fixed to one end of the second connecting rod (210), and the inner dimension of the first joint (213) is adapted to the outer dimension of the second connecting rod (210); a second joint (214) is fixed to one end of the supporting frame (201), and the inner dimension of the second joint (214) is adapted to the outer dimension of the supporting frame (201); a bolt (215) is screwed onto the second joint (214); and an auxiliary support rod (216) is fixed to the lower ends of the end walls of the two clamping arms (203) on the same side that are away from each other.

10. The bricklaying device for construction of a high-support raft foundation side formwork structure according to claim 5, characterized in that: It also includes a pad rail (3), the width of which is set to 2 / 3 of the width of the brick, and a plurality of evenly distributed side support blocks (301) are intermittently fixed on both sides of the top of the pad rail (3).

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