Raft plate descending area single-side formwork supporting system

Abstract

The utility model discloses a single-side formwork supporting system for a raft descending area. The single-side formwork supporting system comprises a formwork, a main back ridge arranged on the outer side of the formwork, a secondary back ridge installed on the main back ridge and abutting against the formwork, a cross beam arranged on a bottom plate structure and connected with the main back ridge, and an inclined strut connected between the cross beam and the main back ridge. The cross beam is divided into a plurality of sections, and every two adjacent sections of cross beams are connected through a core belt; and embedded screws for fixing the cross beams, the main back ridges and the bottom plate structure are embedded in the bottom plate structure. The method can effectively solve the problem of conflict between the single-side formwork supporting frame body in the raft descending area and the steel bars during laying, the original main body structure steel bars do not need to be transformed and damaged, the mechanical property and the structural strength of a formwork supporting system can be guaranteed, the construction period is shortened, and the construction cost is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of formwork engineering, and in particular to a single-sided formwork support system for the raft slab drop area. Background Technology

[0002] Single-sided formwork technology has been widely used in the construction of underground concrete structures. It has the advantages of reasonable stress distribution and good pouring effect. However, the conventional triangular frame single-sided formwork system has a double channel steel support beam as a whole and often uses pre-embedded bolts for anchoring. In areas with dense reinforcement, conflicts often occur in the spatial position of the structure. Using methods such as cutting and bending will not only damage the main structure, but also increase the amount of work and prolong the construction time. Utility Model Content

[0003] This utility model provides a single-sided formwork system for the raft foundation drop area, which does not require modification or damage to the original main structural steel reinforcement and can ensure the mechanical properties and structural strength of the formwork system.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a single-sided formwork support system for a raft slab drop area, including a template, a main back rib set on the outside of the template, a secondary back rib installed on the main back rib and abutting against the template, a crossbeam set on the base plate structure and connected to the main back rib, and a diagonal brace connecting the crossbeam and the main back rib.

[0006] The crossbeam is divided into multiple segments, and adjacent crossbeam segments are connected by a core strip.

[0007] The base plate structure has pre-embedded bolts that fix the crossbeams and main back ribs to the base plate structure.

[0008] This utility model provides a single-sided formwork system for the raft slab drop area. Furthermore, the segmented section of the crossbeam is located at the point where the crossbeam interferes with the reserved reinforcing steel bars of the bottom slab structure.

[0009] This utility model discloses a single-sided formwork support system for the raft slab drop area. Furthermore, the crossbeam is made of double-channel steel, and the end of the core strip is inserted between the double-channel steel and fastened with bolts.

[0010] This utility model discloses a single-sided formwork support system for the raft slab drop area. Furthermore, the main back rib is made of double-channel steel, and one end of the diagonal brace is connected to the main back rib by bolts, while the other end is connected to the crossbeam by bolts.

[0011] This utility model discloses a single-sided formwork support system for a raft slab drop area. Furthermore, a connecting triangular plate is provided at the gap between the crossbeam and the channel steel of the main back rib. One end of the connecting triangular plate is connected to the crossbeam, and the other end is connected to the main back rib.

[0012] This utility model discloses a single-sided formwork support system for a raft slab drop area. Furthermore, the connecting triangular plate has an inclined plane, and a clamping beam is supported on the inclined plane. The pre-embedded screw passes through the clamping beam and is locked by a nut.

[0013] This utility model provides a single-sided formwork support system for the raft slab lowering area. Furthermore, one end of the pre-embedded screw anchored into the base plate structure is provided with a mechanical anchor plate.

[0014] This utility model provides a single-sided formwork support system for the raft slab lowering area. Furthermore, the main back rib and the secondary back rib are connected by back rib fasteners.

[0015] This utility model discloses a single-sided formwork support system for a raft slab lowering area. Further, the secondary back rib has locking teeth on both sides of its end near the main back rib. The back rib fastener includes a hook, a locking plate, and a fixing fastener. One end of the hook hooks onto the locking teeth, and the other end passes through the fixing fastener and is locked by a nut. The fixing fastener has an internal installation space, and the locking plate is located within the installation space with hooks formed at both ends for hooking onto the main back rib. The locking plate and the fixing fastener are tightened and fixed by horizontal screws. The end of the fixing fastener near the secondary back rib is bent to form a bent portion for abutting against the locking teeth.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This application can effectively solve the conflict between the formwork and the reinforcing steel when the formwork is laid out on one side in the raft foundation drop area. It does not require modification or damage to the original main structure reinforcing steel, and can ensure the mechanical properties and structural strength of the formwork system, shorten the construction period, and save construction costs.

[0018] In addition, the main back rib and the secondary back rib are connected by fasteners, which makes installation convenient and ensures the connection strength of the main and secondary back ribs.

[0019] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a side elevation view of a single-sided formwork frame in an example of the present invention;

[0021] Figure 2 This is a plan view of the single-sided formwork frame in an example of the present invention;

[0022] Figure 3 This is a front elevation view of a single-sided formwork support frame in an example of the present invention;

[0023] Figure 4 This is a node diagram of the connection part of the segmented double-channel steel support beam in an example of the present invention;

[0024] Figure 5This is a detailed drawing of the embedded part node in an example of the present invention;

[0025] Figure 6 This is a three-dimensional schematic diagram of a single-sided formwork frame in an example of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection of the triangular plate in an example of the present invention;

[0027] Figure 8 This is a side view of the back-rib fastener in an example of the present invention;

[0028] Figure 9 This is a top view of the back-rib fastener in the example of the present invention.

[0029] Figure label:

[0030] 101. Template; 102. Back rib fastener; 103. Secondary back rib; 104. Connecting triangle plate; 105. Diagonal brace; 106. Main back rib; 107. Crossbeam; 108. Timber; 109. Core strip; 201. Embedded bolt; 202. Mechanical anchor plate; 203. Pressure beam; 302. Base plate structure; 1031. Clip; 1021. Hook; 1022. Clip plate; 1023. Fixing fastener; 1024. Horizontal screw; 1025. Hook; 1026. Bending section. Detailed Implementation

[0031] like Figures 1-9 As shown, this utility model discloses a single-sided formwork support system for the raft slab drop area, which is installed at the raft slab drop node for single-sided formwork support. It includes a template 101, multiple main back ribs 106 vertically arranged on the outside of the template 101, secondary back ribs 103 spaced along the height direction of the main back ribs 106 and abutting against the outside of the template 101, a crossbeam 107 arranged on the base plate structure 302 and connected to the main back ribs 106, and a diagonal brace 105 connecting the crossbeam 107 and the main back ribs 106.

[0032] Multiple main back ribs 106 are spaced along the length of the template 101, and multiple secondary back ribs 103 are spaced along the height of the template 101. The main back ribs 106 and secondary back ribs 103 are perpendicular to each other. The secondary back ribs 103 are installed on the main back ribs 106 via back rib fasteners 102. The main back ribs 106 are double-channel steel structures. The ends of the secondary back ribs 103 near the main back ribs 106 are fixed with locking teeth 1031. The inward-facing side of the locking teeth 1031 has an inclined surface, which gradually moves away from the inner side of the secondary back ribs 103 towards the outer side. The back rib fasteners 102 include hooks 1021, locking plates 1022, and fixing fasteners 1023. The fixing fasteners 1023 have an internal installation space, and the locking plates 1022 are located within the fasteners. Within the installation space of the fixing fastener 1023, the clamping plate 1022 and the fixing fastener 1023 are fastened by the horizontal screw 1024. The two ends of the clamping plate 1022 are provided with hooks 1025 that fasten to the main back rib 106. The horizontal screw 1024 passes through the clamping plate 1022 and the fixing fastener 1023 and fastens the clamping plate 1022 and the fixing fastener 1023 by nuts, while keeping the clamping plate 1022 and the main back rib 106 in a taut state.

[0033] One end of the hook 1021 is hooked onto the tooth 1031 on one side of the secondary back rib 103, and the other end passes through the fixing fastener 1023 and is locked by a nut, so that the hook 1021, the fixing fastener 1023 and the secondary back rib 103 are connected and secured; the end of the fixing fastener 1023 near the secondary back rib 103 is bent to form a bent part 1026 that abuts against the tooth 1031 on the other side of the secondary back rib 103.

[0034] Specifically, the fastener 1023 includes a vertical plate, one end of which is bent perpendicularly to form a long horizontal plate, and the other end is bent perpendicularly to form a short horizontal plate. A U-shaped space for mounting the clamping plate 1022 is formed between the vertical plate, the long horizontal plate, and the short horizontal plate. The end of the short horizontal plate is formed with a bent portion 1026 for abutting against the clamping teeth 1031.

[0035] The crossbeam 107 is divided into multiple segments, and the segmentation is preferably located at the point where the reserved reinforcement of the bottom plate structure 302 interferes. Adjacent crossbeam segments 107 are connected by a core strip 109, and the crossbeam 107 is supported by timber 108.

[0036] In one embodiment of this application, both the main back rib 106 and the crossbeam 107 are made of double channel steel. A connecting triangular plate 104 is provided at the gap between the crossbeam 107 and the main back rib 106. One end of the connecting triangular plate 104 is inserted into the channel steel gap of the main back rib 106 and connected and fixed to the main back rib 106 by bolts. The other end is inserted into the channel steel gap of the crossbeam 107 and connected and fixed to the crossbeam 107 by bolts.

[0037] The end of the core strip 109 is inserted into the channel steel gap of the crossbeam 107 and fixed with bolts; the diagonal brace 105 is a length adjustable support rod, one end of which is inserted into the gap of the main back rib 106 and fixed with bolts, and the other end is inserted into the gap of the crossbeam 107 and fixed with bolts. The diagonal brace 105 can be set in multiple vertically according to the height of the template 101.

[0038] The base plate structure 302 is pre-embedded with pre-embedded screws 201 that connect and fix the crossbeam 107, the main back rib 106 and the base plate structure 302. The pre-embedded screws 201 are inclined to the side facing the outside of the template 101, with one end embedded in the base plate structure 302 and the other end extending upward to the top of the crossbeam 107. A clamping beam 203 is set on the inclined plane of the connecting triangular plate 104. The pre-embedded screws 201 pass through the clamping beam 203 and are fastened by washers and tie nuts.

[0039] Furthermore, a mechanical anchor plate 202 is fixed to the pre-embedded end of the pre-embedded screw 201 to increase the anchoring capacity of the pre-embedded screw 201.

[0040] In one embodiment of this application:

[0041] To ensure optimal construction, the mechanical anchor plate 202 is 16mm thick, the pre-embedded screw 201 is 16mm in diameter, and bolt holes are provided on the central axis of the crossbeam 107 and the core strip 109. The crossbeam 107 has a cross section height of 120mm, and bolts are used to connect the crossbeam 107 and the core strip 109 together.

[0042] The installation steps are as follows:

[0043] Step 1: Mechanical anchor plate 202 and pre-embedded screw 201 are used as embedded parts for fixing the formwork support. They are embedded in the bottom plate structure 302 during construction, which can reduce the anchor length to 70%, save space occupied by the embedded parts, and reduce the conflict between them and the steel bars in the bottom plate structure 302.

[0044] Step 2: After the construction of the base slab structure 302 is completed, determine the location of the vertical structural reinforcement bars in the area of ​​the base slab structure 302.

[0045] Step 3: Analyze the planar position of the vertical structural spurs, cut the beam 107 that may conflict with it and cannot be avoided into multiple segments, connect them with core strips 109, and place the narrower core strips 109 at the vertical structural spurs that may conflict, thereby completing the avoidance.

[0046] Step 4: Assemble a single-sided formwork system using crossbeam 107, template 101, main back rib 106, secondary back rib 103, fasteners, diagonal braces 105, and core strip 109.

[0047] Step 5: Pour the concrete into the high-rise base slab structure 302. After the concrete reaches its strength, dismantle the frame.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A single-sided formwork system for a raft foundation drop zone, characterized in that: It includes a template (101), a main back rib (106) set on the outside of the template (101), a secondary back rib (103) installed on the main back rib (106) and abutting against the template (101), a crossbeam (107) set on the base plate structure (302) and connected to the main back rib (106), and a diagonal brace (105) connecting the crossbeam (107) and the main back rib (106); The crossbeam (107) is divided into multiple segments, and adjacent crossbeam segments (107) are connected by a core strip (109); The base plate structure (302) is pre-embedded with pre-embedded screws (201) to fix the crossbeam (107), the main back rib (106) to the base plate structure (302).

2. The single-sided formwork system for the raft slab drop area according to claim 1, characterized in that: The segment of the beam (107) is located at the point where the beam (107) interferes with the reserved reinforcing bars of the base plate structure (302).

3. The single-sided formwork system for the raft slab drop area according to claim 1, characterized in that: The crossbeam (107) is made of double channel steel, and the end of the core strip (109) is inserted between the double channel steel and fastened with bolts.

4. The single-sided formwork system for the raft slab drop area according to claim 3, characterized in that: The main back rib (106) is made of double channel steel. One end of the diagonal brace (105) is connected to the main back rib (106) by bolts, and the other end is connected to the crossbeam (107) by bolts.

5. A single-sided formwork system for a raft slab drop area according to claim 4, characterized in that: A connecting triangle plate (104) is provided at the gap between the crossbeam (107) and the channel steel of the main back rib (106). One end of the connecting triangle plate (104) is connected to the crossbeam (107), and the other end is connected to the main back rib (106).

6. The single-sided formwork system for the raft slab drop area according to claim 5, characterized in that: The connecting triangle plate (104) has an inclined plane, on which a clamping beam (203) is supported. The pre-embedded screw (201) passes through the clamping beam (203) and is locked by a nut.

7. The single-sided formwork system for the raft slab drop area according to claim 1, characterized in that: The pre-embedded screw (201) is anchored into the base plate structure (302) at one end and is provided with a mechanical anchor plate (202).

8. A single-sided formwork system for a raft slab drop area according to claim 4, characterized in that: The main back rib (106) and the secondary back rib (103) are connected by a back rib fastener (102).

9. A single-sided formwork system for a raft slab drop area according to claim 8, characterized in that: The secondary back rib (103) has locking teeth (1031) on both sides of its end near the main back rib (106). The back rib fastener (102) includes a hook (1021), a locking plate (1022), and a fixing fastener (1023). One end of the hook (1021) is hooked onto the locking tooth (1031), and the other end passes through the fixing fastener (1023) and is locked by a nut. The fixing fastener (1023) has an installation space inside. The card plate (1022) is located in the installation space and both ends of the card plate (1022) are formed with hooks (1025) for hooking onto the main back rib (106). The card plate (1022) and the fixing fastener (1023) are tightened and fixed by horizontal screws (1024). The fixing fastener (1023) has a bent portion (1026) at one end near the secondary back rib (103) for abutting against the card tooth (1031).

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