Trestle plate formwork-erecting-free construction system
By adopting a support-free construction system in the construction of the pier and using the method of pouring support beams and backfill in advance, the problem of difficult dismantling the pier after earth excavation is solved, and the construction progress is guaranteed and safety is improved. and cost savings.
Patent Information
- Application Number
- CN202421170287.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the existing trench panel construction technology, it is difficult to dismantle the trench panel after earth excavation, resulting in slow construction progress, high safety risks and high costs.
A pierced-plate support-free construction system is adopted, which includes the installation of support beams, isolation linoleum and backfill soil layers. By pouring support beams and backfill soil in advance, the problem of difficult dismantling of the pierced-plate is solved.
It realizes that the support beams and backfill soil are poured in advance when the steel pipe wooden square formwork support form is supported, solving the problem of difficult dismantling of the pier board, and ensuring construction progress, safety and cost savings.
Smart Images
Figure CN222513105U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of trestle board construction, in particular to a trestle board formwork-free construction system. Background Art
[0002] With the rapid development of cities, land resources are in short supply and underground space is being fully utilized. For deep and large foundation pits, concrete internal support and enclosure structures are increasingly being used on construction sites. However, the trestle slab is constructed according to conventional formwork and can only be removed after the next layer of earthwork is excavated. During the removal process, an operating frame needs to be set up, which brings many changes, and the templates and wood have the risk of falling, which brings great safety hazards. Summary of the invention
[0003] In view of the above-mentioned prior art, the utility model proposes a formwork-free construction system for a trestle board.
[0004] The utility model provides a formwork-free construction system for a trestle board, comprising a trestle board, both ends of the trestle board are provided with support beams, the lower end of the trestle board is provided with isolation felt, and the lower end of the isolation felt is provided with a backfill soil layer.
[0005] Preferably, lattice columns and steel bars are provided inside the support beam, and the lower part of the lattice column extends to the inside of the original soil layer.
[0006] Preferably, the trestle deck is made of reinforced concrete.
[0007] Preferably, a cushion layer is provided at the lower end of the support beam.
[0008] Preferably, both side ends of the cushion layer extend outward by 100 mm relative to the support beam.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a formwork-free construction system for trestle slabs, which can solve the problem of difficult formwork removal of trestle slabs after earth excavation by pouring support beams and backfilling soil in advance under the condition of using steel pipe and wooden formwork for formwork, thereby ensuring construction progress, safety and cost savings. The utility model can effectively improve the related issues of trestle slab formwork construction, thereby giving play to the advantages of green environmental protection, reducing the installation and removal of concrete formworks, wooden squares and steel pipes, and ensuring the safety and reliability of construction. The utility model fully realizes the safe construction design strategy adapted to local conditions, reduces the project cost and saves costs while ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the formwork-free construction system of the trestle board in the embodiment of the utility model.
[0011] In the figure: 1. trestle board; 2. supporting beam; 3. isolation felt; 4. backfill soil layer; 5. lattice column; 6. original soil layer; 7. cushion layer. DETAILED DESCRIPTION
[0012] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.
[0013] Example: Figure 1 A formwork-free construction system for a trestle slab is shown, comprising a trestle slab 1, which is made of reinforced concrete. Support beams 2 are arranged at both ends of the trestle slab 1, an isolation felt 3 is arranged at the lower end of the trestle slab 1, a backfill soil layer 4 is arranged at the lower end of the isolation felt 3, a lattice column 5 and steel bars are arranged inside the support beam 2, the lower part of the lattice column 5 extends to the inside of the original soil layer 6, a cushion layer 7 is arranged at the lower end of the support beam 2, and both side ends of the cushion layer 7 extend outward by 100 mm relative to the support beam 2.
[0014] When the construction system is used in a specific application, according to the drawings and design requirements, the earthwork is excavated to the bottom elevation of the support beam 2, and the lower cushion layer of the support beam is measured and laid out, with 100mm on each side of the beam. The ink fountain edge line of the support beam is popped out on the cast cushion layer 7, the support beam steel bars are tied according to the design drawings, and the support beam template is installed and reinforced to ensure horizontal and vertical. After the template is installed, it passes the hidden acceptance and the support beam concrete is poured to the lower end of the trestle board 1. During the process, pay attention to vibration to ensure density. After the demoulding conditions are met, the support beam template is removed. During the process, pay attention to watering and curing. After the concrete reaches the design strength, the plain soil is backfilled between the support beams in the trestle board area. The process is compacted and leveled to the bottom elevation of the trestle board. After the backfill is completed, the isolation felt 3 is laid under the trestle board, and the trestle board steel bars are tied after the laying is completed. After the tying is completed, the trestle board concrete is poured. After the trestle board reaches the design strength, the lower earthwork can be excavated, and there is no need to remove the trestle board bottom template later.
[0015] This embodiment can solve the problem of difficult formwork and difficult formwork removal of the trestle slab, ensure the construction quality, and the construction is convenient and simple, there is no need to cast the lower cushion layer of the trestle slab and set up the trestle slab formwork frame, which can save labor and materials, and there is no need to remove the bottom formwork of the trestle slab after the lower earth is excavated, reducing the safety hazards of setting up the operating frame and removing the formwork, as well as the safety risks of formwork, wood and steel pipes falling, fully realizing the construction concept of adapting measures to local conditions, supporting the trestle construction is the earth excavation stage, and fully utilizing the earth backfill. This method solves the problem that the original trestle slab construction is difficult and even more difficult to remove the formwork.
[0016] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.
Claims
1. A formwork-free construction system for trestle slabs, characterized in that: The utility model comprises a trestle board, both ends of which are provided with supporting beams, the lower end of which is provided with insulating felt, and the lower end of which is provided with a backfill soil layer.
2. The formwork-free construction system for trestle slabs according to claim 1, characterized in that: Lattice columns and steel bars are arranged inside the support beam, and the lower part of the lattice column extends to the inside of the original soil layer.
3. The formwork-free construction system for trestle slabs according to claim 1 or 2, characterized in that: The trestle board is made of reinforced concrete.
4. The formwork-free construction system for trestle slabs according to claim 1 or 2, characterized in that: A cushion layer is arranged at the lower end of the support beam.
5. The formwork-free construction system for trestle slabs according to claim 4, characterized in that: Both side ends of the cushion layer extend outwards by 100 mm relative to the support beam.