Basement exterior wall post-cast strip sealing structure

Abstract

The utility model relates to a basement exterior wall post-cast strip sealing structure which is structurally characterized in that cement fiber plates are fixed on basement exterior walls on two sides of a post-cast strip on the outer side of a basement, cover a post-cast strip hole between the basement exterior walls on two sides of the post-cast strip and extend towards two sides, and waterproof layers cover the outer sides of the cement fiber plates. And a waterproof protection layer covers the outer side of the waterproof layer. The utility model has the advantages that: 1) the process is simple, and brick masonry, a prefabricated reinforced concrete cover plate and a prefabricated steel cover plate can be replaced by the finished cement fiberboard; the cement fiberboard can be cut only by a common cutting machine, so that a tedious masonry process, a reinforced concrete cover plate prefabrication process, a mortar painting process and a steel cover plate processing and welding process are omitted; 2) the installation is simple, the operation is easy, the cement fiberboard is adopted to replace a brick masonry, a prefabricated reinforced concrete cover plate and a prefabricated steel cover plate, the cement fiberboard is light in weight and can be manually installed, and the prefabricated reinforced concrete cover plate and the prefabricated steel cover plate are heavier and need to be installed by means of hoisting machinery;

Description

Technical Field

[0001] The utility model relates to a post-cast strip closing structure for the basement exterior wall, belonging to the technical field of building construction. Background Technique

[0002] To reduce the influence of temperature stress, settlement and other reasons on the building structure, temperature post-cast strips and settlement post-cast strips need to be set in the basement. The concrete of the temperature post-cast strip needs to be retained for at least 45 days before it can be closed. The settlement post-cast strip takes even longer, with a retention time of not less than two months. It is necessary to wait until the settlement of the structural units on both sides of the post-cast strip is basically stable before closing. Before the post-cast strip is closed, rainwater, garbage, etc. entering the basement through the post-cast strip will affect the construction, and the periphery of the basement cannot be backfilled, seriously restricting the construction of the above-ground structure and landscape greening construction, and affecting the construction progress.

[0003] In the prior art, there are mainly three types of basement post-cast strip exterior wall closing technologies:

[0004] The first type: The exterior wall of the basement post-cast strip is closed by masonry on the outside. The technological process is: erecting the scaffolding for the post-cast strip closing wall → masonry of the exterior wall post-cast strip closing wall (mixing mortar, wall masonry) → plastering of the exterior wall post-cast strip closing wall → curing → construction of the exterior wall waterproof layer and protective layer → backfilling and compaction of the soil on the outside of the exterior wall.

[0005] The disadvantages of the above process are: ① The process is cumbersome and requires mixing mortar and masonry of the wall; ② The wall at the post-cast strip needs to be plastered with mortar and cured, and the mortar is prone to cracking and bulging, affecting the waterproof construction quality; ③ The project cost is high and the construction period is long; it is greatly affected by the weather and cannot be constructed in low-temperature weather; ④ Dust is easily generated when mixing mortar, causing environmental pollution.

[0006] The second type: The exterior wall of the basement post-cast strip is closed by precast reinforced concrete cover plates on the outside, such as CN213014375U and CN203625942U. The technological process is: production of precast reinforced concrete cover plates → erecting the scaffolding for the post-cast strip closing wall → hoisting of precast concrete cover plates by tower crane or truck crane → welding and fixing of the hook steel bars of the precast cover plates and the post-cast strip steel bars → sequentially installing the second, third, etc. precast reinforced concrete cover plates → base treatment of the exterior wall post-cast strip precast cover plates → plastering of the exterior wall post-cast strip precast concrete cover plates and the joints → curing → construction of the exterior wall waterproof layer and protective layer → backfilling and compaction of the soil on the outside of the exterior wall.

[0007] The disadvantages of the above process are as follows: ① The process is cumbersome. For the precast cover plate, there are processes such as steel bar processing, steel bar binding, hook installation, formwork installation, concrete pouring, finishing and curing; ② During processing, there are high requirements for controlling the thickness of the precast reinforced concrete cover plate. When the thickness deviation is large, the thickness of the silt mortar is uneven, which is prone to hollowing and cracking; ③ The precast concrete cover plate is relatively heavy and requires the assistance of a truck crane or tower crane for installation. Since the cover plate is heavy, the hook needs to be welded to the post-cast strip steel bars to be firm, and the welding causes damage to the main structure steel bars; ④ From the precast yard of the cover plate to the installation position, it requires the assistance of a truck crane and vehicle transportation, increasing costs; ⑤ The precast cover plate needs to be plastered and the joints need to be treated. The mixing of mortar is prone to environmental protection problems. Plastering is prone to hollowing and is limited by the environmental temperature; ⑥ There are many processes, long construction period and high project cost.

[0008] The third category: The post-cast strip steel plate sealing structure for the basement exterior wall, such as CN204551547U and CN206768878U. The process flow is as follows: manufacturing and welding of the steel plate and anchor bars for sealing → erection of the scaffold for the post-cast strip closed wall → hoisting of the sealing steel plate by a tower crane or truck crane → binding of the anchor bars of the sealing steel plate to the post-cast strip steel bars → anti-corrosion on the outside of the closed steel plate → construction of the exterior wall waterproof layer and protective layer → backfilling and compaction of the soil on the outside of the exterior wall.

[0009] The disadvantages of the above process are as follows: ① The manufacturing of the sealing steel plate includes processes such as anchor bar processing, steel plate manufacturing, steel plate welding, and welding of the steel plate and anchor bars. The process is cumbersome and the cost is relatively high; ② A large number of anchor bars are required; ③ The sealing steel plate is relatively heavy and inconvenient to operate during installation; ④ The sealing steel plate is relatively heavy and requires the assistance of a truck crane or tower crane for installation. ⑤ The sealing steel plate is prone to rust.

[0010] In summary, the existing technology for sealing the exterior wall of the basement post-cast strip has disadvantages such as cumbersome process, high installation difficulty, dependence on lifting equipment for installation, long construction period, environmental pollution, and high cost. Utility Model Content

[0011] The present utility model provides a sealing structure for the basement exterior wall post-cast strip. The purpose is to overcome the above deficiencies existing in the prior art. On the premise of solving the problems of long construction period for soil backfilling and inability to construct the upper structure caused by untimely post-pouring and sealing of the basement exterior wall, the structure and installation process are simplified, the construction period is shortened, and the construction difficulty and project cost are reduced.

[0012] The technical solution of the present utility model: A sealing structure for the basement exterior wall post-cast strip, the structure includes a cement fiber board. Cement fiber boards are fixed on the basement exterior walls on both sides of the post-cast strip on the outside of the basement. The cement fiber board covers the post-cast strip opening between the basement exterior walls on both sides and extends to both sides. A waterproof layer is covered on the outside of the cement fiber board, and a waterproof protective layer is covered on the outside of the waterproof layer.

[0013] Preferably, it further includes plastic expansion nails, and the cement fiber board is fixed on the basement exterior walls on both sides of the post-cast strip through the plastic expansion nails.

[0014] Preferably, it further includes concrete cushion blocks. The concrete cushion blocks are provided with binding wires, and the concrete cushion blocks are installed in the middle of the post-cast strip steel bars on the outside of the basement through the binding wires. The concrete cushion blocks support between the cement fiber board and the post-cast strip steel bars.

[0015] Advantages of the present utility model: 1) The process is simple. Finished cement fiber boards can be directly used to replace brick masonry, precast reinforced concrete covers, and precast steel covers. The cement fiber board can be cut by an ordinary cutting machine, eliminating the cumbersome masonry process, precast process of reinforced concrete covers, mortar plastering process, and processing and welding process of steel covers;

[0016] 2) The installation is simple and easy to operate. The cement fiber board is used to replace brick masonry, precast reinforced concrete covers, and precast steel covers. The cement fiber board is light in weight and can be installed manually, while the precast reinforced concrete covers and precast steel covers are heavier and need to be installed with the aid of lifting machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic plan view of the post-cast strip closing structure of the basement exterior wall of the present utility model.

[0018] Figure 2 is Figure 1 an enlarged schematic view of the cement fiber board fixing structure in

[0019] Figure 3 is Figure 1 an enlarged schematic view of the concrete cushion block supporting structure on the inner side of the cement fiber board in

[0020] In the figure, 1 is the basement exterior wall on both sides of the post-cast strip, 2 is the waterproof layer, 3 is the waterproof protective layer, 4 is the cement fiber board, 5 is the plastic expansion nail, 6 is the concrete cushion block, 7 is the water stop steel plate, and 8 is the post-cast strip steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below in conjunction with the embodiments and the specific implementation manners.

[0022] As Figures 1 - 3 shown, a post-cast strip closing structure for a basement exterior wall includes a cement fiber board 4, plastic expansion nails 5, and concrete cushion blocks 6. Among them, the concrete cushion blocks 6 are provided with binding wires, and the concrete cushion blocks 6 are installed in the middle of the post-cast strip steel bars 8 on the outside of the basement through the binding wires. The cement fiber board 4 is fixed on the basement exterior walls 1 on both sides of the post-cast strip on the outside of the basement. The concrete cushion blocks 6 support between the cement fiber board 4 and the post-cast strip steel bars 8. The waterproof layer 2 is covered on the outside of the cement fiber board 4, and the waterproof protective layer 3 is covered on the outside of the waterproof layer 2.

[0023] The cement fiber board 4 is specifically fixed on the basement exterior wall 1 on both sides of the post-cast strip through plastic expansion nails 5.

[0024] The cement fiber board 4 covers the post-cast strip opening between the basement exterior walls 1 on both sides of the post-cast strip and extends to both sides, preferably 20 cm.

[0025] Waterstop steel plates 7 are also installed on the basement exterior walls 1 on both sides of the post-cast strip on both sides of the post-cast strip opening. Embodiment

[0026] The flexural strength of the cement fiber board 1 should be greater than 25 mpa and it should be waterproof. The dimensions are: width 1.2 m * length 1.2 - 1.7 m (this length design is convenient for manual installation and operation), and thickness 15 - 24 mm (the lateral pressure of the backfill soil is positively correlated with the thickness of the board). Compared with concrete covers and steel covers, the cement fiber board 1 is lighter in weight and does not require the cooperation of lifting equipment for installation, and can be installed manually with convenient operation.

[0027] The cement fiber board 1 is fixed to the basement exterior wall 1 on both sides of the post-cast strip with plastic expansion nails 5 every 30 - 40 cm vertically. The cement fiber board 1 is fixed with plastic expansion nails 5, which is simpler in operation, more convenient for installation, lower in cost, and does not damage the main structure steel bars compared with the welding of the concrete cover hook and the post-cast strip steel bars.

[0028] A concrete cushion block 6 is installed every 50 cm inside the cement fiber board 1 and the post-cast strip steel bars 8 (one should be added at the joint of the cement fiber board 1, and the joint should be tight), increasing the support points of the cement fiber board 1 and reducing the compression deformation of the cement fiber board during soil backfilling.

[0029] The construction process includes the following steps:

[0030] 1) Fabrication of the cement fiber board assembly: The width of the post-cast strip is 800 mm, and the standard size of the finished cement fiber board is 1.2 m wide * 2.4 m long (the thickness of the cement fiber board is selected according to the lateral pressure of the backfill soil, generally 20 mm thick), and a cement fiber board installation assembly with a length of 1.2 m * 1.2 - 1.7 m is fabricated using a cutting machine;

[0031] 2) Install concrete cushion blocks (the strength and thickness of the concrete cushion blocks can be determined according to the requirements of the design drawings) in the middle part between the outer steel bars of the post-cast strip and the joints of the cement fiber boards according to the size of the cement fiber board installation assembly;

[0032] 3) Install the cement fiber board assembly, and fix the cement fiber board (the two sides of the joint need to be fixed again) vertically every 30 - 40 cm with plastic expansion nails (M6 * 80), and the plastic expansion nails are 10 cm away from the post-cast strip opening;

[0033] 4) Construct a waterproof layer on the outside of the cement fiber board.

[0034] 5) Construct a waterproof protective layer on the outside of the waterproof layer.

[0035] All the components described above are prior arts, and those skilled in the art can use any models and existing designs that can achieve their corresponding functions.

[0036] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A basement exterior wall post-cast strip enclosed structure, characterized in that: The invention comprises a cement fiber board (4), wherein the cement fiber board (4) is fixed on the basement outer walls (1) on both sides of the post-cast strip outside the basement, the cement fiber board (4) covers the post-cast strip opening between the basement outer walls (1) on both sides of the post-cast strip and extends to both sides, the outer side of the cement fiber board (4) is covered with a waterproof layer (2), and the outer side of the waterproof layer (2) is covered with a waterproof protective layer (3).

2. A basement exterior wall post-cast strip enclosed structure as claimed in claim 1, characterized in that: It also includes plastic expansion nails (5), and the cement fiber board (4) is fixed to the basement outer walls (1) on both sides of the post-cast strip by means of the plastic expansion nails (5).

3. A basement exterior wall post-cast strip enclosed structure as claimed in claim 1, characterized in that: It also includes a concrete pad (6) having a tie wire, the concrete pad (6) being installed in the middle of the post-cast strip steel bars (8) outside the basement through the tie wire, and the concrete pad (6) being supported between the cement fiber board (4) and the post-cast strip steel bars (8).

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