Construction method of rail transit buildings and their internal partition walls

Abstract

The present application discloses a construction method for a rail transit building and its internal partition wall, including: designing openings on the wall of the internal partition wall, wherein at least two horizontally adjacent rectangular openings are designed on the wall, and the widths of any two of the openings are respectively b1 and b2, and b2 ≤ b1, and the distance between the two openings is set as L, wherein: when L > b2, the two openings are reserved and set independently, and when L ≤ b2, the two openings are combined into an integrated opening (20); constructing the internal partition wall according to the above opening design scheme, and arranging a reinforcement structure around the opening.

Description

Technical Field

[0001] The present application relates to the technical field of rail transit engineering design and construction, and more specifically, to a construction method for a rail transit building and its inner partition wall. Background Art

[0002] As a modern construction method, internal partition walls (such as assembled integral internal partition walls of steel wire mesh expanded perlite) are widely used in various engineering projects due to their excellent fire prevention, fire resistance, sound insulation and easy construction. In order to meet the needs of opening windows or laying pipelines, it is necessary to open holes in the assembled integral internal partition walls.

[0003] However, in rail transit engineering projects, due to the special application scenarios involving many professional equipment and facilities, a large number of openings need to be opened on the assembled integral inner partition wall to meet the needs of various pipelines. When multiple openings are adjacent to each other, how to reasonably plan and handle them becomes a key issue. If multiple openings are integrated into one large opening, the demand for fire blocking may increase due to the large area, thereby affecting the fireproof effect of the subway partition wall; on the other hand, if each professional opening is opened independently and reinforced separately, it may have a negative impact on the integrity of the wall and weaken its earthquake resistance.

[0004] Therefore, how to design and construct a hole that meets the pipeline layout requirements without affecting the structural strength becomes a technical problem that needs to be solved in this application. Summary of the invention

[0005] In view of this, the present application proposes a construction method for an inner partition wall of a rail transit building.

[0006] According to the technical solution of the present application, a construction method for an inner partition wall of a rail transit building is proposed, the construction method comprising: designing an opening on the wall of the inner partition wall, wherein at least two horizontally adjacent rectangular openings are designed on the wall, the widths of any two openings are respectively b1 and b2, and b2≤b1, and the distance between the two openings is set to L, wherein: when L>b2, the two openings are kept unchanged and set independently, and when L≤b2, the two openings are merged into an integrated opening (20); the inner partition wall is constructed according to the above opening design scheme, and a reinforcement structure is set around the opening.

[0007] In addition, the present application also proposes a rail transit building, which includes an inner partition wall, and the inner partition wall is constructed by the above-mentioned construction method provided in the present application.

[0008] According to the technical solution of the present application, a construction method for a rail transit building and its internal partition walls is proposed. In the process of designing openings on the internal partition walls, some openings can be pre-integrated according to the actual needs of the project and corresponding and targeted reinforcement measures can be taken for the openings during the construction process, thereby reducing the disorderly and dense "opening" phenomenon that existed in the previous construction process of opening openings in the internal partition walls. On the basis of enhancing the overall mechanical stability and fire resistance of the building walls, it can meet the pipeline layout requirements, improve construction efficiency, and save construction costs.

[0009] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0011] Figure 1 It is a structural diagram of the openings of the internal partition wall before and after integration during the design process;

[0012] Figure 2 It is a side view schematic diagram of one of the reinforcement methods for the opening of the hole during the construction process (B≤1m and the opening height is not more than 1m);

[0013] Figure 3 It is a schematic diagram of the main view of one of the reinforcement methods for the opening of the hole during the construction process (B≤1m and the opening height is not more than 1m);

[0014] Figure 4 It is a side view schematic diagram of the second reinforcement method (1m<B≤2.6m) for the opening of the hole during the construction process;

[0015] Figure 5A This is a schematic diagram of the main view of the second reinforcement method for the opening of the hole during the construction process (1m<B≤2.6m). Figure 5B For another kind of opening for the hole (the lower edge of the integrated opening is flush with the bottom of the premise);

[0016] Figure 6 It is a side view schematic diagram of the third reinforcement method (2.6m<B≤5m) for the opening of the hole during the construction process;

[0017] Figure 7 It is a schematic diagram of the main view of the third reinforcement method (2.6m<B≤5m) for the opening of the hole during the construction process;

[0018] Figure 8 It is a structural schematic diagram of a U-shaped steel wire reinforcement mesh;

[0019] Fig. 9 It is a structural schematic diagram of a flat steel wire reinforcement mesh. DETAILED DESCRIPTION

[0020] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation modes. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0021] In rail transit engineering projects, since many professional equipment and facilities are involved, a large number of openings need to be opened on the assembled integral inner partition wall to meet the crossing requirements of various pipelines. This application proposes a construction method for the inner partition wall of a rail transit building, such as Figure 1 As shown, at least two horizontally adjacent rectangular openings are designed on the wall 10 (for example, with steel wire mesh expanded perlite as the main body), and the widths of any two openings are respectively b1 and b2, and b2≤b1, and the distance between the two openings is set to L. Next, whether the two openings are integrated or retained separately, in order to ensure that the assembled integral internal partition wall can meet the requirements of fire prevention and earthquake resistance during use, combined with the construction characteristics of the assembled integral internal partition wall of steel wire mesh expanded perlite, follow the following principles:

[0022] When the distance L between the two holes is greater than the smaller width b2 of the two holes, that is, when L>b2, the two holes are kept unchanged and set independently;

[0023] When the distance L between the two holes is less than or equal to b2, which is the smaller width of the two holes, that is, L≤b2, the two holes are merged into one integrated hole 20.

[0024] After the opening design is completed, the interior partition walls are constructed according to the design plan, and reinforcement structures are set around the unintegrated openings and / or the integrated openings.

[0025] The following will explain the specific reinforcement measures taken according to the different situations of the integrated opening 20 after integration:

[0026] Case 1: Assume that the width of the integrated opening 20 after integration is B. If the heights of the two openings before integration are not greater than 1m, and if the width of the integrated opening after integration is B≤1m, the following methods are adopted to set the reinforcement structure:

[0027] a1. A steel wire reinforcement mesh 30 is provided along the periphery of the integrated opening 20, and the steel wire reinforcement mesh 30 is coated on the edge of the integrated opening 20, for example, a steel wire mesh frame coated on the inside of the wall 10 and an expanded perlite sandwich panel to form a "U" shape, preferably, the steel wire reinforcement mesh 30 is tied to the steel wire mesh frame on the outside of the sandwich panel;

[0028] b1. Spray mortar (for example, with a thickness e between 28 mm and 32 mm) around the integrated hole 20, and during the spraying process, ensure that the mortar thickness inside and outside the steel wire reinforcement mesh 30 is the same.

[0029] Next, the mortar is cured. After the mortar hardens, the integral inner partition wall is assembled. The schematic diagram of the reinforcement structure effect is shown in the figure. Figure 2 , Figure 3 shown.

[0030] Case 2: Assume that the width of the integrated opening 20 after integration is B. If 1m<B≤2.6m, the reinforcement structure is set in the following way:

[0031] a2. For example, two front and rear diameters of 12mm are provided along the periphery of the integrated opening 20, such as 20mm from the edge of the integrated opening 20;

[0032] b2. Inscribed between the two structural steel bars 40 are provided a plurality of stirrups 50 having a spacing distance of, for example, 200 mm, perpendicular to the direction of the opening and having a diameter of, for example, 6 mm;

[0033] c2. A steel wire reinforcement mesh 30 is provided along the periphery of the integrated opening 20, and the steel wire reinforcement mesh 30 is covered on the edge of the integrated opening 20 (for example, on the steel wire mesh expanded perlite sandwich panel inside the wall 10) to form a "U" shape, and the steel wire reinforcement mesh 30 is tied to the steel wire mesh outside the sandwich panel;

[0034] d2. Spraying mortar around the integrated opening 20, including spraying mortar with a thickness e1 between 18mm-22mm on the outside of the steel wire reinforcement mesh 30, and spraying mortar with a thickness e2 between 38mm-42mm on the inside of the steel wire reinforcement mesh 30.

[0035] Next, the mortar is cured. After the mortar hardens, the integral inner partition wall is assembled. The reinforcement effect diagram is shown in the figure below. Figure 4 , as shown in Figure 5.

[0036] Case 3: Assume that the width of the integrated opening 20 after integration is B. If 2.6m<B≤5m, the reinforcement structure is set in the following way:

[0037] a3. A square steel structural column 60 having a side length the same as the thickness of the steel wire mesh expanded perlite sandwich panel wall inside the wall 10 is arranged along the left and right sides of the integrated opening 20, and a steel bar 70 having a diameter of, for example, 6 mm is welded to the side of the square steel structural column 60; wherein the square steel structural column 60 is welded to the top plate 90 and the bottom plate 100 of the wall 10 through embedded parts; in this way, the square steel structural column 60 can clamp the steel wire mesh outside the steel wire mesh expanded perlite sandwich panel inside the wall 10; next, a steel beam 80 welded to the square steel structural column 60 is arranged on the upper and lower sides of the integrated opening 20;

[0038] b3. A steel reinforcing mesh 30 is provided on the outside of the steel structural column 60 and along the periphery of the integrated opening 20, and the steel reinforcing mesh 30 is coated on the edge of the integrated opening 20, such as the steel wire mesh inside the wall 10 and the expanded perlite sandwich panel, forming a "U" shape, and the steel wire reinforcing mesh 30 is tied to the steel wire mesh outside the sandwich panel;

[0039] c3. Spray mortar with a thickness e between 28mm and 32mm around the integrated hole 20, and during the spraying process, ensure that the mortar thickness inside and outside the steel wire reinforcement mesh 30 is the same.

[0040] Next, the mortar is cured. After the mortar hardens, the integral inner partition wall is assembled. The reinforcement effect diagram is shown in the figure below. Figure 6 , Figure 7 shown.

[0041] In order to ensure the reinforcement effect and ensure that the assembled integral inner partition wall meets the use requirements, preferably, the length of the steel bar 70 is set to be no less than 400 mm.

[0042] In the above reinforcement measures, the last step requires spraying mortar around the integrated opening 20. There are many types of mortar. In order to ensure the reinforcement effect and ensure that the assembled integral interior partition wall meets the use requirements, preferably, the mortar is cement mortar with a cement and sand ratio of 1:2 to ensure that the mortar has enough bonding material to bond the sand and surrounding building materials.

[0043] According to different design schemes, the lower edge of the integrated opening 20 can be flush with the bottom of the wall 10 (eg Figure 5B ), or it may be higher than the bottom of the wall 10 (as shown in Figure 5A shown).

[0044] Also in order to ensure the reinforcement effect and ensure that the assembled integral interior partition wall meets the use requirements, in the above-mentioned reinforcement measures, when the steel wire reinforcement mesh 30 is set around the integrated opening 20, it is required that the length of the steel wire reinforcement mesh 30 wrapped on each side of the steel wire mesh expanded perlite sandwich panel is not less than 400mm, and when the steel wire reinforcement mesh 30 is tied to the steel wire mesh on the outside of the sandwich panel, it is required that there are no less than two tying points and the tying spacing is not greater than 200mm.

[0045] Furthermore, in order to ensure that the binding effect is solid and reliable, preferably, galvanized steel wire is used for binding when binding the steel wire reinforcement mesh 30 and the steel wire mesh frame on the outside of the sandwich panel.

[0046] In addition, when the steel wire reinforcement mesh 30 is arranged around the integrated opening 20, it is necessary to arrange the steel wire reinforcement mesh 30 in different forms according to the different positions of the integrated opening 20 for targeted reinforcement; specifically, the steel wire reinforcement mesh 30 includes two forms, one is a U-shaped steel wire reinforcement mesh 31 arranged around the integrated opening 20, such as Figure 8 One is provided at the four corners of the integrated hole 20 of the flat wire reinforcement mesh 32, such as Fig. 9 shown.

[0047] In addition, the present application also proposes a rail transit building, which includes an inner partition wall, and the inner partition wall is constructed by the above-mentioned construction method provided in the present application.

[0048] According to the technical solution of the present application, adjacent openings can be merged according to the situation during the design process, and corresponding and targeted reinforcement measures can be taken for the openings according to the actual needs of the project during the construction process, thereby reducing the disorderly and dense "opening" phenomenon that existed in the construction process of assembling integral internal partition wall openings in the past. On the basis of enhancing the overall mechanical stability and fire resistance of the building wall, the construction efficiency is improved and the construction cost is saved.

[0049] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0051] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A construction method for an inner partition wall of a rail transit building, the construction method comprising: An opening is designed on a wall (10) of an inner partition wall, wherein at least two horizontally adjacent rectangular openings are designed on the wall (10), and the widths of any two openings are respectively b1 and b2, and b2 ≤ b1, and the distance between the two openings is L, wherein: When L>b2, keep the two openings unchanged and set them independently. When L≤b2, the two openings are merged into one integrated opening (20); Construct the inner partition wall according to the above opening design plan, and set up a reinforcement structure around the opening; Assuming that the width of the integrated hole (20) is B, Or if the heights of the two openings before merging are no more than 1m and B≤1m, the following methods are adopted to set up the reinforcement structure: a1. A steel wire reinforcement mesh (30) is arranged along the periphery of the integrated opening (20), wherein the steel wire reinforcement mesh (30) is wrapped inside the wall (10) at the edge of the integrated opening (20), b1. Spraying mortar around the integrated hole (20), and the mortar has the same thickness inside and outside the steel wire reinforcement mesh (30); Or 1m<B≤2.6m, the following methods are adopted to set up the reinforcement structure: a2. Arranging structural steel bars (40) along the periphery of the integrated opening (20) at the edge of the integrated opening (20), b2. A plurality of stirrups (50) are provided between the structural steel bars (40) and arranged at intervals perpendicular to the direction of the opening. c2. A steel wire reinforcement mesh (30) is arranged along the periphery of the integrated opening (20), wherein the steel wire reinforcement mesh (30) is wrapped around the edge of the integrated opening (20) in the wall (10), d2. Spraying mortar around the integrated hole (20), including spraying mortar with a thickness e1 between 18 mm and 22 mm on the outer side of the steel wire reinforcement mesh (30), and spraying mortar with a thickness e2 between 38 mm and 42 mm on the inner side of the steel wire reinforcement mesh (30); Or 2.6m<B≤5m, the following methods are adopted to set up the reinforcement structure: a3. Square steel structural columns (60) are arranged along the left and right sides of the integrated opening (20), and steel bars (70) are welded to the sides of the square steel structural columns (60). The square steel structural columns (60) are welded to the top plate (90) and the bottom plate (100) of the wall (10) through embedded parts, and the square steel structural columns (60) clamp the steel wire mesh frame inside the wall (10); steel beams (80) welded to the square steel structural columns (60) are arranged along the upper and lower sides of the integrated opening (20), b3. A steel wire reinforcement mesh (30) is provided on the outer side of the steel structural column and along the periphery of the integrated opening (20), wherein the steel wire reinforcement mesh (30) is covered inside the wall (10) at the edge of the integrated opening (20), c3. Spray mortar around the integrated hole (20), and the thickness of the mortar inside and outside the steel wire reinforcement mesh (30) is the same.

2. The construction method of the inner partition wall of a rail transit building according to claim 1, characterized in that: The length of the steel bar (70) is not less than 400 mm.

3. The construction method of the inner partition wall of a rail transit building according to any one of claims 1 or 2, characterized in that: The mortar is a cement mortar with a cement to sand ratio of 1:2; and / or The lower edge of the integrated opening is flush with the bottom of the wall (10).

4. The construction method of the inner partition wall of a rail transit building according to any one of claims 1 or 2, characterized in that: The steel wire reinforcement mesh (30) is coated on the sandwich panel inside the wall (10), and the length of the steel wire reinforcement mesh (30) coated on each side of the sandwich panel is not less than 400 mm. The steel wire reinforcement mesh (30) is tied to the steel wire mesh frame on the outside of the sandwich panel at no less than two points, and the spacing between the tying is not greater than 200 mm.

5. The construction method of the inner partition wall of a rail transit building according to claim 4, characterized in that: When the steel wire reinforcement net (30) is tied to the steel wire mesh frame outside the sandwich panel, galvanized steel wire is used for tying.

6. The construction method of the inner partition wall of a rail transit building according to claim 4, characterized in that: The steel wire reinforcement net (30) comprises a U-shaped steel wire reinforcement net (31) arranged around the integrated hole (20) and a flat steel wire reinforcement net (32) arranged at the top corner of the integrated hole (20).

7. A rail transit building, comprising an inner partition wall constructed by the construction method according to any one of claims 1 to 6.

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