A construction method for hollow slab walls

Abstract

This invention belongs to the field of building construction technology and provides a construction method for hollow slab walls, including: several hollow slabs, each with a detachable support at one of its four corners, with an inner sleeve on the support inserted into a through hole in the hollow slab. The method includes the following steps: S1: lifting the first hollow slab with a crane and adjusting the position between the bolts and the support to ensure the first hollow slab is vertically positioned on the mounting surface; S2: filling the gap between the first hollow slab and the mounting surface with mortar, and proceeding to the next step after the mortar has cured. Compared with existing technologies, the advantage of this invention is that after the precast hollow slab (cavity) is cast, the inner sleeve can be removed from the through hole, and the entire support can be removed from the hollow slab. The support can be reused, thereby reducing construction costs.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a construction method for hollow slab walls. Background Technology

[0002] Conventional hollow slab stacking methods can be as follows: Figures 2 to 3 As shown, a hollow slab-based structural system can be formed by stacking hollow slabs horizontally on top and bottom, in conjunction with steel structural columns and ring beams.

[0003] In the formation of this structural system, the hoisting of hollow slabs into place, their temporary vertical placement, and the temporary fixing of upper and lower layers of hollow slabs are crucial construction stages. 1. The conventional method for hoisting hollow slabs is horizontal hoisting, such as... Figure 4 and Figure 5 As shown, this hoisting method is clearly not conducive to the subsequent horizontal upward installation and fixation of the hollow slabs; 2. As Figure 6 As shown, a long steel pipe can also be passed through the end hole of the hollow slab, and then the two ends of the steel pipe are tied to the slings to achieve horizontal upward lifting of the hollow slab. However, this type of hoisting equipment cannot support the temporary installation, fixing, and verticality calibration work after the hollow slab is in place. 3. Alternatively, the vertical placement and fixing of precast shear wall is usually achieved by connecting the wall's embedded parts with the diagonal bracing fixed to the floor. However, this building system is a new type of system, and there is no general technical reference for the vertical placement of single hollow slabs and the temporary fixing of upper and lower layers of hollow slabs involved in its installation method. If the precast shear wall installation method is used, the installation of the embedded parts alone will consume a lot of time and will lead to the deterioration of the hollow slab strength. The diagonal bracing components will also hinder other construction activities on the floor.

[0004] The special prestressed hollow slab cross-section structure is as follows: Figure 7 As shown, the shapes of each hole are geometrically asymmetrical; the ends of the hollow plate have slanted grooves that are not perpendicular to the plate surface, and when the plate is horizontally upward ( Figure 7 (Rotated 90°) It cannot stand up on its own geometric shape. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a construction method that can quickly and reliably assemble hollow slabs into walls, in light of the current state of the technology.

[0006] The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: A construction method for a hollow slab wall is proposed, comprising: a plurality of hollow slabs, wherein each hollow slab has a detachable support installed at one of its four corners, and an inner sleeve on the support is inserted into a through hole in the hollow slab, comprising the following steps:

[0007] S1: The hollow plate at the first end is lifted by a crane, and the position of the first end hollow plate is adjusted between the bolts and the support to make the hollow plate at the first end stand vertically on the mounting surface;

[0008] S2: Fill the gap between the hollow slab at the first end and the mounting surface by injecting mortar, and proceed to the next step after the mortar has cured;

[0009] S3: Lift the next hollow plate to the upper surface of the previous hollow plate using a crane;

[0010] S4: When the next hollow plate and the previous hollow plate are on the same vertical plane in space, the next hollow plate and the previous hollow plate are connected by screwing bolts into the support of the next hollow plate and the support of the previous hollow plate.

[0011] S5: Fill the gap between the next hollow slab and the previous hollow slab by injecting mortar, and proceed to the next step after the mortar has cured;

[0012] S6: Determine whether all the hollow panels have been installed. If yes, remove the supports on each hollow panel to form a wall panel. If not, return to step S3.

[0013] S7: Steel structural columns are then installed at both ends of the wall panel. The structural columns are connected to the prestressed steel bars extending from the longitudinal ends of the hollow slab, thereby forming a wall.

[0014] In the above-mentioned construction method for a hollow slab wall, the support has a first region, a second region, and a third region, and the horizontal height of the first region and the third region is higher than the horizontal height of the second region.

[0015] In the above-mentioned construction method of hollow slab wall, a first connecting part is formed between the first region and the second region, and a second connecting part is formed between the second region and the third region. The first region and the second region are both perpendicular to the first connecting part, and the second region and the third region are both perpendicular to the second connecting part.

[0016] In the above-mentioned construction method for a hollow slab wall, the end wall of the inner sleeve near the support is connected to the second region via a connecting handle.

[0017] In the above-mentioned construction method for hollow slab walls, the inner sleeve has a polygonal structure.

[0018] In the above-mentioned construction method for hollow slab walls, the length of the inner sleeve is longer than the length of the support.

[0019] In the above-mentioned construction method of hollow slab wall, a first threaded hole is provided on the first area and the third area, and the bolt is threadedly connected to the first threaded hole.

[0020] In the above-mentioned construction method for a hollow slab wall, a second threaded hole is provided in the second area, and a hook can be threadedly connected to the second threaded hole, the hook being connected to a crane.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] 1. After the precast hollow floor slab is cast, the inner sleeve can be removed from the through hole, and the entire support can be removed from the hollow slab. The support can be reused, thereby reducing the cost of construction.

[0023] 2. The structure is simple, convenient and practical, and has low manufacturing cost. It can significantly reduce the difficulty of wall installation in this type of building system, speed up the work progress, and save installation costs. Attached Figure Description

[0024] Figure 1 It is a schematic flowchart of the construction method;

[0025] Figure 2 This is a structural diagram of the existing wall structure;

[0026] Figure 3 This is an exploded view of the existing wall structure;

[0027] Figure 4 This is a structural diagram of a horizontally hoisted hollow slab as shown in Method 1;

[0028] Figure 5 This is a structural diagram of another horizontally hoisted hollow slab in Method 1;

[0029] Figure 6 This is a schematic diagram of the structure used in Method 2, which involves hoisting hollow slabs with long steel pipes.

[0030] Figure 7 This is a schematic diagram of a hollow slab structure;

[0031] Figure 8 This is a front view of the support, inner sleeve, and connecting handle;

[0032] Figure 9 This is a right view of the support, inner sleeve, and connecting handle;

[0033] Figure 10 This is a top view of the support, inner sleeve, and connecting handle;

[0034] Figure 11 This is the left view of the hollow slab hoisting process;

[0035] Figure 12 This is a structural schematic diagram of hollow slab hoisting;

[0036] Figure 13 This is a structural diagram of the hollow core slab and the mounting surface;

[0037] Figure 14 This is a structural schematic diagram of a hollow slab and an inclined mounting surface;

[0038] Figure 15 This is a schematic diagram of the structure connecting the next hollow slab to the previous hollow slab.

[0039] In the picture,

[0040] 1. Hollow core plate; 100mm through hole;

[0041] 2. Support; 200. Inner sleeve; 201. First region; 202. Second region; 203. Third region; 204. First connecting part; 205. Second connecting part; 206. Connecting handle; 207. First threaded hole; 208. Second threaded hole;

[0042] 3. Bolts;

[0043] 4. Hooks. Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] like Figures 7 to 15 As shown, the construction method of this hollow slab 1 wall includes: selecting a predetermined amount of hollow slabs 1, with detachable supports 2 installed at each of the four corners of the hollow slab 1, such that the inner sleeve 200 on each support 2 is inserted into the uppermost and smallest through holes 100 on the horizontal sides of both ends of the hollow slab 1, including the following steps:

[0046] S1: Screw hooks into the supports 2 on the two corners of one end of the hollow slab 1. The crane lifts the first hollow slab 1 by connecting it with the hooks, and adjusts the position between the fixing bolts 3 and the supports 2 to make the first hollow slab 1 stand vertically on the installation surface, i.e., the top surface of the foundation / floor / wall.

[0047] S2: Make a shear-resistant connector between the longitudinal joint between the first hollow slab 1 and the mounting surface and fill it with mortar. After the mortar has cured, loosen and remove the hooks on the two supports 2 at the top of the first hollow slab 1 to proceed to the next step.

[0048] S3: Screw the hooks into the supports 2 on the two corners of the next hollow slab 1 at one end, and lift the next hollow slab 1 to the upper surface of the previous hollow slab 1 by means of the cooperation between the crane and the hooks.

[0049] S4: With the assistance of construction personnel, after the lower hollow slab 1 and the upper hollow slab 1 are in the same vertical plane in space, bolts 3 are temporarily screwed into the support 2 of the upper hollow slab 1 to fix it, so that the lower hollow slab 1 and the upper hollow slab 1 are connected.

[0050] S5: Install shear-resistant connectors and fill them with mortar between the longitudinal joints of the next hollow slab 1 and the previous hollow slab 1, and proceed to the next step after the mortar has cured.

[0051] S6: Determine whether all hollow slabs 1 have been installed. If so, the construction workers will remove the supports 2 on each hollow slab 1 and disengage the inner sleeve 200 from the through hole 100 of the hollow slab 1, and then proceed to the next step. If not, return to step S3.

[0052] S7: Steel structural columns are then installed at both ends of the wall panel. The structural columns are connected to the prestressed steel bars extending from the longitudinal ends of the hollow slab 1 to form the wall.

[0053] It should be noted that the first hollow slab 1 refers to the first hollow slab 1 used in the construction process, and the depth to which the bolt is screwed into the first connecting hole can be as follows: Figure 10 As shown, adjustments are made according to the tilt of the mounting surface.

[0054] Preferably, the support 2 can be divided into a first region 201, a second region 202, and a third region 203. The horizontal height of the first region 201 and the third region 203 is higher than that of the second region 202. A first connecting part 204 is formed between the first region 201 and the second region 202, and a second connecting part 205 is formed between the second region 202 and the third region 203. The first region 201 and the second region 202 are both perpendicular to the first connecting part 204, and the second region 202 and the second region 205 are both perpendicular to the second connecting part 205. Thus, the support 2 forms a U-shaped structure, which allows the U-shaped support 2 to level the four corners of the hollow slab 1, facilitating subsequent construction and assembly.

[0055] More preferably, the inner sleeve 200, the connecting handle 206, the U-shaped support 2, and the fixing and adjusting bolt 3 are all made of steel, with a wall thickness of about 10mm and a length of about 210mm, and are formed by casting. Its outer shape and dimensions are completely consistent with the through hole at the end of the hollow plate 1. The connecting handle 206 is made of steel, with a thickness of about 10mm and a width of about 50mm. One end is welded to the inner sleeve 2001, and the other end is welded to the support 2. The support 2 is made of steel, with a thickness of about 10mm and a width of about 50mm, and is a U-shaped shape with an outwardly folded edge.

[0056] It is worth mentioning that, for example, the special prestressed hollow slab 1 Figure 7As shown, each hole is geometrically asymmetrical, i.e., a polygonal structure; the hollow plate 1 has an oblique groove at the end, which is not perpendicular to the plate surface; the inner sleeve 200 has a polygonal structure in its cylinder wall; the inner sleeve 200 has a clearance fit with the uppermost and smallest through holes 100, i.e., the outermost through holes 100, at both ends of the hollow plate 1; the use of a polygonal structure can ensure the temporary installation, fixing and verticality calibration work after the hollow plate 1 is in place.

[0057] More preferably, the inner sleeve 200 is longer than the support 2. The advantage of this setting is that after the crane lifts the support 2, the inner sleeve 200 will abut against the through hole 100 to prevent force majeure events such as wind speed and direction during construction. Furthermore, a first threaded hole 207 is provided in the first region 201 and the third region 203. The first threaded hole 207 can be used to connect with the bolt 3, thereby realizing the position adjustment between the fixing and adjusting bolt 3 and the support 2 so that the hollow plate 1 at the first end stands vertically on the mounting surface. A second threaded hole 208 is provided in the second region 202. A hook 4 can be threadedly connected to the second threaded hole 208, and the hook 4 can be connected to the crane's hanging rope or other lifting objects.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0059] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A construction method for hollow core slab walls, characterized in that, include: Several hollow slabs, each with a detachable support at one of the four corners, have inner sleeves on the supports inserted into through holes in the hollow slabs. When a crane lifts the supports, the inner sleeves press against the through holes, forming a U-shaped structure. This U-shaped structure allows the supports to level the four corners of the hollow slabs. The process includes the following steps: S1: The hollow plate at the first end is lifted by a crane, and the position of the first end is adjusted between the bolts and the support to make the hollow plate at the first end stand vertically on the mounting surface; S2: Fill the gap between the hollow slab at the first end and the mounting surface by injecting mortar, and proceed to the next step after the mortar has cured; S3: Lift the next hollow plate to the upper surface of the previous hollow plate using a crane; S4: When the next hollow plate and the previous hollow plate are in the same vertical plane in space, the support of the next hollow plate is connected to the support of the previous hollow plate by screwing bolts into the support of the next hollow plate and the support of the previous hollow plate. S5: Fill the gap between the next hollow slab and the previous hollow slab by injecting mortar, and proceed to the next step after the mortar has cured; S6: Determine whether all the hollow panels have been installed. If yes, remove the supports on each hollow panel to form a wall panel. If not, return to step S3. S7: Steel structural columns are then installed at both ends of the wall panel. The structural columns are connected to the prestressed steel bars extending from the longitudinal ends of the hollow slab, thereby forming a wall.

2. The construction method of a hollow slab wall according to claim 1, characterized in that, The support has a first region, a second region, and a third region, wherein the horizontal height of the first region and the third region is higher than the horizontal height of the second region.

3. The construction method of a hollow slab wall according to claim 2, characterized in that, A first connecting portion is formed between the first region and the second region, and a second connecting portion is formed between the second region and the third region. The first region and the second region are both perpendicular to the first connecting portion, and the second region and the third region are both perpendicular to the second connecting portion.

4. The construction method of a hollow slab wall according to claim 3, characterized in that, The end wall of the inner sleeve near the support is connected to the second region via a connecting handle.

5. The construction method of a hollow slab wall according to claim 1, characterized in that, The inner sleeve has a polygonal wall structure.

6. The construction method of a hollow slab wall according to claim 1, characterized in that, The length of the inner sleeve is longer than the length of the support.

7. A construction method for a hollow slab wall according to claim 3, characterized in that, The first region and the third region are provided with a first threaded hole, and the bolt is threadedly connected to the first threaded hole.

8. A construction method for a hollow slab wall according to claim 3, characterized in that, The second area has a second threaded hole, and a hook can be threadedly connected to the second threaded hole. The hook is connected to the crane.

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