Composite shear wall with reinforced trusses and tensioning system for concrete modular buildings

Abstract

The present invention discloses a composite shear wall with a steel truss and a tensioning system for concrete modular buildings, comprising: a precast concrete wall, a steel truss, and a tensioning mechanism; the precast concrete wall comprises a first precast concrete wall and a second precast concrete wall; one end of the steel truss is pre-embedded in the first precast concrete wall and the second precast concrete wall, respectively; the tensioning mechanism is mounted on the steel truss; the first precast concrete wall and the second precast concrete wall are tensioned by the tensioning mechanism mounted on the steel truss, and concrete is poured; the tensioning mechanism comprises a J-shaped hook tensioning member, or a round hole inserted bar tensioning member, or a tapered hole tensioning member and a tapered head tensioning member that tension each other. The present invention reduces the weight of the concrete module by providing the steel truss, facilitating transportation and hoisting; at the same time, the presence of the steel frame enhances the strength and rigidity of the precast wall, reducing the problem of wall cracking during module transportation and hoisting.

Description

Technical Field

[0001] The present invention relates to the technical field of modular integrated buildings, in particular to a composite shear wall with a steel bar truss and a tension system for concrete modular buildings. Background Art

[0002] Modular integrated buildings prefabricate the structure, mechanical and electrical components, and interior design in a factory, then transport the modules to the site for installation. This technology minimizes on-site operations and transforms the construction industry into a manufacturing industry.

[0003] The shear walls of modular buildings are either prefabricated solid walls or composite walls. The former is not suitable for interior walls, while the latter requires pouring concrete between two adjacent modules to complete the superposition of prefabricated walls. The composite shear walls of modular buildings have the following problems

[0004] There are problems with insufficient strength and rigidity during transportation and installation, resulting in cracks;

[0005] During the construction process, pouring concrete will bring horizontal pressure to the prefabricated part of the shear wall, so it is necessary to set up supports and tension bolts, which will cause damage to the decoration inside the module;

[0006] During use, the combined effect of post-cast concrete and precast walls is not strong, resulting in wall peeling and cracking, and the inability to coordinate stress;

[0007] The lack of modular building composite shear wall technology makes modular integrated buildings lack competitiveness, which in turn affects their market promotion. Summary of the Invention

[0008] In view of the problems existing in the prior art, the present invention provides a composite shear wall with a steel bar truss and a tension system for concrete modular buildings.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows:

[0010] A composite shear wall with a steel truss and a tensioning system for concrete modular buildings, characterized by comprising: a prefabricated concrete wall, a steel truss, and a tensioning mechanism;

[0011] The precast concrete wall comprises a first precast concrete wall and a second precast concrete wall; one end of the steel truss is respectively embedded in the first precast concrete wall and the second precast concrete wall; the tension mechanism is installed on the steel truss;

[0012] The first prefabricated concrete wall and the second prefabricated concrete wall are tensioned by a tensioning mechanism installed on the steel truss, and concrete is poured;

[0013] The pulling mechanism includes a J-shaped hook pulling member, or a round hole inserted bar pulling member, or a tapered hole pulling member and a tapered head pulling member that pull each other.

[0014] Preferably, the steel truss comprises two web members, an upper chord, and two shear wall vertical steel bars; one end of each of the two web members is provided with two shear wall vertical steel bars extending outwards;

[0015] When the tensioning mechanism is configured as a J-shaped hook tensioning member, the J-shaped hook tensioning member is connected to the other ends of the two web members via an upper chord;

[0016] When the tension mechanism is configured as a round hole inserted steel bar tension member, the round hole inserted steel bar tension member is connected to the other ends of the two web members via an upper chord;

[0017] When the pulling mechanism is configured as a tapered hole puller and a tapered head puller that pull each other, the tapered hole puller and the tapered head puller are respectively connected to the other ends of the two web members via an upper chord.

[0018] Preferably, the spacing between the steel bar trusses is less than 600 mm.

[0019] Preferably, the first precast concrete wall and the second precast concrete wall are both pre-embedded with shear wall horizontal steel bars; the two shear wall vertical steel bars are fixed corresponding to the shear wall horizontal steel bars.

[0020] Preferably, when the round hole inserted bar and the tension piece are pulled against each other, the inserted bar is correspondingly inserted into the round hole of the round hole inserted bar and fixed.

[0021] Preferably, the tapered hole puller includes a connecting rod and a tapered hole portion installed on the head of the connecting rod; the tapered hole portion includes a channel steel and inclined steel plates installed on both sides of the top of the channel steel portion; the bottom of the inclined steel plate forms a tapered hole with the channel steel.

[0022] Preferably, the concrete precast wall 1 includes a concrete precast wall upper module, a concrete precast wall lower module, a floor 1 arranged on the bottom side of the concrete precast wall upper module, and a floor 2 arranged on the top side of the concrete precast wall lower module; when the concrete precast wall upper module and the concrete precast wall lower module are aligned, the overlapping steel bars overlap the tensioning mechanisms on the concrete precast wall upper module and the concrete precast wall lower module; a mortar layer 1 is provided between the floor 1 and the floor 2.

[0023] Preferably, the concrete precast wall 2 includes a concrete precast wall 2 upper module, a concrete precast wall 2 lower module, a floor 3 arranged on the bottom side of the concrete precast wall 2 upper module, and a floor 4 arranged on the top side of the concrete precast wall 2 lower module; when the concrete precast wall 2 upper module and the concrete precast wall 2 lower module are aligned, the overlapping steel bars overlap the tensioning mechanisms on the concrete precast wall 2 upper module and the concrete precast wall 2 lower module; a mortar layer 2 is provided between the floor 3 and the floor 4.

[0024] The technical solution of the present invention has the following beneficial effects:

[0025] 1. The steel trusses are installed to reduce the weight of the concrete modules, making them easier to transport and install. At the same time, the presence of the steel frame enhances the strength and rigidity of the prefabricated walls, reducing the problem of wall cracking during module transportation and installation.

[0026] 2. The setting of steel trusses and tensioning mechanisms enables the composite wall to form a self-balancing mechanism during the concrete pouring process, eliminating the need for additional support systems and tensioning bolts, reducing damage to the interior decoration of the box and significantly reducing construction costs and construction period;

[0027] 3. The reinforced trusses act as shear keys during use, effectively enhancing the combined effect of the shear walls and making the composite wall's structural performance equivalent to cast-in-place concrete. The precast walls serve not only as formwork but also as an integral part of the shear walls, significantly reducing the overall weight of the modular structural system and minimizing material waste.

[0028] 4. Before stacking, the steel trusses are combined with the precast concrete walls to form modular walls; the steel trusses enhance the rigidity and strength of the modular walls during transportation and hoisting.

[0029] 5. During pouring, the two prefabricated walls belonging to two different modules are pulled together by a tensioning mechanism, without the need for additional tensioning bolts; the steel truss plays a supporting role, transferring the concrete pouring pressure to the tensioning mechanism, forming a self-balancing system, without the need for a support system;

[0030] 6. During the service phase, the web of the steel truss acts as a tension bar to prevent the vertical steel bars of the shear wall from buckling and breaking when under compression;

[0031] 7. During the use stage, the steel truss webs can effectively combine prefabricated walls and post-cast concrete to enhance the integrity of the composite shear wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic plan view of the composite wall of the present invention;

[0033] Figure 2 for Figure 1 AA section view;

[0034] Figure 3 This is a schematic plan view of the prefabricated wall of the present invention;

[0035] Figure 4 for Figure 3 AA section view;

[0036] Figure 5 for Figure 3 BB cross-section;

[0037] Figure 6 This is a schematic diagram of the structure of the J-shaped hook tension member of the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the round hole reinforcement tie member of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the assembly of two circular hole reinforcement tie members;

[0040] Figure 9 This is a schematic diagram of the structure of the tapered hole puller of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of the tapered head puller of the present invention;

[0042] Figure 11 This is a schematic structural diagram of the assembly of the tapered hole puller and the tapered head puller of the present invention. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0046] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0048] Reference Figures 1 to 11 , the present invention provides a composite shear wall with a steel truss and a tensioning system for concrete modular buildings, comprising: a prefabricated concrete wall 6, a steel truss, and a tensioning mechanism;

[0049] The precast concrete wall 6 includes a precast concrete wall 1 601 and a precast concrete wall 2 602;

[0050] One end of the steel truss is pre-buried in the concrete prefabricated wall 1 601 and the concrete prefabricated wall 2 602 respectively; the pulling mechanism is installed on the steel truss;

[0051] The first precast concrete wall 601 and the second precast concrete wall 602 are tensioned by a tensioning mechanism installed on a steel truss, and concrete 7 is poured;

[0052] The pulling mechanism includes a J-shaped hook pulling member 4, or a round hole bar pulling member 60, or a tapered hole pulling member and a tapered head pulling member 64 that pull each other.

[0053] Furthermore, the steel truss includes two webs 2, an upper chord 3, and two shear wall vertical steel bars 1, which are used in the stage of use. The webs 2 act as tension bars to prevent the shear wall vertical steel bars 1 from buckling and breaking when under pressure, and can effectively combine the precast concrete wall 6 and the post-cast concrete 7 to enhance the integrity of the composite shear wall. One end of each of the two webs 2 is provided with two shear wall vertical steel bars 1 extending outward; the spacing of the steel truss is less than 600mm, ensuring the strength and stiffness of the precast wall during hoisting, transportation, concrete pouring and use, as well as the combined effect of the composite shear wall during use. The steel truss enhances the stiffness and strength of the modular wall during transportation and hoisting projects, and transmits the concrete 7 pouring pressure to the tensioning mechanism to form a self-balancing system, without the need to set up a support system.

[0054] Reference Figures 6 to 11 When the tension mechanism is set as a J-shaped hook tension member 4, the J-shaped hook tension member 4 is connected to the other end of the two web members 2 through the upper chord rod 3; when the tension mechanism is set as a round hole insert bar tension member 60, the round hole insert bar tension member 60 is connected to the other end of the two web members 2 through the upper chord rod 3.

[0055] When the round hole dowel rod tension member 60 is pulled against each other, the dowel rod 61 is correspondingly inserted into the round hole of the round hole dowel rod tension member 60 for fixation; when the pulling mechanism is set as a tapered hole pull member and a tapered head pull member 64 that pull against each other, the tapered hole pull member and the tapered head pull member 64 are respectively connected to the other ends of the two web members 2 through the upper chord 3, and the tapered hole pull member includes a connecting rod and a tapered hole portion installed on the head of the connecting rod; the tapered hole portion includes a channel steel 62 and inclined steel plates 63 installed on both sides of the top of the channel steel 62; a tapered hole is formed between the bottom of the inclined steel plate 63 and the channel steel 62, and under the action of horizontal thrust, the tapered head pull member 64 will be squeezed into the tapered hole of the tapered hole pull member, thereby realizing connection.

[0056] Reference Figure 2, the concrete precast wall 1 601 and the concrete precast wall 2 602 are both pre-embedded with shear wall horizontal steel bars 5; the two shear wall vertical steel bars 1 are fixed corresponding to the shear wall horizontal steel bars 5; the concrete precast wall 1 601 includes a concrete precast wall upper module 601a, a concrete precast wall lower module 601b, a floor 1 arranged on the bottom side of the concrete precast wall upper module 601a, and a floor 2 arranged on the top side of the concrete precast wall lower module 601b; when the concrete precast wall upper module 601a and the concrete precast wall lower module 601b are aligned, the overlapping steel bars 8 overlap the pulling mechanism on the concrete precast wall upper module 601a and the concrete precast wall lower module 601b; a mortar layer 1 is provided between the floor 1 and the floor 2. The concrete precast wall 2 602 includes a concrete precast wall 2 upper module 602a, a concrete precast wall 2 lower module 602b, a floor 3 arranged on the bottom side of the concrete precast wall 2 upper module 602a, and a floor 4 arranged on the top side of the concrete precast wall 2 lower module 602b; when the concrete precast wall 2 upper module 602a and the concrete precast wall 2 lower module 602b are aligned, the overlapping steel bars 8 overlap the pulling mechanism on the concrete precast wall 2 upper module 602a and the concrete precast wall 2 lower module 602b; a mortar layer 2 51 is provided between the floor 3 and the floor 4.

[0057] The working principle of the present invention is as follows:

[0058] 2. During construction:

[0059] 2.1. Install the bottom module concrete prefabricated wall lower module 601b and the second concrete prefabricated wall lower module 602b in place;

[0060] 2.2. Clean the second floor on top of the concrete precast wall lower module 601b and the fourth floor on top of the concrete precast wall second lower module 602b, and lay the mortar layer;

[0061] 2.3. Install the upper module 601a of the left precast concrete wall;

[0062] 2.4, then overlap the steel bars 8;

[0063] 2.5. Install the second upper concrete precast wall module 602a on the right side to complete the connection of the tensioning mechanism. If a tapered hole tensioning system is used, push the second upper concrete precast wall module 602a and the lower concrete precast wall module 601b on the right side to the left, and squeeze the end of the tapered head pull member 64 into the tapered holes of the first upper concrete precast wall module 601a and the lower concrete precast wall module 601b on the left side to complete the connection.

[0064] 2.6. Pour concrete 7 between modules to complete the installation.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A composite shear wall with reinforced steel trusses and tensioning system for concrete modular buildings, characterized in that: include: Precast concrete walls, steel trusses, and tensioning mechanisms; The precast concrete wall comprises a first precast concrete wall and a second precast concrete wall; one end of the steel truss is respectively embedded in the first precast concrete wall and the second precast concrete wall; the tension mechanism is installed on the steel truss; The first prefabricated concrete wall and the second prefabricated concrete wall are tensioned by a tensioning mechanism installed on the steel truss, and concrete is poured; The pulling mechanism includes a J-shaped hook pulling member, or a round hole bar pulling member, or a tapered hole pulling member and a tapered head pulling member that pull each other; The steel truss comprises two web members, an upper chord, and two shear wall vertical steel bars; one end of each of the two web members is provided with two shear wall vertical steel bars extending outwards; When the tensioning mechanism is configured as a J-shaped hook tensioning member, the J-shaped hook tensioning member is connected to the other ends of the two web members via an upper chord; When the tension mechanism is configured as a round hole inserted steel bar tension member, the round hole inserted steel bar tension member is connected to the other ends of the two web members via an upper chord; When the pulling mechanism is configured as a tapered hole pull piece and a tapered head pull piece that pull each other, the tapered hole pull piece and the tapered head pull piece are respectively connected to the other ends of the two web members via the upper chord rod; The tapered hole pull piece includes a connecting rod and a tapered hole portion installed on the head of the connecting rod; the tapered hole portion includes a channel steel and inclined steel plates installed on both sides of the top of the channel steel portion; the bottom of the inclined steel plate forms a tapered hole with the channel steel; Horizontal steel bars of shear walls are pre-embedded in the first and second precast concrete walls; the vertical steel bars of the two shear walls are fixed correspondingly to the horizontal steel bars of the shear walls.

2. The composite shear wall with reinforced steel trusses and tensioning system for concrete modular buildings according to claim 1, characterized in that: The spacing between the steel bar trusses is less than 600 mm.

3. The composite shear wall with steel bar trusses and tensioning system for concrete modular buildings according to claim 1, characterized in that: When the round hole inserted steel bar is pulled against the tension piece, the inserted steel bar is correspondingly inserted into the round hole of the round hole inserted steel bar tension piece for fixing.

4. The composite shear wall with steel bar trusses and tensioning system for concrete modular buildings according to claim 1, characterized in that: The concrete precast wall 1 includes a concrete precast wall upper module, a concrete precast wall lower module, a floor 1 arranged on the bottom side of the concrete precast wall upper module, and a floor 2 arranged on the top side of the concrete precast wall lower module; when the concrete precast wall upper module and the concrete precast wall lower module are aligned, overlapping steel bars overlap the tensioning mechanisms on the concrete precast wall upper module and the concrete precast wall lower module; a mortar layer 1 is provided between the floor 1 and the floor 2.

5. The composite shear wall with steel bar trusses and tension system for concrete modular buildings according to claim 1, characterized in that: The concrete prefabricated wall 2 includes a concrete prefabricated wall 2 upper module, a concrete prefabricated wall 2 lower module, a floor 3 arranged on the bottom side of the concrete prefabricated wall 2 upper module, and a floor 4 arranged on the top side of the concrete prefabricated wall 2 lower module; when the concrete prefabricated wall 2 upper module and the concrete prefabricated wall 2 lower module are aligned, the overlapping steel bars overlap the pulling mechanisms on the concrete prefabricated wall 2 upper module and the concrete prefabricated wall 2 lower module; a mortar layer 2 is provided between the floor 3 and the floor 4.

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