Modularized prefabricated concrete house connecting structure

Abstract

The utility model discloses a modularized prefabricated concrete house connecting structure which comprises a concrete module, a shear-resistant groove, a pre-embedded grouting sleeve, a shear-resistant key, a reserved reinforcing steel bar, a reserved groove and a pre-embedded stirrup, the top face of the pre-embedded concrete module is provided with the downwards-sunken shear-resistant groove, the top of the pre-embedded concrete module is provided with the pre-embedded grouting sleeve, and the shear-resistant key is arranged on the pre-embedded grouting sleeve. The ground of the embedded concrete module is provided with a protruding shear key corresponding to the top face. Aiming at a concrete modular house with high factory integration level, the utility model develops a connecting structure and a construction method which take reverse connection of the grouting sleeve as a main part and wet connection of the shear-resistant keyway, the preformed groove and the pre-embedded stirrup concrete as an auxiliary part, overcomes the defects of the traditional connecting method, simplifies the production process of module components, and improves the construction efficiency. The transportation and installation efficiency of the components is improved, it is guaranteed that the quality is controllable while high-integration-level prefabrication of the prefabricated house is guaranteed, and the economic and technical level of the modular prefabricated concrete house is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled building construction, and in particular relates to a modular prefabricated concrete house connection structure. Background Art

[0002] The traditional connection methods of modular prefabricated concrete houses mainly include bolt connection, wet joint reinforced concrete connection and post-tensioned prestressed connection. Bolt connection is convenient to construct, but the connection part requires high precision, the exposed metal of the joint needs to be treated with anti-corrosion, and the horizontal and vertical deformation is not easy to recover; the on-site installation process of wet joint reinforced concrete connection is complicated, it is not easy to make a high-integration module, and the quality is difficult to inspect due to conditions; the post-tensioned prestressed connection method has high requirements for the production and installation precision of prefabricated components, and the post-tensioned prestressed tendon laying, tensioning, anchoring and grouting construction level is highly professional and demanding.

[0003] The utility model aims at concrete modular houses with high factory integration, and develops a connection structure and construction method which mainly uses reverse connection of grouting sleeves, and supplemented by shear key groove connection, reserved groove and pre-embedded stirrup concrete wet connection. The utility model overcomes the shortcomings of traditional connection methods, simplifies the production process of modular components, improves the efficiency of component transportation and installation, ensures the quality control of prefabricated houses with high integration, greatly improves the economic and technical level of modular prefabricated concrete houses, and has good development prospects. Utility Model Content

[0004] The purpose of the utility model is to provide a modular prefabricated concrete house connection structure, aiming to solve the problems existing in the background technology. To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A modular prefabricated concrete house connection structure comprises a concrete module, a shear groove, a pre-embedded grouting sleeve, a shear key, a reserved steel bar, a reserved groove and a pre-embedded stirrup, wherein the top surface of the pre-embedded concrete module is provided with a downwardly recessed shear groove, the top of the pre-embedded concrete module is provided with a pre-embedded grouting sleeve, the ground of the pre-embedded concrete module is provided with a protruding shear key corresponding to the top surface, the bottom surface of the concrete module is provided with an embedded steel bar corresponding to the pre-embedded grouting sleeve, the top and side of the concrete module are provided with a reserved groove horizontally or vertically, and the interior of the reserved groove is provided with the embedded stirrup.

[0006] Preferably, the concrete module is a pentahedron, and the concrete module is composed of four walls and a bottom floor. The four walls can have doors, windows, and openings according to functional requirements, and can be simplified into wall limbs, lintels, etc. The bottom plate of the upper module is the top plate of the lower module, and the roof is manufactured and installed separately. The module can be decorated and installed in the factory as needed, and mechanical and electrical pipelines, doors and windows, external insulation, waterproofing and other materials can be installed. After the modules are connected to form a complete house, the decoration and installation work left at the connection parts will be supplemented on site.

[0007] Preferably, the shear groove is cross-shaped and is arranged in the middle of the wall width direction of the concrete module. The position of the shear groove coincides with the position of the grouting sleeve. The number, length, width and height of the shear keys are determined according to design calculations.

[0008] Preferably, the grouting sleeve is a full-grouting or half-grouting sleeve, the opening of the grouting sleeve faces upward, the embedded steel bars are buried in the component wall, the opening of the grouting sleeve is 50 mm lower than the top surface of the wall, the grouting sleeve coincides with the center of the shear groove, and its model, quantity, position, and protruding length are determined by design calculations. The reserved upper sleeve and the protruding lower steel bars in the same module may or may not correspond.

[0009] Preferably, the shear key is arranged at the bottom of the wall of the concrete module, and the shear key is matched with the shear groove.

[0010] Preferably, the reserved groove is arranged on the top / around the concrete module, the reserved groove arranged on the top of the concrete module is rectangular, the reserved groove arranged around the concrete module is semicircular, the height of the reserved groove is 500-1000mm, the shape of the reserved groove is semicircular, 1 / 3 circular, 1 / 4 circular, rectangular or other shapes, and the specific size, position and shape of the reserved groove are determined by the design.

[0011] Preferably, the shapes of the reserved stirrups are semicircular, 1 / 3 circular, 1 / 4 circular and rectangular, and the exposed length of the reserved stirrups does not exceed the module end face. The specific position, size, quantity, spacing and shape are determined by the design.

[0012] A construction method of a modular prefabricated concrete house, comprising any of the above modular prefabricated concrete house connection structures, and comprising the following steps

[0013] (1) Install the lower left and lower right modules first, align the reserved grooves on the wall, and place the connecting steel bars;

[0014] (2) Then seal the gap outside the reserved groove, pour filling material into the reserved groove, generally fine stone concrete, and after reaching a certain strength, prepare to install the upper left and upper right modules;

[0015] (3) First, fill the grouting sleeves of the lower left and lower right modules with filling material, usually high-strength grouting material;

[0016] (4) Then lay a layer of filling material in the shear groove, which is generally high-strength mortar or high-strength grouting material;

[0017] (5) Then hoist the upper left module so that the reserved steel bars at the bottom of the upper left module are inserted into the grouting sleeve of the lower left module. At this time, the shear key at the bottom of the upper left module is also embedded in the shear groove of the lower left module.

[0018] (6) Similarly, hoist the upper right module so that the reserved steel bars at the bottom of the upper right module are inserted into the grouting sleeve of the lower right module. At this time, the shear key at the bottom of the upper right module is also embedded in the shear groove of the lower right module.

[0019] (7) Align the reserved grooves of the upper left and upper right modules, then place the connecting steel bars and connect the embedded stirrups of the adjacent modules;

[0020] (8) Seal the gap outside the reserved groove and pour in filling material, generally fine stone concrete, so that the longitudinal and horizontal reserved grooves are completely filled with fine stone concrete, vibrate and compact it, and continue to install the upper module after reaching the design strength.

[0021] (9) Preferably, the filling material is high-strength grouting material, high-strength mortar and fine stone concrete. The reserved steel bars are connected to the grouting sleeves with high-strength grouting material, the shear keys and grooves are connected with high-strength mortar, and the reserved grooves are filled with fine stone concrete. The filling material should have good fluidity and strength requirements.

[0022] Preferably, the connecting steel bars are arranged in the reserved grooves and cooperated with the embedded stirrups to connect the two adjacent modules. Generally, spiral bars are used for connection. Stirrups plus longitudinal straight bars can also be used for connection. When spiral bars are used to connect the left and right modules, the positions of the reserved stirrups of the left and right modules need to be staggered. When stirrups plus longitudinal straight bars are used for connection, the positions of the reserved stirrups of the left and right modules need to correspond one to one.

[0023] Preferably, the filling materials include high-strength grouting material, high-strength mortar and fine stone concrete. The reserved steel bar is connected to the grouting sleeve with high-strength grouting material, the shear key and the groove are connected with high-strength mortar, and the reserved groove is filled with fine stone concrete. The filling materials should have good fluidity and strength requirements. The 1-3 day compressive strength of the grouting material is generally above 30-50Mpa, the mortar expansion is generally above 220mm, and the 28-day compressive strength is above 80Mpa; the slump of fine stone concrete is generally above 250mm, the expansion is above 600mm, and the 28-day compressive strength is above 50Mpa.

[0024] Preferably, the connection structure can add reinforcement configuration in one direction, two directions or three directions at the corner where the modules are combined according to design calculations, and the anchorage length, diameter and number of reinforcement are determined by design calculations.

[0025] Beneficial effects of the utility model:

[0026] 1. Compared with bolt connection, the structural connection of the utility model is safe and reliable, with reasonable design, no subsequent node maintenance work, and more convenient for component transportation and lifting;

[0027] 2. Compared with wet joint reinforced concrete connection, the utility model has a simpler process, effectively improves installation efficiency, reduces on-site manual work, and at the same time ensures quality, which is convenient for inspection and acceptance;

[0028] 3. Compared with the post-tensioned prestressed connection, the utility model greatly reduces the on-site manual operation process, is convenient to install, and effectively improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of a modular prefabricated concrete house in the utility model;

[0030] Figure 2 It is a partial view of a modular prefabricated concrete house in the utility model;

[0031] Figure 3 It is a left view of the modular prefabricated concrete house in the utility model;

[0032] Figure 4 It is a front view of a modular prefabricated concrete house in the utility model;

[0033] Figure 5 It is a top view of a modular prefabricated concrete house in the utility model;

[0034] Figure 6 It is a partial view of the shear groove and embedded stirrups in the utility model;

[0035] Figure 7 It is a schematic diagram of the connection of modular prefabricated concrete houses in the utility model;

[0036] Figure 8 It is a left view of the modular prefabricated concrete house connection in the utility model;

[0037] Fig. 9 This is a large-scale drawing of the connection node at the horizontal reserved groove in the utility model;

[0038] Fig.10 It is a top view of the modular prefabricated concrete house connection in the utility model;

[0039] Fig.11It is a large-scale drawing of the connection node at the longitudinal reserved groove in the utility model;

[0040] Fig.12 It is a cross-sectional view of the connection of modular prefabricated concrete houses in the utility model;

[0041] Fig.13 It is a large-scale drawing of the shear keyway connection node in the utility model.

[0042] Among them, the reference numerals in the figure are:

[0043] 1. Concrete module; 2. Shear groove; 3. Grouting sleeve; 4. Shear key; 5. Reserved steel bars; 6. Reserved groove; 7. Embedded stirrups. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0047] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0048] like Figures 1 to 13As shown, an embodiment of the utility model provides a modular prefabricated concrete house connection structure, including a concrete module 1, a shear groove 2, an embedded grouting sleeve 3, a shear key 4, a reserved steel bar 5, a reserved groove 6 and an embedded stirrup 7. The top surface of the embedded concrete module 1 is provided with a downwardly recessed shear groove 2, the top of the embedded concrete module 1 is provided with a pre-embedded grouting sleeve 3, the ground of the embedded concrete module 1 is provided with a shear key 4 protruding corresponding to the top surface, the bottom surface of the concrete module 1 is provided with embedded steel bars corresponding to the pre-embedded grouting sleeve 3, the top and side of the concrete module 1 are provided with a reserved groove 6 horizontally or longitudinally, and the inside of the reserved groove 6 is provided with an embedded stirrup 7.

[0049] In the embodiment, the concrete module 1 is a pentahedron, and the concrete module 1 is composed of four walls and a bottom floor. The four walls can have doors, windows, and openings according to functional requirements, and can be simplified into wall limbs, lintels, etc. The bottom plate of the upper module is the top plate of the lower module, and the roof is made and installed separately. The module can be decorated and installed in the factory as needed, and mechanical and electrical pipelines, doors and windows, external insulation, waterproofing and other materials can be installed. After the modules are connected to form a complete house, the decoration and installation work left at the connection parts will be supplemented on site.

[0050] In the embodiment, the shear groove 2 is cross-shaped and is arranged in the middle of the wall width direction of the concrete module 1. The position of the shear groove 2 coincides with the position of the grouting sleeve 3. The number, length, width and height of the shear keys 4 are determined according to design calculations.

[0051] In the embodiment, the grouting sleeve 3 is a full grouting or half grouting sleeve 3, the opening of the grouting sleeve 3 is upward, the embedded steel bars are embedded in the component wall, the opening of the grouting sleeve 3 is 50 mm lower than the top surface of the wall, the grouting sleeve 3 coincides with the center of the shear groove 2, and its model, quantity, position, and extended length are determined by design calculations. The upper sleeve and the lower extended steel bars reserved in the same module may correspond or not.

[0052] In the embodiment, the shear key 4 is arranged at the bottom of the wall of the concrete module 1 , and the shear key 4 is matched with the shear groove 2 .

[0053] In the embodiment, the reserved groove 6 is arranged on the top / around the concrete module 1, the reserved groove 6 is arranged on the top of the concrete module 1 and is rectangular, the reserved groove 6 is arranged around the concrete module 1 and is semicircular, the height of the reserved groove 6 is 500-1000mm, and the shape of the reserved groove 6 is semicircular, 1 / 3 circular, 1 / 4 circular, rectangular or other shapes. The specific size, position and shape of the reserved groove 6 are determined by the design.

[0054] In the embodiment, the shapes of the reserved stirrups are semicircular, 1 / 3 circular, 1 / 4 circular and rectangular, and the exposed length of the reserved stirrups does not exceed the module end face. The specific position, size, quantity, spacing and shape are determined by the design.

[0055] A construction method of a modular prefabricated concrete house, comprising any of the above modular prefabricated concrete house connection structures, and comprising the following steps

[0056] (1) Install the lower left and lower right modules first, align the reserved groove 6 on the wall, and place the connecting steel bars;

[0057] (2) Then seal the gap outside the reserved groove 6, pour filling material into the reserved groove 6, generally fine stone concrete, and after reaching a certain strength, prepare to install the upper left and upper right modules;

[0058] (3) First, fill the grouting sleeves 3 of the lower left and lower right modules with filling material, generally high-strength grouting material;

[0059] (4) Laying a layer of filling material in the shear groove 2, generally high-strength mortar, or high-strength grouting material;

[0060] (5) Then hoist the upper left module so that the reserved steel bar 5 at the bottom of the upper left module is inserted into the grouting sleeve 3 of the lower left module. At this time, the shear key 4 at the bottom of the upper left module is also embedded in the shear groove 2 of the lower left module;

[0061] (6) Similarly, hoist the upper right module so that the reserved steel bars 5 at the bottom of the upper right module are inserted into the grouting sleeve 3 of the lower right module. At this time, the shear key 4 at the bottom of the upper right module is also embedded in the shear groove 2 of the lower right module.

[0062] (7) Align the reserved grooves 6 of the upper left and upper right modules, then place connecting steel bars and connect the embedded stirrups 7 of adjacent modules;

[0063] (8) Seal the gap outside the reserved groove 6 and pour in filling material, generally fine stone concrete, so that the longitudinal and horizontal reserved grooves 6 are completely filled with fine stone concrete, vibrate and compact it, and continue to install the upper module after reaching the designed strength.

[0064] In the embodiment, the filling materials are high-strength grouting material, high-strength mortar and fine stone concrete. The reserved steel bar 5 is connected to the grouting sleeve 3 with high-strength grouting material, the shear key 4 and the groove are connected with high-strength mortar, and the reserved groove 6 is filled with fine stone concrete. The filling material should have good fluidity and strength requirements.

[0065] In the embodiment, the connecting steel bars are arranged in the reserved grooves and cooperated with the embedded stirrups to connect the two adjacent modules. Generally, spiral bars are used for connection. Stirrups plus longitudinal straight bars can also be used for connection. When spiral bars are used to connect the left and right modules, the positions of the reserved stirrups of the left and right modules need to be staggered. When stirrups plus longitudinal straight bars are used for connection, the positions of the reserved stirrups of the left and right modules need to correspond one to one.

[0066] In the embodiment, the filling materials include high-strength grouting material, high-strength mortar and fine stone concrete. The reserved steel bar is connected to the grouting sleeve with high-strength grouting material, the shear key and the groove are connected with high-strength mortar, and the reserved groove is filled with fine stone concrete. The filling materials should have good fluidity and strength requirements. The 1-3 day compressive strength of the grouting material is generally above 30-50Mpa, the mortar expansion is generally above 220mm, and the 28-day compressive strength is above 80Mpa; the slump of fine stone concrete is generally above 250mm, the expansion is above 600mm, and the 28-day compressive strength is above 50Mpa.

[0067] In the embodiment, the connection structure may increase the steel bar configuration in one direction, two directions or three directions at the corner where the modules are combined according to the design calculation, and the anchorage length, steel bar diameter and quantity are determined by the design calculation.

[0068] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A modular prefabricated concrete house connection structure, characterized in that: It includes a concrete module, a shear groove, an embedded grouting sleeve, a shear key, a reserved steel bar, a reserved groove and an embedded stirrup. The top surface of the concrete module is provided with a downwardly recessed shear groove, the top of the concrete module is provided with a pre-embedded grouting sleeve, the ground of the concrete module is provided with a shear key protruding corresponding to the top surface, the bottom surface of the concrete module is provided with embedded steel bars corresponding to the pre-embedded grouting sleeve, the top and side of the concrete module are provided with the reserved groove horizontally or longitudinally, and the embedded stirrup is provided inside the reserved groove.

2. A modular prefabricated concrete house connection structure according to claim 1, characterized in that: The concrete module is a pentahedron, and the concrete module consists of four walls and a bottom floor.

3. A modular prefabricated concrete house connection structure according to claim 2, characterized in that: The shear groove is cross-shaped and is arranged in the middle of the wall width direction of the concrete module. The shear groove coincides with the position of the grouting sleeve.

4. The modular prefabricated concrete house connection structure according to claim 3, characterized in that: The grouting sleeve is a full grouting or half grouting sleeve, the opening of the grouting sleeve is upward, the embedded steel bars are embedded in the component wall, the opening of the grouting sleeve is 50 mm lower than the top surface of the wall, and the grouting sleeve coincides with the center of the shear groove.

5. The modular prefabricated concrete house connection structure according to claim 4, characterized in that: The shear key is arranged at the bottom of the wall of the concrete module, and the shear key is matched with the shear groove.

6. The modular prefabricated concrete house connection structure according to claim 5, characterized in that: The reserved groove is arranged on the top / around the concrete module. The reserved groove is arranged on the top of the concrete module in a rectangular shape. The reserved groove is arranged around the concrete module in a semicircular shape. The height of the reserved groove is 500-1000mm. The shape of the reserved groove is semicircular, 1 / 3 circular, 1 / 4 circular and rectangular.

7. A modular prefabricated concrete house connection structure according to claim 5 or 6, characterized in that: The shapes of the embedded stirrups are semicircular, 1 / 3 circular, 1 / 4 circular and rectangular.

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