WO2020186857A1 - Structure de liaison placée entre des corps de structure en béton armé préfabriqué et procédé de configuration d'acier d'armature pour des corps de structure en béton armé - Google Patents

Structure de liaison placée entre des corps de structure en béton armé préfabriqué et procédé de configuration d'acier d'armature pour des corps de structure en béton armé Download PDF

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Publication number
WO2020186857A1
WO2020186857A1 PCT/CN2019/126959 CN2019126959W WO2020186857A1 WO 2020186857 A1 WO2020186857 A1 WO 2020186857A1 CN 2019126959 W CN2019126959 W CN 2019126959W WO 2020186857 A1 WO2020186857 A1 WO 2020186857A1
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Prior art keywords
reinforced concrete
spiral
steel
precast
connection
Prior art date
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PCT/CN2019/126959
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English (en)
Chinese (zh)
Inventor
梁惠文
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巴马丹拿建筑及工程师有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201910672802.XA external-priority patent/CN111719709B/zh
Application filed by 巴马丹拿建筑及工程师有限公司 filed Critical 巴马丹拿建筑及工程师有限公司
Priority to SG11201913639UA priority Critical patent/SG11201913639UA/en
Publication of WO2020186857A1 publication Critical patent/WO2020186857A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general

Definitions

  • the present invention relates to a technology for providing a variety of connecting concrete structures, in particular to a connecting technology for various prefabricated or precast elements that can be quickly assembled on site.
  • the column structure includes longitudinal steel bars (for example, metal steel bars), open ties and close ties, which are perpendicular to the longitudinal steel bars and They are arranged at intervals to form a columnar shape.
  • the main purpose of stirrups and braces is to bundle longitudinal steel bars transversely.
  • the columnar structure of common stirrups is cube and cuboid.
  • the closed form of the stirrup is a circular shape.
  • Another alternative to circular closed stirrups is continuous spiral threaded steel bars.
  • continuous spiral rebar has higher strength and ductility than the use of circular closed stirrups.
  • the longitudinal steel bars are mostly restrained by tie bars and closed stirrups, and spiral reinforcement stirrups are not used as restraints or connection prefabs.
  • the conventional precast reinforced concrete structure adopts a steel bar design similar to the cast-in-situ concrete structure, and the longitudinal steel bars are surrounded by ties and closed stirrups.
  • connection details For the practical application of joining two upright prefabricated elements, the traditional connection details include:
  • the disadvantage of the above system lies in the need to build templates and fix steel bars on site, which slows down the construction time. Therefore, how to improve the existing technology of joining concrete structures is needed, especially for building construction, the improved technology that can abandon the on-site construction template and increase the construction speed.
  • the present invention provides a connection structure between prefabricated reinforced concrete structures, which includes a first prefabricated reinforced concrete structure selected from a structure of a wall, a prefabricated component, a column, a beam, a floor or a balcony.
  • the connection structure includes one or more first steel reinforcement connectors embedded along a side part of the first precast reinforced concrete structure.
  • the first reinforcement connectors extend outward from the side of the first precast reinforced concrete structure, periodically A protruding part is formed in each of the outward protruding parts and the side surface of the first prefabricated reinforced concrete structure to form a hole, and the hole is used to receive a connecting element.
  • a second precast concrete structure with similar settings is also provided next to the first precast concrete structure.
  • a rotatable screw-type connecting element is staggered and combined with the cavity of the first reinforcement connector and the cavity of the second reinforcement connector, and the connection is completed by grouting, thereby eliminating the on-site template.
  • the one or more first reinforcing steel connecting pieces and the one or more first reinforcing steel connecting pieces are substantially in a spiral shape, wherein each of the spirally shaped reinforcing steel connecting pieces may include one Or a plurality of steel bars are joined to the connecting piece.
  • the connecting structure further includes an on-site pouring concrete, or grouting into the space between the first precast reinforced concrete structure and the second precast reinforced concrete structure.
  • the one or more first steel bar connectors and the one or more second steel bar connectors are in a continuous W shape, wherein each of the W-shaped steel bar connectors may include one Or a plurality of steel bars are joined to the connecting piece.
  • the one or more first reinforcing bar connectors and the one or more second reinforcing bar connectors respectively include a plurality of sinusoidal or other type periodic protrusions, wherein each of the A plurality of sinusoidal or other periodic protrusions may include one or more steel bars joined to the connecting member.
  • the pitch of the screw connection element is approximately the same length or equal part of the distance between adjacent cavities.
  • connection structure further includes:
  • At least one third precast reinforced concrete structure which is selected from a structure of a wall, component, column, beam, floor, or countertop, the third precast reinforced concrete structure includes:
  • one or more third reinforcement connectors are designed to be partially embedded and partially protrude out of the structure surface periodically.
  • Each of the outward protrusions and the first Three cavities are formed on the sides of the precast reinforced concrete structure, and the cavities are used to receive a connecting element;
  • a rotatable screw-type connecting element is staggeredly combined with the hole of the first steel bar connector, the hole of the second steel bar connector and the hole of the third steel bar connector.
  • a second aspect of the present invention provides a method for arranging steel bars for a precast reinforced concrete structure, which includes welding one or more longitudinal steel bars to the periphery or inner circumference of one or more spiral steel bars to form a spiral steel bar assembly, and placing In structural walls, floors or other structures.
  • connection structure between precast reinforced concrete structures which includes:
  • a first prefabricated reinforced concrete structure selected from a structure of a wall, component, column, beam, floor, or countertop, the structure using the steel bars configured by the method described in the second aspect of the present invention
  • a second prefabricated reinforced concrete structure which is selected from a structure of a wall, component, column, beam, floor or table top, the structure uses the steel bars configured by the method described in the second aspect of the present invention
  • the spiral steel bar component is first placed in the first precast reinforced concrete structure, and after hoisting, the spiral steel bar component placed in the first precast reinforced concrete structure is rotated into the spiral steel bar component placed in the second precast reinforced concrete structure And overlap a spiral connection component with the spiral reinforcement components in the first and second precast reinforced concrete structures.
  • the longitudinal steel bars are connected to the periphery of one or more spiral steel bars by welding or other methods.
  • the longitudinal steel bars are connected to the inner circumference of one or more spiral steel bars by welding or other methods.
  • the diameter of the spiral reinforcement of the spiral connection component is smaller than the diameter of the spiral reinforcement components of the first and second precast reinforced concrete structures, but the pitch is the same, so that the connection component can rotate and move in the spiral reinforcement component.
  • the longitudinal steel bars and spiral steel bars can be replaced by other metal or carbon fiber or other suitable structural material strips.
  • Figure 1A is a top view of a connection structure in an embodiment of the present invention.
  • Figure 1B is a perspective view of a connection structure in an embodiment of the present invention.
  • FIG. 1C shows an enlarged schematic view of the pitch and radius of the spiral reinforcement in an embodiment of the present invention
  • the right part is a schematic side view of the connection structure in an embodiment of the present invention
  • FIG. 2 is a top view (upper left, lower left, and lower right) and a cutaway view (upper right) of the connecting structure in multiple embodiments of the present invention
  • FIG. 3A shows a plan view of a reinforced wall connected with a spiral steel bar combination
  • the lower left is a perspective view showing the spiral steel bar combination for connecting a prefabricated wall surface of the present invention
  • the lower right shows a precast wall connected by a spiral steel bar combination of the present invention
  • Cross-sectional view of the face
  • FIG. 3B shows a side view of the single spiral steel bar connector; the lower part shows the side view and the perspective view of the double spiral steel bar connector;
  • FIG. 3C The upper part of FIG. 3C is a top view of the main spiral reinforcement and the connecting spiral reinforcement in an embodiment of the present invention; the lower part shows the starting and final position when the spiral reinforcement combination is used to connect the wall;
  • FIG. 4 shows the starting and final position of the connecting spiral steel bar in an embodiment of the present invention when connecting two precast slabs; the lower part shows a plan view of a group of precast slabs connected by connecting spiral steel bars. ;
  • Figure 5 shows another embodiment of the present invention inserting spiral steel bars from the top between the W-shaped steel bars on two walls in a rotating manner
  • Figure 6 is an isometric view of the two walls of Figure 5 with spiral reinforcement inserted
  • Figure 7 is a top view or cross-sectional view of the two walls of Figure 5 with spiral reinforcement inserted;
  • Figure 8 is an enlarged view of the two walls of Figure 5 with spiral reinforcement inserted
  • Fig. 9 is a plan view or a cross-sectional view of connecting four walls through the embodiment shown in Fig. 5;
  • Figure 10 shows an embodiment of connecting two prefabricated walls with three spiral steel bars of the present invention
  • Fig. 11 shows an enlarged schematic view of the pitch and radius of the spiral reinforcement in the embodiment of Fig. 10;
  • Fig. 12 shows the three spiral steel bars in the embodiment of Fig. 10 showing a staggered pattern
  • Fig. 13 shows an embodiment of connecting four prefabricated walls with five spiral steel bars of the present invention.
  • Figures 1A, 1B and 1C show the connection diagrams of two prefabricated walls.
  • Figure 1A is a top view of prefabricated walls A and B;
  • Figure 1B is a three-dimensional view of prefabricated walls A and B.
  • the two prefabricated walls can be independent prefabricated panels or side walls of two adjacent prefabricated structural modules. Or, other prefabricated structures such as components, columns, beams, floors or countertops, etc. Structure.
  • Spiral steel reinforcement connectors 1 and 2 are respectively cast on one end of the two precast concrete structures and have the same height as the precast concrete structures.
  • the figure is drawn in a spiral shape. In this case, those skilled in the art know that any connector with a periodic burst pattern is applicable, such as a W shape or a sinusoidal shape.
  • the spiral steel bar connector or other continuous-fired connector extends from the prefabricated wall and forms a continuous cavity on one side of the concrete structure.
  • the geometry of the spiral is defined by its diameter, pitch and direction of rotation.
  • Fig. 1A parts of the spiral steel reinforcement connectors 1 and 2 are exposed at the ends of the two prefabricated walls 6.
  • longitudinal reinforcement 7 for example: Rebar
  • the ends of the two prefabricated walls A and B are set corresponding to each other.
  • the design style of the ends corresponds to the need for connection between the two, and only a space of about 20 mm 3 is formed outside the surface between the ends. gap.
  • a space 5 is formed between the ends of the two prefabricated walls, and the size of the space corresponds to the size required for the third screw connector 4 to be inserted above the ends of the prefabricated wall.
  • the diameter of the third screw connector 4 can be optionally smaller than the spiral steel reinforcement connector 1 and 2 partially cast on the prefabricated wall, so that the third screw connector 4 can be inserted in the space between the two prefabricated walls .
  • the screw connection 4 has the same rotation direction and the same pitch as the screw connection 1 and 2 (however, the screw connection 1 and 2 can have a larger screw pitch, so that it can be used as a screw connection. Larger spacing). It is worth noting that as long as it is a spiral connection piece 4 in any spiral form that can rotate into the spiral reinforcement connection piece 1,2, it is applicable. For the attribute style of the spiral, as long as the spiral connector 4 can be rotated downward and inserted into the hole without obstructing other steel bars, the corresponding direction and pitch of the rotation can be selected.
  • the space 5 between the two prefabricated walls can be selectively sealed by caulking strips or other means, the space 5 is connected by pouring concrete or grouting to complete the structure. It is worth noting that this method does not involve formwork operations and can speed up the construction speed.
  • connection shown in Figure 1 is also suitable for connecting precast reinforced concrete structures with angled junctions. Further, the connection of FIG. 1 can also be applied to the connection of more than two structural bodies, for example, integrating multiple wall elements.
  • the spiral steel bars are exposed from the end of each wall unit. The method of pouring makes the spiral steel bars exposed on the wall not obstruct the insertion of the subsequent spiral connection steel bars; the last spiral connector is inserted into the structure by rotating downwards at the construction site. When the screw connector is inserted to the bottom, the space 5 is completed by pouring concrete or grouting to complete the connection of the structure.
  • connection shown in Figure 1 is that the vertical connection between the two prefabricated walls and other concrete structures does not require formwork. Only the small gap space 3 that needs to be sealed before grouting. What's more, the interlocking spiral steel bars can provide a restriction and increase the strength when the concrete connection is subjected to extrusion and external force.
  • the periodic steel bars poured in the precast unit are bent to a W shape by a continuous steel bar.
  • the steel bars bent to form the W shape 1 are cast in the prefabricated wall units A and B, which are set according to the length of the wall, preferably the same height as the wall.
  • Part of the W-shaped steel bars protrude from the prefabricated wall unit, and the exposed steel bars form multiple spaces 4 with the concrete surface at intervals.
  • the W-shaped steel bar can be welded to form a longitudinal reinforcement (longitudinal reinforcement) in the wall unit to strengthen the anchoring.
  • the screw connector 3 is inserted into the space 6 by rotating downward from the top of the wall. Since the W-shaped steel bar is bent and arranged, the sweeping path of the spiral connector 3 can pass through the space 4 formed by the W-shaped steel bar and concrete. After the screw connector 3 is inserted to the bottom, the space 6 is connected by concrete pouring or grouting.
  • FIG. 2 illustrates the application of multiple connections, which can connect components at different angles, or T-joints. It can be clearly found that this connection method can easily join two or more components, and its advantage is that it does not require a construction site template. It is only necessary to seal the small gap of interval 3 before grouting.
  • a plurality of longitudinal steel bars 2 are welded on the periphery of the spiral steel bar 1 to form a spiral steel bar assembly 3.
  • the spiral steel bar assembly 3 has four longitudinal steel bars 2.
  • the spiral steel bar assembly 3 is poured into the prefabricated wall at a suitable position according to the needs of the structure. Generally speaking, the structure requires more spiral reinforcement components at the end of the wall, and the spacing between the spiral reinforcement components in the middle of the wall can be larger.
  • the multiple longitudinal steel bars 2 of the spiral steel bar assembly 3 will become the main steel bars of the prefabricated wall, which are bundled by the spiral steel bars by welding, so other ties or stirrups are no longer needed to constrain the longitudinal steel bars 2.
  • the prefabricated wall element can be poured by using a removable mold or filling material or other suitable means, as shown in section 1-1 of Figure 3C, so that the cavity 4 of the spiral steel component 3 remains hollow. It will not be filled with concrete.
  • Figure 3B shows two types of spiral reinforcement connectors, which are used to connect preforms.
  • the first type is a single spiral steel bar connector, which welds the longitudinal steel bar 6 to the inner side of a spiral steel bar 5.
  • the second type is a double helix connection.
  • the longitudinal steel bars 10 are placed in two spiral steel bars 8, 9 separated by a rotation angle of 180°, and welded to the inside.
  • the diameter of the connecting piece spiral reinforcement 5 is designed to be slightly smaller than the spiral reinforcement assembly 3, but has the same pitch as the spiral reinforcement assembly 3. Therefore, before hoisting, the spiral connector can be rotated into the bottom of the main spiral cavity 4 of the upper prefabricated wall in a rotating manner as shown in the left picture of FIG.
  • the cavity 4 is aligned with the cavity 4 on the top of the lower precast wall with similar steel structure.
  • the construction staff can insert the tool 8 into the cavity 4 of the upper precast wall, or control the screw connector 5 to rotate downward to move half of the screw connector to the main spiral steel component of the lower precast wall, and then grouting or pouring concrete Fill the hole 4.
  • the overlap of the longitudinal reinforcement 2 and the longitudinal reinforcement 6 of the upper and lower precast walls, and the overlap of the spiral reinforcement 1 and the spiral reinforcement 5 form an effective structural function to transfer the longitudinal reinforcement 2 of the upper and lower precast walls Internal force.
  • the screw connection member 5 further penetrates the connection between the upper and lower prefabricated walls, which can enhance the shear resistance strength of the connection.
  • connection shown in Figures 3A to 3C is that it does not require any formwork, and the spiral steel bar component has provided lateral binding to the longitudinal steel bars, so it can avoid or reduce the stirrup operations that require intensive manpower processing.
  • Spiral steel components can be produced through factory automation, especially by using welding robots.
  • the shear strength of the horizontal joints of walls or columns was weak, because only vertical steel bars were connected.
  • the innovative use of spiral steel bars passing through the joints can enhance the shear strength of the joints and is suitable for use in seismic zones.
  • Figure 4 illustrates the joining of two prefabricated floor slabs, which is essentially similar to joining two prefabricated walls in a horizontal manner to form a slab, with some adjustments.
  • the prefabricated board A and the prefabricated board B are placed next to each other with a small space 1 at a distance of about 20 mm.
  • the spiral connection component includes a spiral steel bar 3 welded with longitudinal steel bars 2.
  • the design is similar to the design of FIG. 3C, and a single screw or double screw connection design can also be used.
  • the edge of the prefabricated floor slab is formed with a plurality of hollow spaces 4 at appropriate intervals 7.
  • Each hollow space 4 is designed to have a large enough space to place the screw connection components.
  • the prefabricated board on one side has a relatively deep hollow space, which is deep enough to temporarily store the screw connection components.
  • a wire 5 or other connecting component is firmly tied to one end of the screw connection, and the other end extends to the gap between the two prefabricated plates.
  • the hollow spaces 4 of the prefabricated board A and the prefabricated board B match and face each other. Pull the wire 5 or other methods to move the screw connector to the opposite prefabricated board.
  • the screw connector 6 is embedded in the two prefabricated plates.
  • the gaps and void spaces are filled with slurry to complete the connection of the structure.
  • the longitudinal reinforcement of the spiral connection component can bear the bending moment at the connection, and the spiral reinforcement will bear the shear force at the connection.
  • the connection shown in Figure 4 does not require any template, only small gaps need to be sealed before grouting.
  • the prefabricated wall A and the prefabricated wall B are connected in a face-to-face manner.
  • the internal faces of the prefabricated walls are set face to face.
  • a plurality of cavities 1 are formed on the inner wall.
  • the cavities 1 are arranged at appropriate intervals.
  • the cavity 1 can be formed by a semicircle or other cross-sectional shapes, and extends vertically along the height of the prefabricated wall.
  • the cavity of prefabricated wall A corresponds to the cavity of prefabricated wall B, and the two cavities face each other to form a continuous passage along the height of the wall.
  • the steel bars bent to the W shape are cast in the aforementioned continuous channel 1 of the precast wall, and some of the bent steel bars extend outside the precast wall.
  • the W-shaped steel bars are firmly anchored in the precast concrete by embedding.
  • W-shaped steel bars can be welded with longitudinal steel bars 3 in the precast wall body.
  • the W-shaped steel bar and the inner wall of the prefabricated wall form a triangular cavity.
  • the properties of the W-shaped steel bar are defined by width and pitch.
  • the spiral steel bars with the same height as the prefabricated wall are inserted into the perforation 2 from the top of the wall in a rotating manner.
  • the pitch of the spiral steel bar is the same as the pitch of the W-shaped steel bar.
  • the diameter of the spiral shape is designed to allow the spiral steel bar to pass through the triangular cavity 2 formed between the exposed steel bar of the W shape and the inner wall of the prefabricated wall.
  • the W-shaped steel bars of the prefabricated wall A and the prefabricated wall B present a staggered form, so that when the spiral steel bars advance downward, the spiral steel bars can pass through all the triangular holes 2 of the two walls. Therefore, the spiral steel bar and the W-shaped steel bar may not touch each other, but they form an interlocking style.
  • the concrete is poured or grouted to the perforation 3 and fill all the cavities.
  • the internal force of the structure can be transmitted from the spiral steel bar to the W-shaped steel bar through the strong concrete or grout.
  • the two prefabricated walls A and B can jointly bear the load of the structure, and their structural performance is equivalent to the cast-in-situ reinforced concrete wall with the combined thickness of the two walls.
  • the new connection method in this case can be used to connect more than two wall surfaces.
  • this embodiment has four wall surfaces A, B, C, and D.
  • Precast wall A and precast wall B are arranged side by side
  • precast wall C and precast wall D are arranged side by side.
  • the prefabricated walls are composite parts of a complete wall surface, which are made through the above-mentioned joining method or other means. At the connection of the four prefabricated walls, it transfers the force of the structure through the spiral reinforcement connector.
  • the perforation can also be any shape that can be formed at the end of the precast wall and filled with grouting.
  • the steel bars bent into a W shape and cast on the end of the wall are produced by the factory, and part of the W-shaped steel bars extend outward into the perforations.
  • the W-shaped steel bars on each wall have the same tooth pitch as the corresponding wall, or a tooth pitch corresponding to a multiple or a fraction of the wall tooth pitch, so as to form a cavity so that the W-shaped steel bars can be connected to each other.
  • the screw pitch of the spiral steel bar connector has the same pitch as the W-shaped steel bar, and is inserted into the continuous channel in a downward rotation actuation manner.
  • the triangular cavity/hole formed by the W-shaped steel bar on the prefabricated wall matches the pitch path of the spiral steel connector. Therefore, the spiral steel bar can smoothly enter the bottom of the wall, so that even though the spiral steel bar and the W-shaped steel bar may not touch each other, the spiral steel bar and the W-shaped steel bar of the four precast walls present an interlocking style.
  • Concrete is poured or grouted into continuous channels and fills up all spaces.
  • the internal force of the structure can penetrate the spiral steel bar and the W-shaped steel bar, thereby effectively connecting the four prefabricated wall structures.
  • Fig. 10 describes a scheme of connecting three spiral structures of the present invention.
  • the cavities 1 are formed on the inner surface of the concrete wall, and according to the structural design requirements, the cavities 1 have an appropriate spacing.
  • the cavity 1 can be semicircular or other shapes, and extends vertically along the height of the prefabricated wall.
  • the precast wall A faces the precast wall B with similar voids to form a continuous channel extending along the wall height.
  • the above-mentioned W-shaped steel bars are replaced by two spiral steel bars 6 which have the same height and are respectively cast on the prefabricated wall, and a part of each spiral extends out of the prefab wall to protrude from the continuous channel .
  • the spiral steel bar is firmly anchored in the precast wall by embedding the precast concrete.
  • the connecting spiral steel bar 7 and the two spiral steel bars 6 are fastened to each other.
  • the properties of the spiral reinforcement are defined by its pitch and diameter.
  • a third spiral steel bar/screw connector 7 with the same height as the wall is inserted into the perforation in a rotating manner from the top of the wall.
  • the spiral steel bar cast on each wall has the same pitch as the third spiral steel bar, or a multiple of the pitch.
  • the third spiral steel bar 7 will not be hindered by the first and second spiral steel bars, and it can penetrate to the bottom of the precast wall in the channel. As shown in FIG. 12, the three spiral steel bars may not necessarily touch each other, but the connecting spiral steel bars 7 and the two spiral steel bars 6 are fastened to each other.
  • Figure 13 shows that the above connection method can connect more than two, such as four walls.
  • Walls A and B are placed face to face, as are walls C and D. Place the ends of A, B, C, and D together.
  • the four prefabricated walls are combined at the joint to form a cavity 8 that can be circular or other suitable shapes.
  • Four sets of spiral steel bars are cast at the end of the wall A, B, C, D at the factory.
  • the part of the spiral steel bar 9 extends outward to protrude into the cavity outside the wall.
  • the four walls are placed together and form a continuous passage along the height of the wall.
  • a spiral steel bar 11 having the same pitch as the spiral steel bar is inserted into the continuous channel in a manner of rotating upward and downward.
  • spiral steel bars 9 cast on the end of the wall are vertically staggered by a distance of 1/4 pitch from the spiral steel bars on the side, so that the spiral steel bars 11 pass downwards and appear staggered but not hindered.
  • the spiral steel connection piece 11 and the four spiral steel bars 9 may not necessarily touch each other, but they will show an interlocking style.
  • Concrete is poured or grouted into continuous channels and fills up all spaces.
  • the internal force of the structure can penetrate between the spiral steel bars, so that the four precast walls are effectively connected structurally.
  • the above-mentioned longitudinal steel bars and spiral steel bars can be replaced by other suitable structural materials such as metal or carbon fiber.

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  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
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Abstract

La présente invention concerne une structure de liaison placée entre des corps de structure en béton armé préfabriqué, comprenant un premier corps de structure en béton armé préfabriqué choisi parmi un corps de structure d'une paroi, un composant, une colonne, une poutre, un plancher ou un plan de travail. Le corps de structure comprend un ou plusieurs premiers éléments de liaison en acier d'armature partiellement intégrés le long d'une surface latérale du premier corps de structure en béton armé préfabriqué et s'étendant au moins en alternance vers l'extérieur le long de la surface latérale du premier corps de structure en béton armé préfabriqué pour former une partie en saillie de telle sorte que les premiers éléments de liaison en acier d'armature sont formés en une structure périodique en saillie. Des parties en saillie vers l'extérieur et la surface latérale du premier corps de structure en béton armé préfabriqué sont formées dans un orifice pour recevoir un élément de liaison. L'invention concerne également un second corps de structure en béton préfabriqué prévu en plus du premier corps de structure en béton préfabriqué et ayant la même configuration. Un élément de liaison en spirale rotatif est combiné en alternance avec l'orifice du premier élément de liaison en acier d'armature et l'orifice du second élément de liaison en acier d'armature , puis la liaison est achevée par injection, ce qui permet d'éliminer un modèle sur site.
PCT/CN2019/126959 2019-03-21 2019-12-20 Structure de liaison placée entre des corps de structure en béton armé préfabriqué et procédé de configuration d'acier d'armature pour des corps de structure en béton armé WO2020186857A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG11201913639UA SG11201913639UA (en) 2019-03-21 2019-12-20 A Joint Located Between Precast Reinforcement Concrete Structures And Reinforcement Arranging Method For Reinforcement Concrete Structure

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201962822024P 2019-03-21 2019-03-21
US62/822,024 2019-03-21
CN201910672802.X 2019-07-24
CN201910672802.XA CN111719709B (zh) 2019-03-21 2019-07-24 一种介于预制钢筋混凝土结构体之间的连接结构及用于该钢筋混凝土结构体的钢筋配置方法
CN201921173309.5 2019-07-24
CN201921173309.5U CN211572006U (zh) 2019-03-21 2019-07-24 预制钢筋混凝土结构体之间的连接结构及螺旋钢筋组件

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN113047507A (zh) * 2021-03-30 2021-06-29 西北民族大学 一种自密实轻质混凝土保温构造柱模壳砌块及其施工方法
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CN113047507A (zh) * 2021-03-30 2021-06-29 西北民族大学 一种自密实轻质混凝土保温构造柱模壳砌块及其施工方法

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