Height-adjustable precast beam support-free mounting device and support-free mounting precast beam column joint

Abstract

The utility model discloses a height-adjustable precast beam support-free installation device and a precast beam column joint installed by adopting the same, and aims to solve the problems that an existing precast beam support-free installation height-adjustable device is complex in connection mode and inconvenient to disassemble and assemble. The device comprises an embedded sleeve, a horizontal supporting rod piece, a main supporting piece and a piston supporting piece. The embedded sleeve is horizontally embedded in the prefabricated column, the horizontal supporting rod piece is inserted into the embedded sleeve, a certain length is reserved outside the embedded sleeve, the main supporting piece is horizontally erected on the reserved part of the horizontal supporting rod piece, the piston supporting piece vertically abuts against the bottom of the prefabricated beam and the upper surface of the main supporting piece, and the installation elevation of the prefabricated beam is positioned by adjusting the height of the piston supporting piece. And after concrete of the beam-column joint to be prefabricated is poured and reaches the strength, the piston supporting piece and the main supporting piece are taken down, then the horizontal supporting rod piece is drawn, and installation construction is completed. The device is simple in connection form and convenient and fast to disassemble and assemble, and the construction efficiency of the fabricated building is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled building construction, in particular to a height-adjustable prefabricated beam support-free installation device and a support-free installation prefabricated beam-column node. Background Art

[0002] The support-free system of prefabricated buildings is an innovative construction technology that aims to improve construction efficiency, reduce construction costs, and improve the overall performance of the building. The core of this system is to optimize the structural design and construction process, so that the construction of the building can be completed without additional support. In this technical field, the adjustable height prefabricated beam support-free installation device can accurately locate the installation elevation of the prefabricated beam during construction, further improving the construction flexibility and installation accuracy. However, the existing adjustable height prefabricated beam support-free installation device and prefabricated columns are mostly fixedly connected, which has a complex connection method, is inconvenient to disassemble and assemble, and has high requirements for construction operations. It is urgently needed to be redesigned to improve construction efficiency. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide an adjustable height prefabricated beam support-free installation device and a support-free installation prefabricated beam-column node. Under the premise of being able to accurately locate the installation elevation of the prefabricated beam, the advantages of no need for fixed connection between components, simple connection form, and convenient and quick disassembly and assembly are achieved to improve construction efficiency.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The adjustable height prefabricated beam support-free installation device includes: an embedded sleeve, a horizontal support rod, a main support member and a piston support member; the embedded sleeve is horizontally embedded in the prefabricated column, the horizontal support rod is inserted into the embedded sleeve and a certain length is left outside, the main support member is horizontally mounted on the remaining part of the horizontal support rod, the piston support member vertically abuts the bottom of the prefabricated beam and the upper surface of the main support member, and the installation elevation of the prefabricated beam is positioned by adjusting the height of the piston support member.

[0006] In a preferred embodiment, the embedded sleeve is a PVC embedded sleeve with an inner diameter of 30 mm.

[0007] In a preferred embodiment, the horizontal supporting rod is made of a steel core rod with a steel bar diameter of 25 mm and an outer length of 25 cm.

[0008] In a preferred embodiment, the main support member is made of I14 I-beam with a length of 1m.

[0009] In a preferred embodiment, the piston support is an iron sand cylinder.

[0010] The present invention also provides a support-free installation prefabricated beam-column node, comprising a prefabricated column and a prefabricated beam; the prefabricated beam is horizontally arranged, and both ends of the prefabricated beam are connected and installed with the prefabricated column through the support-free installation device.

[0011] In a specific embodiment, if two adjacent column surfaces of the prefabricated column need to be installed with prefabricated beams, the support-free installation devices corresponding to the two column surfaces are staggered in height.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The prefabricated beam support-free installation device realizes stable support and elevation adjustment through simple overlap between components. On the premise of improving the construction flexibility and installation quality of prefabricated beams, the device has a simple connection form, is convenient and quick to disassemble and assemble, and improves the overall construction efficiency of prefabricated buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the preferred embodiments.

[0015] Figure 1 It is a front view of the support-free installation device for prefabricated beams of the preferred embodiment of the utility model;

[0016] Figure 2 It is a side view of the support-free installation device for prefabricated beams of the preferred embodiment of the utility model;

[0017] Figure 3 It is a spatial entity schematic diagram of the support-free installation of prefabricated beam-column nodes in the preferred embodiment of the utility model.

[0018] The accompanying drawings are marked as follows:

[0019] 2-prefabricated column, 3-prefabricated beam, 4-PVC embedded sleeve, 5-steel core rod, 6-I-beam, 7-sand cylinder. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present invention clearer and easier to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the preferred embodiments.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "installation / connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] There is a prefabricated beam-column node for support-free installation, comprising a prefabricated column and a prefabricated beam; the prefabricated beam is arranged horizontally, and both ends are connected and installed with the prefabricated column through an adjustable support-free installation device. The support-free installation device comprises: an embedded sleeve, a horizontal support rod, a main support member and a piston support member.

[0024] This article will describe the technical solution of the device in detail in combination with the construction steps of the preferred embodiment. Correspondingly, in this preferred embodiment, the embedded sleeve adopts PVC embedded sleeve 4, the horizontal support rod adopts steel core rod 5, the main support adopts I-beam 6, and the piston support adopts sand cylinder 7.

[0025] like Figure 1 As shown, during the pouring construction of the prefabricated column 2, two or more PVC pre-buried sleeves 4 are horizontally pre-buried at the designated position at the top of the column, and each sleeve is located at the same elevation. In this embodiment, the inner diameter of the sleeve is preferably 30 mm.

[0026] After the prefabricated column 2 reaches the required strength and is positioned vertically at the construction site, the steel core rod 5 is inserted into the PVC embedded sleeve 4, and a length of about 25 cm is left outside. In this embodiment, the steel core rod 5 is preferably a plain round steel bar with a diameter of 25 mm.

[0027] like Figure 2 As shown, the I-beam 6 is placed horizontally on the outer portion of the steel mandrel 5 and is kept horizontal by fine adjustment. In this embodiment, the I-beam model is preferably I14 and the length is preferably 1m.

[0028] The inner diameter of the PVC embedded casing 4, the steel bar diameter of the steel core rod 5, and the type and horizontal length of the I-beam 6 can be adjusted according to the actual project conditions. In particular, the steel bar diameter of the selected steel core rod 5 is not more than 5 mm different from the inner diameter of the embedded casing 4, which avoids the steel core rod from having a large tilt angle under subsequent vertical force, causing the I-beam supported by it to slip.

[0029] Fill two or more sand cylinders 7 with sand and compact them, and place them on the upper surface of the I-beam 6. The sand cylinders are placed symmetrically and at equal intervals. Perform preliminary sand unloading on the sand cylinders 7 so that the top elevation is slightly higher than the design elevation of the bottom of the precast beam 3.

[0030] The precast beam 3 is hoisted horizontally so that its end rests on the sand cylinder 7; the installation angle of the precast beam 3 is adjusted according to the design requirements of the drawings, and the position of the sand cylinder 7 is fine-tuned so that the upper and lower ends of each sand cylinder fully abut against the bottom of the precast beam 3 and the upper surface of the I-beam 6. The height of each sand cylinder 7 is adjusted by further unloading sand so that the elevation of the precast beam 3 meets the design requirements of the drawings.

[0031] The precast beam 3 is connected and fixed to the precast column 2, and concrete is poured at the precast beam-column joint;

[0032] After the concrete at the beam-column joint reaches a certain strength, the sand cylinder 7 and the I-beam 6 are removed in turn, and then the steel core rod 5 is extracted, and the installation construction is completed.

[0033] like Figure 3 As shown, if two adjacent surfaces of the prefabricated column 2 need to be installed with prefabricated beams 3, in order to avoid the conflict of the positions of the structural devices on the two surfaces, the support-free installation structural devices corresponding to the two surfaces are staggered in height.

[0034] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A height-adjustable prefabricated beam support-free installation device, characterized in that: It includes an embedded sleeve, a horizontal supporting rod, a main supporting member and a piston supporting member; the embedded sleeve is horizontally embedded in the prefabricated column, the horizontal supporting rod is inserted into the embedded sleeve and a certain length is left outside, the main supporting member is horizontally erected on the remaining part of the horizontal supporting rod, the piston supporting member vertically abuts the bottom of the prefabricated beam and the upper surface of the main supporting member, and the installation elevation of the prefabricated beam is positioned by adjusting the height of the piston supporting member.

2. The height-adjustable prefabricated beam support-free installation device according to claim 1, characterized in that: The embedded sleeve is made of PVC and has an inner diameter of 30 mm.

3. The height-adjustable prefabricated beam support-free installation device according to claim 1, characterized in that: The horizontal supporting rod is a steel core rod with a steel bar diameter of 25 mm and an outer length of 25 cm.

4. The height-adjustable prefabricated beam support-free installation device according to claim 1, characterized in that: The main support is I14 I-beam with a length of 1m.

5. The height-adjustable prefabricated beam support-free installation device according to claim 1, characterized in that: The piston support is an iron sand cylinder.

6. A prefabricated beam-column node for supporting and installing without support, characterized in that: It comprises prefabricated columns and prefabricated beams; the prefabricated beams are arranged horizontally, and both ends of the prefabricated beams are connected and installed with the prefabricated columns through the support-free installation device described in any one of claims 1-5.

7. The support-free installation prefabricated beam-column node according to claim 6, characterized in that: If two adjacent column surfaces of the prefabricated column need to be installed with prefabricated beams, the support-free installation devices corresponding to the two column surfaces are staggered in height.

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