Hoisting structure of precast concrete external wall panel

Abstract

The utility model relates to a hoisting structure of prefabricated concrete external hanging wallboard, its characterized in that: including prefabricated concrete external hanging wallboard and at least one back ridge of installation setting along prefabricated concrete external hanging wallboard front length direction, the back ridge includes long strip shape section steel and the several hole grooves of being located on long strip shape section steel, the hole groove is equipped with the bolt to with prefabricated concrete external hanging wallboard front on the bolt slot of preset fastening connection. This prefabricated concrete external hanging wallboard's hoisting structure design is reasonable, can temporarily reinforce component strength in the process of lifting vertical board, possesses stronger applicability and economy.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated wall panel construction in prefabricated buildings, and in particular to a hoisting structure for ultra-long prefabricated concrete external wall panels. Background Technology

[0002] With the vigorous development of industrialized construction in my country, precast wall panels have been widely used in prefabricated building construction due to their advantages such as high degree of factory and mechanized construction, reduced on-site wet work, and labor savings. In recent years, in particular, the design and construction of ultra-long precast external wall panels have become increasingly common in the facades of industrial plants and commercial complexes with high single-story heights, offering advantages such as rapid construction, integrated molding, and good energy efficiency. Currently, the height of ultra-long precast external concrete wall panels in the industry generally reaches 6-8 meters or more.

[0003] As a crucial part of prefabricated construction, hoisting is integrated into all aspects of prefabricated engineering. In actual projects, due to limitations in the production and transportation of extra-long external wall panels, these panels are often stored and transported by being placed horizontally and stacked along their length (height). At the construction site, the flat wall panels are lifted from one end and erected using the other end as a fulcrum (referred to as lifting and erecting the panels). Then, the wall panels are hoisted and installed along the height of the facade.

[0004] Due to the large length and weight of the precast wall panels, during the lifting and erection process, the wall panel components are subject to bending moment and lifting stress, making them prone to excessive deflection, structural cracking, and other quality defects.

[0005] To avoid quality defects caused by the lifting and erection of the wall panels, the traditional approach is to reinforce the extra-long external wall panel components with structural steel bars. This not only increases the cost and weight of the components, but also has no substantial positive effect on the structure itself after the components are installed. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a hoisting structure for precast concrete external wall panels. The hoisting structure of the precast concrete external wall panels is reasonably designed and can temporarily strengthen the strength of the components during the hoisting and erection of the panels, and has strong applicability and economy.

[0007] This utility model is achieved through the following technical solution:

[0008] The hoisting structure of the precast concrete exterior wall panel of this utility model is characterized by: including a precast concrete exterior wall panel and at least one back rib installed along the length of the front of the precast concrete exterior wall panel. The back rib includes a long strip steel and a number of holes and slots on the long strip steel. Bolts are inserted in the holes and slots to be fastened to the bolt slots preset on the front of the precast concrete exterior wall panel.

[0009] Preferably, the above-mentioned slot is a long strip milled slot.

[0010] Preferably, the above-mentioned long strip steel is a U-shaped channel steel, and the holes and slots are provided on the bottom plate of the U-shaped channel steel.

[0011] Preferably, the above-mentioned long strip steel is a square steel with a rectangular cross-section, and the holes and slots penetrate the upper and lower wall plates of the square steel.

[0012] Preferably, the above-mentioned long strip steel is an I-beam, and the slots are provided on the bottom flange of the I-beam.

[0013] Preferably, the bolts mentioned above are eye bolts or T-bolts.

[0014] Preferably, the length of the aforementioned elongated steel section is more than three-quarters the length of the precast concrete exterior wall panel.

[0015] Preferably, the precast concrete exterior wall panel has two back ribs spaced apart along its front length.

[0016] Preferably, the ends of the aforementioned precast concrete exterior wall panels are provided with hanging bolt slots.

[0017] The working method of the hoisting structure for precast concrete exterior wall panels of this utility model involves placing the precast concrete exterior wall panel flat on the ground, laying a long strip of steel on the front of the precast concrete exterior wall panel, and using bolts to pass through the holes and slots and tighten them into the pre-set bolt slots on the front of the precast concrete exterior wall panel to fix the long strip of steel to the precast concrete exterior wall panel. Then, the subsequent lifting and erection of the panel is carried out. Because the long strip of steel is temporarily fixed to the front of the precast concrete exterior wall panel, it helps to enhance the bending resistance of the precast concrete exterior wall panel and avoids problems such as deflection deformation or structural cracking during the lifting and erection process. Furthermore, since the long strip of steel is temporarily fixed, it can be reused after disassembly, thus not increasing the cost of the precast concrete exterior wall panel and saving costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a side view sectional structural schematic diagram of this utility model;

[0020] Figure 3 This is a schematic diagram of the main view of the back rib structure;

[0021] Figure 4 yes Figure 1 A schematic diagram of the local structure;

[0022] Figure 5 yes Figure 2 A schematic diagram of the local structure;

[0023] Figure 6 yes Figure 3 A schematic diagram of the local structure;

[0024] Figure 7 This is a cross-sectional view of an example of a long strip steel section being a U-shaped channel steel.

[0025] Figure 8 This is a cross-sectional view of an example where the long strip steel is replaced with square steel. Detailed Implementation

[0026] The present invention will be further explained below with reference to specific embodiments and accompanying drawings.

[0027] The hoisting structure of the precast concrete exterior wall panel of this utility model includes a precast concrete exterior wall panel 1 and at least one back rib 2 installed along the length of the front of the precast concrete exterior wall panel 1. Preferably, two or three back ribs 2 are spaced apart along the length of the front of the precast concrete exterior wall panel, and the two or three back ribs 2 divide the width of the front of the precast concrete exterior wall panel into three or four equal parts.

[0028] The back rib 2 includes a long strip steel 201 and several holes and slots 202 provided on the long strip steel. Bolts 3 are inserted in the holes and slots 202 to be fastened to the bolt slots 101 (i.e. threaded holes) on the front of the precast concrete exterior wall panel. The bolt slots 101 can be formed by pre-embedding a nut sleeve with internal threads.

[0029] To overcome the slight deviation in the position of the preset bolt slot 101, the slot 202 is a long strip milled slot or a racetrack-shaped milled slot. Of course, the slot 202 can also be a round hole. The slot 202 can be drilled with a drill bit or milled with a milling cutter.

[0030] The bolts mentioned above can be eye bolts or T-bolts, etc.

[0031] One embodiment is that the long strip steel is a U-shaped channel steel (such as 18#b hot-rolled ordinary channel steel), and the slots are provided on the bottom plate of the U-shaped channel steel.

[0032] One embodiment is that the long strip steel is a square steel with a rectangular cross-section, and the holes and slots penetrate the upper and lower wall plates of the square steel.

[0033] One embodiment is that the long strip steel is an I-beam, and the slots are provided on the bottom flange of the I-beam.

[0034] The length of the long strip steel is more than one-half or three-quarters the length of the precast concrete exterior wall panel.

[0035] To facilitate the lifting and erection of the panels, the ends of the precast concrete exterior wall panels are provided with lifting bolt slots 4.

[0036] The working method of the hoisting structure for precast concrete exterior wall panels of this utility model involves placing the precast concrete exterior wall panel flat on the ground, laying a long strip of steel on the front of the precast concrete exterior wall panel, and using bolts to pass through the holes and slots and fasten them to the pre-set bolt slots on the front of the precast concrete exterior wall panel to fix the long strip of steel to the precast concrete exterior wall panel. Then, the subsequent hoisting and erection of the panel is carried out. Because the long strip of steel is temporarily fixed to the front of the precast concrete exterior wall panel, it helps to enhance the bending resistance of the precast concrete exterior wall panel and avoids problems such as deflection deformation or structural cracking during the hoisting and erection process. Furthermore, since the long strip of steel is temporarily fixed, it can be reused after disassembly (i.e., after the panel is erected, the back rib is removed and used for hoisting the next wall panel, achieving the effect of reuse and recycling), thus not increasing the cost of the precast concrete exterior wall panel and saving costs.

[0037] The hoisting structure of this utility model for precast concrete external wall panels can effectively utilize the pre-set bolt slots on the front of the precast wall panels to temporarily connect and fix the back ribs and the wall panels, greatly enhancing the rigidity and bending moment resistance of the precast wall panel components and ensuring that no excessive component deformation occurs during the hoisting and erection of the wall panels.

[0038] The above description is only a preferred embodiment of the present utility model. Without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hoisting structure of a precast concrete external wall panel, characterized by: The precast concrete external wall panel comprises at least one back brace arranged along the length direction of the front surface of the precast concrete external wall panel, and the back brace comprises a long strip-shaped steel and a plurality of holes and grooves arranged on the long strip-shaped steel, and bolts are arranged in the holes and grooves to fasten and connect with bolt grooves prearranged on the front surface of the precast concrete external wall panel.

2. The precast concrete cladding panel hoisting arrangement of claim 1, wherein: The holes and grooves are long strip-shaped milling grooves.

3. A hoisting arrangement for precast concrete external wall panels according to claim 1 or 2, characterised in that: The long strip-shaped steel is a U-shaped channel steel, and the holes and grooves are arranged on the bottom plate of the U-shaped channel steel.

4. The hoisting structure of precast concrete external wall panels according to claim 1 or 2, characterized in that: The long strip-shaped steel is a square steel with a rectangular cross section, and the holes and grooves penetrate the upper and lower wall plates of the square steel.

5. The hoisting structure of precast concrete external wall panels according to claim 1 or 2, characterized in that: The long strip-shaped steel is an I-beam, and the holes and grooves are arranged on the bottom flange of the I-beam.

6. The hoisting structure of precast concrete facade panels according to claim 1 or 2, characterized in that: The bolts are lifting ring bolts or T-shaped bolts.

7. The hoisting structure of precast concrete facade panels according to claim 1 or 2, characterized in that: The length of the long strip-shaped steel is longer than three fourths of the length of the precast concrete external wall panel.

8. The hoisting structure of precast concrete facade panels according to claim 1 or 2, characterized in that: Two back braces are arranged at intervals along the length direction of the front surface of the precast concrete external wall panel.

9. The hoisting structure of precast concrete facade panels according to claim 1 or 2, characterized in that: The end of the precast concrete external wall panel is provided with a lifting point bolt groove.

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