CN112942777A

CN112942777A - Ultrahigh-layer periphery protection cyclic telescopic detachable cantilever structure and mounting method

Info

Publication number: CN112942777A
Application number: CN202110213296.5A
Authority: CN
Inventors: 谢希翔; 姚建忠; 杨凡凡; 李岩; 刘剑; 肖扬; 徐少清; 王岩峰
Original assignee: Second Construction Engineering Co Ltd of China Construction Third Engineering Division
Current assignee: Second Construction Engineering Co Ltd of China Construction Third Engineering Division
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-06-11
Anticipated expiration: 2041-02-25
Also published as: CN112942777B; CN120844777A; CN120925633A

Abstract

The circularly telescopic detachable overhanging structure is used between the Nth floor and the (N + 1) th floor of a super high-rise building, and comprises a double-layer overhanging safety net, a fixing clamp, a steel wire rope, and N layers of steel beams and N +1 layers of steel beams which are arranged on the outer sides of the Nth floor and the (N + 1) th floor; double-deck safety net of encorbelmenting is by the fixed pipe frame that forms of pipe, the last flange department and the N +1 layer girder steel of N layer girder steel set up mounting fixture, the pipe frame outside all sets up sliding sleeve with the inboard, mounting fixture adopts second bolt fastening spare to be connected with sliding sleeve, the adjustable pipe of establishing through the cover on the pipe between the pipe frame is connected, adopt first bolt fastening spare to fix adjustable pipe and pipe frame, the pipe frame adopts wire rope to carry out the drawknot with N +1 layer girder steel, the bight and the intermediate position of pipe frame set up iron plate, the surface all sets up horizontal U type couple about the iron plate, mounting fixture is by horizontal U type cardboard, little round steel and connecting plate are constituteed.

Description

Ultrahigh-layer periphery protection cyclic telescopic detachable cantilever structure and mounting method

Technical Field

The invention relates to the technical field of building steel structure safety protection, in particular to a circulating telescopic detachable cantilever structure for ultrahigh-layer periphery protection and an installation method.

Background

At present, in the field of building engineering, steel structure buildings are used as novel energy-saving and environment-friendly building systems, and super high-rise steel structure buildings are not grouped. In the construction process of a super high-rise building, safety protection is the key point, especially the outer frame is heavier to prevent falling objects from high altitude, and the conventional protection measures are that an embedded part is arranged in advance at a floor slab position, overhanging I-shaped steel is installed, and a safety net is erected on the I-shaped steel.

Therefore, there is a need to develop an overhanging structure of a super high-rise peripheral protection and a corresponding mounting method to solve one or more of the above-mentioned technical problems.

Disclosure of Invention

In order to solve one or more technical problems in the prior art, the invention aims to provide a cyclic telescopic detachable overhanging structure for super high-rise peripheral protection, which is used between the nth floor and the (N + 1) th floor of a super high-rise building, and comprises a double-layer overhanging safety net (21), a fixing clamp (1), a steel wire rope (5), and N layers of steel beams (6) and N +1 layers of steel beams (7) arranged on the outer sides of the nth floor and the (N + 1) th floor; double-deck safety net (21) of encorbelmenting forms pipe frame (2) by the pipe is fixed, the last flange department of N layer girder steel (6) sets up mounting fixture (1), N +1 layer girder steel sets up mounting fixture (1) is used for the drawknot wire rope (5).

Preferably, sliding sleeve (3) are all set up in pipe frame (2) outside and inboard, the diameter of sliding sleeve (3) is greater than the pipe diameter of pipe frame (2), thereby guarantee sliding sleeve (3) can freely slide, mounting fixture (1) with sliding sleeve (3) adopt second bolt fastener (15) to connect.

Preferably, connect through adjustable pipe (4) that the cover was established on the pipe between pipe frame (2), adopt first bolt fastener (8) will adjustable pipe (4) with pipe frame (2) are fixed, pipe frame (2) adopt wire rope (5) to carry out the drawknot with N +1 layer girder steel.

Preferably, adjustable pipe (4) set up two sets ofly in corresponding position department, and every adjustable pipe of group (4) divide into a big adjustable pipe and a little adjustable pipe, and big adjustable pipe cover is established on little adjustable pipe, and will through first bolt fastener (8) adjustable pipe (4) with pipe frame (2) are fixed.

Preferably, all be provided with the long bolt round hole on big adjustable pipe with little adjustable pipe, big adjustable pipe with little adjustable pipe on the long bolt round hole is corresponding, and first bolt fastener (8) are through passing the long bolt round hole is fixed the pipe of pipe frame (2) with adjustable pipe (4).

Preferably, the corner and the middle position of the round pipe frame (2) are provided with iron plates (9), and the upper surface and the lower surface of each iron plate (9) are provided with transverse U-shaped hooks (10) for hanging and arranging a double-layer overhanging safety net (21).

Preferably, the fixing clamp (1) is composed of a transverse U-shaped clamping plate (11), small round steel (12) and a connecting plate (13), the transverse U-shaped clamping plate (11) is tightly connected with the N layers of steel beams (6) and the N +1 layers of steel beams through jacking bolts (14), and the phenomenon that the steel beams do not slide is guaranteed.

Preferably, one end of the steel wire rope (5) is connected with the sliding sleeve (3) on the outer side of the circular pipe frame (2), the other end of the steel wire rope is connected with the fixing clamp (1) on the N +1 layers of steel beams (7), and when the steel wire rope is connected with the sliding sleeve (3), the steel wire rope is fixed by a third bolt fastener (31).

The invention also aims to provide an installation method of the ultrahigh-rise periphery protection circulating telescopic detachable cantilever structure, which comprises the following steps:

step 1, installing a circular tube frame (2): splicing round pipes on the ground into a rectangular frame structure according to corresponding sizes, wherein adjustable round pipes (4) are arranged on two sides of the frame, the diameter of each adjustable round pipe (4) is larger than that of the round pipe frame, and long bolt round holes are formed in the round pipes;

step 2, installing an iron plate (9) and a transverse U-shaped hook (10): arranging an iron plate (9) and a transverse U-shaped hook (10) at the corner part and the middle position of the round pipe frame (2), and welding the iron plate and the round pipe, wherein the transverse U-shaped hook is welded on the upper surface and the lower surface of the iron plate (9);

and 3, installing a sliding sleeve (3): before the circular tube frame (2) is assembled, the sliding sleeve (3) is sleeved on the circular tube in advance, the sliding sleeve (3) is arranged on the circular tubes on the two sides, the diameter of the sliding sleeve (3) is larger than that of the circular tube, the sliding sleeve can freely slide along the circular tube, and meanwhile the sleeve can freely rotate;

and 4, installing a fixing clamp (1): respectively installing a fixing clamp (1) on the upper flanges of N layers of steel beams (6) and N +1 layers of steel beams (7), and tightly connecting the transverse U-shaped clamping plate (11) of the fixing clamp (1) with the N layers of steel beams (6) and the N +1 layers of steel beams by using a tightening bolt (14) to ensure that the fixing clamp does not slide;

step 5, hanging double-layer overhanging safety nets (21), wherein the double-layer overhanging safety nets (21) are respectively hung on horizontal U-shaped hooks (10) on the upper surface and the lower surface of a pre-installed iron plate (9);

step 6, installing an overhanging structure: after the whole structure of encorbelmenting adjusted the size through adjustable pipe (4) according to peripheral contour line, adopt the tower crane to hoist, take one's place the back, establish wire rope (5) in sliding sleeve (3) the pull-up in the pipe frame (2) outside, wire rope (5) one end is connected sliding sleeve (3) in the pipe frame (2) outside, on the other end is connected N +1 layer girder steel (7) mounting fixture (1), wherein with when sliding sleeve (3) are connected, adopt third bolt fastener (31) fixed.

Preferably, in the step 5, the mesh size of the upper surface safety net of the iron plate (9) is not more than 15mm, and the mesh size of the lower surface safety net is not more than 30 mm.

Compared with the prior art, the invention has one or more of the following technical effects:

structural design is simple, and the preparation is simple and convenient, excellent in use effect, convenient for material collection, the installation effectiveness is high, has fine solved the problem of high-rise and the complete protection of superelevation layer periphery, has played fine guard action to preventing high weight-down, and the repeated turnover of entire structure is used moreover, has saved the cost, has reduced the loss, has the characteristics of fine economy, environmental protection.

Drawings

So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments. The drawings relate to preferred embodiments of the invention and are described below:

fig. 1 is a schematic view of a telescopic detachable cantilever structure (without a safety net) according to a preferred embodiment of the present invention.

Fig. 2 is a schematic view of a telescopic detachable cantilever structure (including a safety net) according to a preferred embodiment of the present invention.

Fig. 3 is a top view of a telescoping detachable cantilever structure according to a preferred embodiment of the present invention.

Fig. 4 is a side view of a mounting clip according to a preferred embodiment of the present invention.

FIG. 5 is a schematic view of the measurement of the circular tube frame and the sliding sleeve according to the preferred embodiment of the invention.

Fig. 6 is a schematic view showing the connection of the circular tube frame with the iron plate and the transverse U-shaped hook according to the preferred embodiment of the present invention.

FIG. 7 is a schematic view of the structure of the circular tube frame and the adjustable circular tube according to the preferred embodiment of the invention.

Wherein: 1. fixing the clamp; 2. a circular tube frame; 3. a sliding sleeve; 4. an adjustable round tube; 5. a wire rope; 6. n layers of steel beams; 7. n +1 layers of steel beams; 8. a first bolt fastener; 9. an iron plate; 10 transverse U-shaped hooks; 11. a transverse U-shaped clamping plate; 12. a small round tube; 13. a connecting plate; 14. jacking the bolt; 15. a second bolt fastener; 21. a double-layer overhanging safety net; 31. a third bolt fastener.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Reference will now be made in detail to the various embodiments, one or more examples of which are illustrated in each figure. The examples are provided by way of explanation and are not meant as limitations. For example, features illustrated or described as part of one embodiment can be used on or in conjunction with any other embodiment to yield yet a further embodiment. It is intended that the present invention encompass such modifications and variations.

In the following description of the drawings, the same reference numerals indicate the same or similar components. Generally, only the differences between the individual embodiments will be described. Descriptions of parts or aspects in one embodiment can also be applied to corresponding parts or aspects in another embodiment, unless explicitly stated otherwise.

As shown in fig. 1 to 7, the present embodiment is a cyclic telescopic detachable overhanging structure for protecting super high-rise periphery, and is used for safety protection of super high-rise periphery against falling objects. It includes double-deck safety net 21, mounting fixture 1, wire rope 5, N layer and N +1 layer of girder steel 6 and the layer of girder steel 7 of N +1 in the layer outside. The double-layer overhanging safety net 21 is fixed by a round pipe to form a round pipe frame 2 structure, and the diameter of the round pipe is phi 48x 3.0; iron plates 9 are arranged at the corners and the middle position of the round tube frame 2, and the iron plates and the frame adopt a fillet weld form; the upper surface and the lower surface of the iron plate 9 are provided with transverse U-shaped hooks 10 for hanging a double-layer safety net 21; the frames are connected through an adjustable round pipe 4 sleeved on a round pipe, and the diameter of the adjustable round pipe 4 is 10mm larger than that of the round pipe frame 2, so that free adjustment is guaranteed; bolt holes are formed in the adjustable circular tube 4 and the overlapped circular tube frame 2, the distance between the bolt holes is 100mm, when the size of the circular tube frame 2 needs to be adjusted, the position of each bolt hole can be changed to stretch the circular tube frame, and the adjustable circular tube 4 and the frame circular tube 2 are fixed through a first bolt fastener 8; the outer side of the circular tube frame 2 is provided with a sliding sleeve 3, the diameter of the sliding sleeve 3 is 15mm larger than that of the circular tube frame 2, and the sleeve can slide freely; the sliding sleeve 3 and a steel beam (N +1 layer) 7 on the outer side of the floor are tied by a steel wire rope 5; the inner side of the circular tube frame 2 is also provided with a sliding sleeve 3; a fixed clamp 1 is arranged at the upper flange of a steel beam (N layers) 6 on the outer side of the floor, and is connected with a sliding sleeve 3 by a second bolt fastener 15; the upper flange of the steel beam (N +1 layer) 7 on the outer side of the floor is also provided with a fixing clamp 1 for tying a steel wire rope 5; the fixing clamp consists of a transverse U-shaped clamping plate 11, a small circular tube 12 and a connecting plate 13; the transverse U-shaped clamping plate 11 is tightly connected with the floor steel beam by a tightening bolt 14 to ensure that the sliding is not caused; one end of the steel wire rope is connected with the sliding sleeve 3 on the outer side of the circular tube frame 2, the other end of the steel wire rope is connected with the fixing clamp 1 on the steel beam (N +1 layer) 7 on the outer side of the floor, and when the steel wire rope is connected with the sliding sleeve 3, the steel wire rope is fixed by a third bolt fastener 31.

The installation method of the cyclic telescopic detachable cantilever structure for the super high-rise peripheral protection in the embodiment comprises the following steps:

step 1, installing a circular tube frame 2, splicing the circular tubes into a rectangular frame structure on the ground according to corresponding sizes, arranging adjustable circular tubes 4 on two sides of the frame, wherein the diameter of each adjustable circular tube 4 is 10mm larger than that of the frame circular tube 2, and bolt holes are formed in the circular tubes.

And 2, installing an iron plate 9 and a transverse U-shaped hook 10, wherein the iron plate 9 and the transverse U-shaped hook 10 are arranged at the corner and the middle of the round pipe frame 2 and are welded with the round pipe, and the transverse U-shaped hook 10 is welded on the upper surface and the lower surface of the iron plate 9.

And step 3, installing the sliding sleeve 3, wherein the sliding sleeve 3 is sleeved on the circular pipe in advance before the circular pipe frame 2 is assembled, the sliding sleeve 3 is required to be arranged on the circular pipes on two sides, the diameter of the sliding sleeve is 15mm larger than that of the circular pipe, the sliding sleeve can be ensured to freely slide along the circular pipe, and meanwhile, the sleeve can freely rotate.

And 4, installing the fixing clamp 1, wherein the fixing clamp 1 is to be respectively installed on the upper flanges of the N layers of steel beams and the N +1 layers of steel beams, and the transverse U-shaped clamping plate 11 of the fixing clamp 1 is tightly propped against the upper flange of the steel beam through a bolt fastener so as to ensure that the steel beams are not loosened.

And 5, hanging a double-layer safety net 21, wherein the safety net is respectively hung on the transverse U-shaped hooks 10 of the upper surface and the lower surface of the iron plate 9 which are installed in advance, the mesh size of the upper surface safety net is not larger than 15mm, and the mesh size of the lower surface safety net is not larger than 30 mm.

And 6, installing the cantilever structure, adjusting the size of the whole cantilever structure through an adjustable circular tube 4 according to a peripheral contour line, hoisting by adopting a tower crane, pulling up a steel wire rope 5 on the sliding sleeve 3 outside the circular tube frame after the cantilever structure is in place, and connecting the other end of the steel wire rope 5 with an upper steel beam fixing clamp through a bolt fastener.

In this embodiment, all materials are generally selected from Q235B, and the bolt is a 8.8-level high-strength bolt. In the steps 1-6, the manufacturing precision deviation of all components meets the requirement of GB50205 'acceptance criteria for construction quality of steel structure engineering', the components are pre-assembled in a factory, and meanwhile, the safety protection form conforms to 17G911 'safety protection for steel structure construction'. In the

steps

4 and 6, the diameter of the 8.8-level high-strength bolt is not less than M20, and the material and the requirement of the bolt meet the regulations of the current national standard JGJ82-2011 'technical code for connecting high-strength bolts of steel structures'.

With this embodiment practical application in the super high-rise structure building of a certain engineering in Guangdong province, building height 388m, 70 layers on the bottom, project are located the flourishing highway section in downtown, and in the work progress, for preventing the object that falls from the high altitude, need set up the safety net in the floor periphery about every 5 layers, adopt pre-buried ironware earlier stage, set up the I-steel of encorbelmenting, then lay the form of safety net. The labor cost is high, the construction period is long, and the danger of the edge operation is great. However, the detachable overhanging structure of the embodiment has the advantages of simple structural design, simple and convenient manufacture, good use effect, convenient material taking, high installation efficiency, good protection effect on the periphery of high-rise and super high-rise buildings, good protection effect on the high-rise and super high-rise buildings, repeated turnover use of the whole structure, cost saving, loss reduction, good economy and environmental protection

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention, and the features of the embodiments that do not violate each other may be combined with each other. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cyclically telescopic and detachable cantilever structure for the outer protection of super high-rise buildings, characterized in that: it is used between the Nth floor and the N+1th floor of a super high-rise building, including a double-layer cantilever safety net (21), fixing clamps (1), steel wire ropes (5), and N-layer steel beams (6) and N+1-layer steel beams (7) arranged on the N-th floor and the outside of the N+1-th floor; The double-layer cantilevered safety net (21) is fixed by a circular tube to form a circular tube frame (2), the fixing fixture (1) is provided at the upper flange of the N-layer steel beam (6), and the N+ The fixing fixture (1) is provided on the 1-layer steel beam for tying the steel wire rope (5).

2. A kind of circular telescopic detachable cantilever structure for super high-rise peripheral protection according to claim 1, characterized in that: sliding sleeves (3) are provided on both the outer side and the inner side of the circular tube frame (2), The diameter of the sliding sleeve (3) is larger than that of the circular tube frame (2), so as to ensure that the sliding sleeve (3) can slide freely, and the fixing fixture (1) and the sliding sleeve The tubes (3) are connected with a second bolt fastener (15).

3. A kind of circular telescopic detachable cantilever structure for super high-rise peripheral protection according to claim 2, characterized in that: between the circular tube frames (2), an adjustable circle set on the circular tube is used The pipes (4) are connected, and the first bolt fasteners (8) are used to fix the adjustable round pipe (4) and the round pipe frame (2), and the round pipe frame (2) is connected to the N Steel beams on the +1 floor are tied with steel wire ropes (5).

4. A kind of circular telescopic and detachable cantilever structure for super high-rise peripheral protection according to claim 3, characterized in that: two groups of said adjustable round pipes (4) are arranged at corresponding positions, and each group can be The adjusting round pipe (4) is divided into a large adjustable round pipe and a small adjustable round pipe. 8) Fix the adjustable round tube (4) and the round tube frame (2).

5. A cyclic telescopic and detachable cantilever structure for super high-rise peripheral protection according to claim 4, characterized in that: both the large adjustable circular pipe and the small adjustable circular pipe are provided with There are long bolt round holes, the large adjustable round tube corresponds to the long bolt round hole on the small adjustable round tube, and the first bolt fastener (8) passes through the long bolt round hole The hole fixes the round tube of the round tube frame (2) with the adjustable round tube (4).

6. A kind of circular telescopic and detachable cantilever structure for super high-rise peripheral protection according to claim 5, characterized in that: iron plates (9) are provided at the corners and the middle positions of the circular tube frame (2) The upper and lower surfaces of the iron plate (9) are provided with horizontal U-shaped hooks (10) for hanging a double-layer cantilever safety net (21).

7. A cyclically telescopic and detachable cantilever structure for super high-rise peripheral protection according to claim 6, characterized in that: the fixing fixture (1) is composed of a transverse U-shaped card board (11), a small round steel (12) is composed of a connecting plate (13), and the transverse U-shaped clamping plate (11) is tightly connected with the N-layer steel beam (6) and the N+1-layer steel beam by means of tightening bolts (14). , guaranteed not to slip.

8 . The cyclically telescopic and detachable cantilever structure for outer protection of super high-rise buildings according to claim 7 , wherein one end of the wire rope ( 5 ) is connected to the sliding sleeve outside the circular tube frame ( 2 ). 9 . The other end of the pipe (3) is connected to the fixing fixture (1) on the N+1 layer steel beam (7), wherein when connecting with the sliding sleeve (3), a third bolt fastener (31) is used fixed.

9. A method for installing a super high-rise peripheral protection circulating telescopic and detachable cantilever structure according to claim 8, characterized in that it comprises the steps:

Step 1, install the round tube frame (2): assemble the round tube on the ground into a rectangular frame structure according to the corresponding size, and set the adjustable round tubes (4) on both sides of the frame, the diameter of the adjustable round tube (4) is larger than that of the The diameter of the pipe frame is large, and the round pipes are provided with long bolt round holes;

Step 2, install the iron plate (9) and the horizontal U-shaped hook (10): set the iron plate (9) and the horizontal U-shaped hook (10) at the corners and middle positions of the round tube frame (2), and The round tubes are connected by welding, and the horizontal U-shaped hooks are welded on the upper and lower surfaces of the iron plate (9);

Step 3, install the sliding sleeve (3): before assembling the round pipe frame (2), pre-sleeve the sliding sleeve (3) on the round pipe, and set the sliding sleeve (3) on both sides of the round pipe , the diameter of the sliding sleeve (3) is larger than the diameter of the round pipe, so as to ensure that the sliding sleeve can slide freely along the round pipe, and at the same time, the sleeve can rotate freely;

Step 4, install the fixing fixture (1): respectively install the fixing fixture (1) on the upper flanges of the N-layer steel beam (6) and the N+1-layer steel beam (7), and fix the horizontal direction of the fixing fixture (1). The U-shaped clamping plate (11) is tightly connected with the N-layer steel beam (6) and the N+1-layer steel beam by means of tightening bolts (14) to ensure no sliding;

Step 5, hang a double-layer cantilever safety net (21), and the double-layer cantilever safety net (21) is respectively hung on the horizontal U-shaped hooks (10) on the upper and lower surfaces of the iron plate (9) installed in advance ;

Step 6, install the cantilever structure: after the entire cantilever structure is adjusted according to the outer contour line through the adjustable round pipe (4), the tower crane is used for hoisting, and after it is in place, the sliding sleeve on the outside of the round pipe frame (2) (3) Pull up the wire rope (5), one end of the wire rope (5) is connected to the sliding sleeve (3) on the outer side of the circular tube frame (2), and the other end is connected to the said steel beam (7) on the N+1 layer. The fixing clamp (1) is fixed with a third bolt fastener (31) when connecting with the sliding sleeve (3).

10. An installation method according to claim 9, characterized in that: in the step 5, the mesh size of the safety net on the upper surface of the iron plate (9) is not more than 15mm, and the mesh size of the safety mesh on the lower surface is not more than 30mm.