CN114704064A - Flow combination construction method for disk-buckle type self-overhanging operation frame and rope net operation frame - Google Patents

Abstract

The invention discloses a mobile combination construction method of a coil buckle type self-overhanging operation frame and a rope net operation frame, and relates to the technical field of building construction. The construction steps are as follows: prefabricating an outward projecting rope net operating frame; the outer overhanging rope net operating frame is installed and fixed with the outer overhanging double steel pipes; the self-cantilever operation frame is installed, a disc buckle type triangular truss is erected on a disc buckle type support frame on the outer side of the building beam, and a hook type steel pedal is fully paved between two disc buckle type triangular trusses; installing a shaping protection grid; and disassembling the disk buckle type self-overhanging operation frame. The invention has the advantages that: the floor outer beam lower disc buckle type support frame, the overhanging disc buckle triangular truss, the protective railing, the shaping protective grating and the outer overhanging rope net operation frame are used for flow combination construction, so that the turnover material is saved, and the frame body is safe and stable; from encorbelmenting the operation frame and demolising back and do construction work platform concurrently, but integral hoisting aversion ann tears open, replaces later stage hanging flower basket for decoration, and safety and stability is high, improves the efficiency of construction.

Description

The flow combination construction method of the buckle type self-suspension work frame and the rope net work frame

technical field

The invention relates to the technical field of building construction, in particular to a flow combined construction method of a buckle-type self-suspension work frame and a rope-net work frame.

Background technique

For the construction protection frame body on the outer wall of high-rise buildings, the current conventional practices are as follows: First, use floor-standing steel pipe scaffolding. The second is the use of cantilever beam-type steel pipe scaffolding, the cast-in-place part of the anchor composite plate of the embedded steel cantilever beam is too thin, and the anchorage length is not enough, and the use of the steel cantilever protection frame will install a large number of The steel cantilever beam brings great difficulties to the transportation of the secondary structure ALC board and the installation of the glass curtain wall; the third is to use the upper-pull or lower-support type cantilevered steel pipe scaffolding, and the outer beam needs to be anchored with I-beam or The upper tie rod, steel wire rope or lower support rod increase the hidden danger of leakage of the outer wall caused by repairing the hole, which is troublesome to dismantle and has a great potential safety hazard.

The above external protection systems are relatively cumbersome, require a large amount of materials, and have high costs; in addition, high-rise buildings have high-altitude working gondolas, simple equipment, inconvenient use of frequent moving machines, low safety assurance, and low construction efficiency.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a flow combined construction method of a coil-type self-suspension work frame and a rope net work frame, which can solve the problem that the installation material consumption of the construction protection system on the outer side of the outer wall of the high-rise building in the prior art is large and the structure is relatively high. The problems of bulky, high cost, inconvenient subsequent decoration and construction, great safety hazard and low construction efficiency.

In order to solve the above-mentioned technical problems, the technical scheme of the present invention is: comprising the following steps:

S1. Prefabricated external rope net work frame: The external rope net work frame is composed of steel pipe rods, steel wire ropes, safety nets, and mobile scaffolding boards to form a rectangular frame body. The overhang length is 3m, the steel wire rope is staggeredly connected to the steel pipe rod and fixed by wire locks, the distance between the steel wire rope and the steel pipe rod in the length direction is 50-60cm, and a safety net, safety net and steel wire rope are hung under the steel wire rope A mobile scaffold is laid on the top, and a herringbone ladder and a portal frame are placed on the mobile scaffold during construction operations. The herringbone ladder, portal frame and the upper structure of the building are reliably connected by cable wind ropes, and the outer lifting rope net work frame is shaped. prefabricated;

S2. Installation of the outrigger rope mesh work frame: Pre-embed U-shaped anchor bolts in the main structure of the building, reserve the first anchor ring at a distance of 200mm from the root of the longitudinal outrigger double steel pipe, and set the second outrigger on the outrigger double pipe. Anchor ring and the third anchor ring, the second anchor ring is pre-buried at a distance of 250mm from the first anchor ring, the third anchor ring is pre-buried in the edge structural beam at the overhanging double steel pipe cantilever, and the rope net is overhanging. The installation of the work frame and the overhanging double steel pipe is prefabricated in advance. After the hoisting is in place, the outer overhanging double steel pipe is inserted into the embedded U-shaped anchor ring and fixed with a pressure plate;

S3. Installation of self-suspension work frame: set up a buckle type support frame under the outer beam of the floor. When the disc buckle type beam plate support frame is erected, a 6m pick net is set on the top of the first floor of the building, and a 3m wide net is used on the second floor and above of the building. The stereotyped prefabricated external overhanging rope net work frame is used for flow cross construction;

A disc buckle triangular truss is erected on the disc buckle support frame on the outside of the building beam. The disc buckle triangle truss has horizontal rods, inclined rods, and outer vertical rods, and is inserted horizontally on the support frame poles of the cantilevered disc buckle support frame. The rod, the horizontal rod and the supporting frame vertical rod are connected by the connecting plate and then tightened by the bolt, the inclined rod is connected with the horizontal rod below, the horizontal rod above is connected with the inclined rod by the external vertical rod, and the triangular truss of the disk buckle is symmetrically arranged. There are hook-type steel pedals between the two disc buckle triangular trusses;

S4, stereotyped protective grille installation: add protective railings to the top of the outer poles of the disc buckle triangular truss to set up protective railings, and directly install 90° elbows and horizontal steel pipes, horizontal steel pipes, elbows at the ends of the protective railing poles It is integrated with the guardrail vertical pole, and the shaped protective grille is fixed on the inner side of the outer vertical pole. The outer side of the shaped protective grille is full of dense mesh safety nets;

S5. Dismantling of the self-suspension work frame with the buckle type: When the work frame is removed, proceed in sequence: remove the support of the formwork in the middle of the floor in sections, clean and remove the formwork, steel pipes, remove the dense mesh safety net on the self-suspension work frame, remove the Self-suspension work frame protective railing poles, removal of hook-type steel pedals, removal of disc buckle triangle trusses, removal of support frame poles of side span disc buckle type support frames, when dismantling, the support frame poles are dumped inward, and the poles are sorted and sorted. And tripod, after packing, the components are transported out through the unloading platform and tower crane.

Further, in the step S2, two oblique support steel pipes are arranged between the bottom of the overhanging double steel pipe and the building beam along the horizontal direction every 3 to 4 meters, and the angle between the inclined support steel pipe and the overhanging double steel pipe is not less than 45°. , Double-sided welding is used to fix the oblique support steel pipe and the outer overhanging double steel pipe, and a steel wire rope is hung between the top of the outer overhanging double steel pipe and the building beam along the horizontal direction every 3-4m. Connect, check the strength and stability of the outer pick double steel pipe.

Further, in the step S3, the cantilever length of the triangular truss is 30-90 cm, the outer vertical rod of the triangular truss is connected with the horizontal rod through the connecting plate, and the top of the outer vertical rod exposes the connecting plate 10-20 cm; the installation step of the cantilevered triangular truss : The two horizontal rods of the cantilevered triangular truss are fixed on the connecting plate of the support frame pole of the disc buckle type support frame, and the anchoring hole at the connection of the support frame pole is locked with a bolt. The outer pole sleeves are connected by butt joints; horizontal poles are added between the protective railing poles, and the adjacent horizontal poles are crisscrossed and connected firmly, and the triangular truss and the buckle-type support frame are continuously erected.

Further, in the step S4, the height of the protective railings is 1.5m; the safety nets and the mobile scaffolding boards laid on the steel wire ropes are equipped with 3-4 layers of turnover, and the triangular trusses are equipped with 1-2 layers. Layer turnover is used.

Further, in the step S5, when the buckle-type self-suspension work frame is removed, the debris in the removal area is cleaned up, and a warning line of the removal area is set. , classified and stacked.

The advantages of the present invention lie in: the use of the flow combination construction of the lower disk buckle support frame of the outer beam of the floor, the cantilevered disk buckle triangle truss, the protective railing, the shaped protective grille and the outer hanging rope net work frame, the construction process is simplified, and the bearing capacity is high. , Easy to disassemble, save turnover materials, safe and stable frame body; use disc buckle type protective railings, equipped with elbows, transverse steel pipes and customized steel grille protection, replace the traditional steel pipe guardrails, convenient construction, save labor and materials, low carbon Safe construction; supplemented by the stereotyped prefabricated external overhanging rope net work frame for flowing cross operation, which can also be used as a construction work platform after dismantling the cantilever work frame. , improve construction efficiency.

Description of drawings

1 is a schematic diagram of the installation structure of the outer overhanging double steel pipe for the edge protection of the disk buckle type self-suspension work frame of the present invention;

Fig. 2 is the top view of the single-piece prefabricated outer pick-up rope net work frame of the present invention;

Fig. 3 is the schematic diagram of the buckled triangular truss of the present invention;

FIG. 4 is a schematic structural diagram of the protective railing and the protective grille of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments can make those skilled in the art understand the present invention more comprehensively, but do not limit the present invention to the scope of the described embodiments.

The external wall of the building in this implementation case is constructed by the flow combination frame of the buckle-type self-suspension work frame and the rope mesh work frame, which is applied to the research and development building project under construction. It consists of a building height of 99.60m and a total construction area of 48281.2 square meters, of which the podium is 3 floors, the building height is 14.60m, the underground is 6419.3 square meters, and the ground is 41861.9 square meters. Architectural structure: main building-frame-shear structure, podium-frame structure. According to the structure and appearance characteristics of the building, the form of the lower disk buckle support frame of the outer beam of the floor + the cantilevered disk buckle triangle truss + the disk buckle type protective railing and the shaped grille + the lower outer hanging rope net working frame is used as the external protection. Make sure the construction goes smoothly.

Specific embodiments include the following steps:

S1. Prefabricated external pick-up rope net work frame: As shown in Figure 2, the external pick-up rope net work stand is composed of a steel pipe rod 301 of φ48, a steel wire rope 302, a safety net 303, and a mobile scaffolding plate 304 to form a rectangular frame body, and the external pick-up rope The net work frame is set horizontally, and the overhang length of the outer pick-up rope net work frame is 3m. The steel wire rope 302 is staggered and connected to the steel pipe rod 301 and fixed by wire locks. The distance between the steel wire rope 302 and the steel pipe rod 301 in the length direction is A safety net 303 is hung under the steel wire rope 302, and a mobile scaffolding board 304 is laid on the safety net 303 and the steel wire rope 302. During construction, a herringbone ladder (within a floor height of 3m) and a portal frame are placed on the mobile scaffolding board 304. (The floor height is greater than 3m), the herringbone ladder, the portal frame and the upper structure of the building are reliably connected by the cable wind rope, and the outer hanging rope net work frame is shaped and prefabricated.

S2. Installation of the rope net work frame for overhanging: As shown in Figure 1, M8*51U type anchor bolts are pre-buried in the main structure of the building, and the first anchor ring is reserved at a distance of 200mm from the root of the double steel pipe 201. A second anchor ring and a third anchor ring are also set on the double steel pipe, the second anchor ring is set at a distance of 250mm from the first anchor ring, and the distance from the outer end of the edge structural beam at the cantilevered double steel pipe 201 is 100mm. The third anchor ring is pre-buried, and the outer overhanging rope net work frame and the outer overhanging double steel pipe 201 are installed and prefabricated in advance. After hoisting in place, insert the 3m outer overhanging double steel pipe 201 into the pre-buried U-shaped anchor ring during construction, using 10mm The thick platen is fixed for easy installation and disassembly.

Two diagonal support φ48 steel pipes 202 are arranged between the bottom of the overhanging double steel pipe 201 and the building beam along the horizontal direction every 3 to 4 meters. The angle between the inclined support steel pipe and the overhanging double steel pipe 201 is not less than 45°. Double-sided welding is used to fix the double-sided outer steel pipes 201. A steel wire rope is hung between the top of the outer double steel pipes 201 and the building beams along the horizontal direction every 3-4m, and the embedded φ22 steel snap rings are used for reliable connection with the building beams. Check the strength and stability of the outrigger double steel pipe 201.

S3. Installation of self-suspension work frame: set up a buckle type support frame under the outer beam of the floor. When the disc buckle type beam plate support frame is erected, a 6m pick net is set on the top of the first floor of the building, and a 3m wide net is used on the second floor and above of the building. The stereotyped prefabricated external overhanging rope net work frame is used for cross-construction. After the cantilever work frame is removed, it can also be used as a construction work platform. It can be hoisted and moved as a whole to replace the hanging basket for later decoration.

A buckled triangular truss is erected on the disc buckled support frame on the outside of the building beam. As shown in Figure 3, the disc buckled triangular truss has horizontal rods 403, inclined rods, and outer vertical rods 404. The installation steps of the cantilevered triangular truss: the cantilevered triangular truss The two horizontal rods 403 of the truss are fixed on the connecting plate 401 of the supporting frame vertical rod 402 of the disk buckle type supporting frame, and the anchoring hole at the connection of the supporting frame vertical rod 402 is locked with a bolt, instead of the inclined rod U-shaped bracket welding, To ensure the stability of the frame, the oblique rod is connected to the horizontal rod 403 below, the horizontal rod 403 above and the oblique rod are connected by the outer vertical rod 404, the buckled triangular trusses are symmetrically arranged, and the two disc buckled triangular trusses are fully paved Hook-type steel pedals, horizontal rods are added between the protective railing poles 404, the adjacent horizontal rods are crisscrossed and connected firmly, the triangular truss and the buckle-type support frame are continuously erected, and no lag installation or arbitrary dismantling is allowed.

According to the force of the frame body, carry out the in-depth design of the triangular truss with self-suspension and buckle, and design the cantilever length of the triangular truss to be 30-90cm. The top exposed connection pad 401 is 10-20 cm.

S4. The installation of the shaped protective grille: add a protective railing pole 405 on the top of the outer pole 404 of the buckled triangular truss to set up a protective railing. The height of the protective railing pole 405 is 1.5m. The pole 404 is connected by the sleeve, which simplifies the construction process and facilitates the construction. As shown in Figure 4, directly install a 90° elbow and a φ48 transverse steel pipe 406 at the end of the protective railing pole 405, the transverse steel pipe 406, the elbow and the protective railing 405 The vertical poles are connected as a whole, and the shaped protective grille 407 is fixed on the inner side of the outer vertical pole 404. The shaped protective grille 407 is shaped and prefabricated, and the shaped steel grille protection is installed to replace the traditional fastener-type steel tube outer scaffolding, saving materials and eliminating the need for There is also a horizontal rod with disc buckle, which is used as a protective fence and an operating platform, with good overall stability. After the disc buckle type self-suspension work frame is removed, the shaped steel grille can be moved to restore the edge protection.

After installation, check whether the disc-type self-suspension work frame is set up according to the design, and then put a dense mesh safety net on the outer side of the outer pole 404 and the shaped protective grille 407.

The safety net 303 of the outer lifting rope net work frame and the mobile scaffolding board 304 laid on the wire rope 302 are equipped with 3-4 layers of turnover, and the triangular truss is equipped with 1-2 layers of turnover to improve the construction turnover efficiency.

S5. Dismantling of the self-suspension work frame with the buckle type: When the work frame is removed, proceed in sequence: remove the support of the formwork in the middle of the floor in sections, clean and remove the formwork, steel pipes, remove the dense mesh safety net on the self-suspension work frame, remove the Self-suspension work frame protective railing poles, removal of hook-type steel pedals, removal of disc buckle triangle trusses, removal of support frame poles of side span disc buckle type support frames, when dismantling, the support frame poles are dumped inward, and the poles are sorted and sorted. And tripod, after packing, the components are transported out through the unloading platform and tower crane.

The strength of the concrete structure must meet the design and specification requirements during demolition. When the disc-type self-suspension work frame is demolished, the debris in the demolition area should be cleaned up, and the demolition area cordon should be set. Manual delivery, sorting and stacking.

When dismantling, the personnel shall be dismantled in groups, 2-3 persons shall be divided into groups, one person shall be responsible for dismantling the self-suspension scaffold, and the other shall be responsible for moving the fixed rope of the safety belt, so as to ensure that the dismantling personnel are always protected by the safety belt; A good seat belt must be hung high and used low. When removing, make sure that the side span bracket is not removed, and the seat belt is fastened to the side span bracket to ensure safety.

In view of the current situation that floor scaffolding and cantilevered scaffolding are generally used for external scaffolding of buildings, and the construction cost of lifting scaffolding is high, this embodiment uses a disk buckle type support frame under the outer beam of the floor, a cantilevered disk buckle triangular truss, and a protective railing. , The flow combination construction of the shaped protective grille and the outer pick-up rope net work frame, which simplifies the construction process, has high bearing capacity, is easy to disassemble, saves turnover materials, and the frame body is safe and stable. And customized steel grille protection, replacing the traditional steel pipe guardrails, convenient construction, saving labor and materials, low-carbon and safe construction; supplemented by the stereotyped prefabricated external overhanging rope mesh work frame flow cross operation, after the self-hanging work frame is removed As a construction work platform, it can be hoisted and dismantled as a whole, replacing the hanging basket for later decoration, with high safety and stability and improving construction efficiency.

It is suitable for the safety protection of the outer wall of high-rise buildings with reinforced concrete frame structure, and the balcony, bay window and other structures without protruding outer wall. Safety protection work frame during floor segment construction of concrete frame structure commercial office buildings, etc.

In this implementation case, the installation area of the buckle support system is about 40,000 square meters, and the construction of the main structure is completed in about 280 days. The project construction using the present invention has good economic benefits, saves costs and improves construction efficiency.

The foregoing has shown and described the basic principles and main features of the present invention, as well as the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The flow combination construction method of the self-suspension work frame of the disc buckle type and the rope net work frame is characterized in that: comprise the following steps: S1. Prefabricated external rope net work frame: The external rope net work frame is composed of steel pipe rods, steel wire ropes, safety nets, and mobile scaffolding boards to form a rectangular frame body. The overhang length is 3m, the steel wire rope is staggeredly connected to the steel pipe rod and fixed by wire locks, the distance between the steel wire rope and the steel pipe rod in the length direction is 50-60cm, and a safety net, safety net and steel wire rope are hung under the steel wire rope A mobile scaffolding board is laid on the upper part, and a herringbone ladder and a portal frame are placed on the mobile scaffolding board during construction. The herringbone ladder, the portal frame and the upper structure of the building are reliably connected by cables and wind ropes, and the lower part is provided with diagonal bracing and an external pick-up rope. Prefabrication of net work frame stereotypes; S2. Installation of the outrigger rope mesh work frame: Pre-embed U-shaped anchor bolts in the main structure of the building, reserve the first anchor ring at a distance of 200mm from the root of the longitudinal outrigger double steel pipe, and set the second outrigger on the outrigger double pipe. Anchor ring and the third anchor ring, the second anchor ring is pre-buried at a distance of 250mm from the first anchor ring, the third anchor ring is pre-buried in the edge structural beam at the overhanging double steel pipe cantilever, and the rope net is overhanging. The installation of the work frame and the overhanging double steel pipe is prefabricated in advance. After the hoisting is in place, the outer overhanging double steel pipe is inserted into the embedded U-shaped anchor ring and fixed with a pressure plate; S3. Installation of self-suspension work frame: set up a buckle type support frame under the outer beam of the floor. When the disc buckle type beam plate support frame is erected, a 6m pick net is set on the top of the first floor of the building, and a 3m wide net is used on the second floor and above of the building. The stereotyped prefabricated external overhanging rope net work frame is used for flow cross construction; A disc buckle triangular truss is erected on the disc buckle support frame on the outside of the building beam. The disc buckle triangle truss has horizontal rods, inclined rods, and outer vertical rods, and is inserted horizontally on the support frame poles of the cantilevered disc buckle support frame. The rod, the horizontal rod and the supporting frame vertical rod are connected by the connecting plate and then tightened by the bolt, the inclined rod is connected with the horizontal rod below, the horizontal rod above is connected with the inclined rod by the external vertical rod, and the triangular truss of the disk buckle is symmetrically arranged. There are hook-type steel pedals between the two disc buckle triangular trusses; S4, stereotyped protective grille installation: add protective railings to the top of the outer poles of the disc buckle triangular truss to set up protective railings, and directly install 90° elbows and horizontal steel pipes, horizontal steel pipes, elbows at the ends of the protective railing poles It is integrated with the guardrail vertical pole, and the shaped protective grille is fixed on the inner side of the outer vertical pole. The outer side of the shaped protective grille is full of dense mesh safety nets; S5. Dismantling of the self-suspension work frame with the buckle type: When the work frame is removed, proceed in sequence: remove the support of the formwork in the middle of the floor in sections, clean and remove the formwork, steel pipes, remove the dense mesh safety net on the self-suspension work frame, remove the Self-suspension work frame protective railing poles, removal of hook-type steel pedals, removal of disc buckle triangle trusses, removal of support frame poles of side span disc buckle type support frames, when dismantling, the support frame poles are dumped inward, and the poles are sorted and sorted. And tripod, after packing, the components are transported out through the unloading platform and tower crane. 2. The flow-combined construction method of the self-suspension work frame of the disc buckle type and the rope net work frame according to claim 1, characterized in that: in the step S2, the horizontal direction between the underside of the outer overhanging double steel pipe and the building beam Two oblique support steel pipes are set every 3 to 4 meters in the direction. The angle between the oblique support steel pipe and the overhanging double steel pipe is not less than 45°. A steel wire rope is hung between the top of the steel pipe and the building beam along the horizontal direction at intervals of 3-4m, and the embedded steel snap ring is used to reliably connect the building beam to check the strength and stability of the double steel pipe. 3. The flow combined construction method of the self-suspension work frame of the disc buckle type and the rope net work frame according to claim 1, characterized in that: in the step S3, the triangular truss cantilever length is 30-90 cm, and the triangular truss The outer pole and the horizontal pole are connected through the connecting plate, and the top of the outer pole is exposed to the connecting plate for 10-20cm; the installation steps of the cantilevered triangular truss: the two horizontal poles of the cantilevered triangle truss are fixed on the support frame pole of the disc buckle type support frame On the connecting plate of the truss, the anchoring hole at the connection of the supporting frame pole is locked with a bolt, and the protective railing pole is connected with the outer pole sleeve of the triangular truss; The rods are crisscrossed and connected firmly, and the triangular truss and the buckle-type support frame are continuously erected. 4. The construction method of the flow combination of the disc buckle type self-suspension work frame and the rope net work frame according to claim 1, characterized in that: in the step S4, the height of the protective railing pole is 1.5m; The safety net of the rope net work frame and the mobile scaffolding board laid on the wire rope are equipped with 3-4 layers of turnover, and the triangular truss is equipped with 1-2 layers of turnover. 5 . The flow combined construction method of the buckle type self-suspension work frame and the rope net work frame according to claim 1, wherein: in the step S5, when the disc buckle type self-suspension work frame is removed, clean The debris in the demolition area shall be set up with a cordon of the demolition area. When the demolition is carried out, it shall be carried out from top to bottom.

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