CN110206298A - A kind of optimization sliding-mode structure construction technology for the matrix side storehouse that misplaces - Google Patents

Abstract

The invention discloses a kind of optimization sliding-mode structure construction technology for the matrix side storehouse that misplaces, includes the following steps: to carry out preparation of construction, each section of sliding mode system is designed respectively, then BIM construction simulation is carried out to sliding form apparatus；It constructs to sliding form apparatus, sliding module assembled is arranged jack and oil circuit, quality testing is carried out to assembled device；After the assembling for completing sliding mode system, to bulkhead slding form operation, reinforcement construction is carried out, concreting, promotion are carried out according still further to the schedule of slding form operation；After the completion of silo roof concrete placings, start to remove sliding system, be split into principle afterwards according to removing first to fill, then cooperates with tower crane and complete to remove；Vertically, the measurement reversed carries out construction detection and takes surveillance and control measure.The present invention simulates operation optimization construction technology by BIM, the construction difficult problem by stopping sliding, sliding empty, secondary assembling, the connection of reinforcing bar embedded sleeve barrel etc., after solving matrix storehouse, different level, staggered floor construction.

Description

An optimized sliding form structure construction technology for dislocation matrix square warehouse

technical field

The invention relates to the technical field of sliding-form engineering auxiliary devices, in particular to an optimized sliding-form structure construction process for a dislocation matrix square silo.

Background technique

Slipform engineering technology is a kind of construction with high degree of mechanization, fast construction speed, less site occupation, strong structural integrity, good seismic performance, guaranteed safe operation, and significant comprehensive environmental and economic benefits in the construction of cast-in-place concrete structures in my country. technique, often referred to simply as "slip mode". Compared with conventional construction methods, slip form construction has the advantages of fast construction speed, high degree of mechanization, saving of materials required for formwork and scaffolding, convenient disassembly of formwork, flexible assembly and reusability. advantage.

At present, when constructing matrix warehouses, different elevations, and split-level structures, concrete shear wall split-level structures are used; using sliding-form engineering technology to directly copy construction specifications, it will not be well combined with the actual situation of the project, but the sliding-form efficiency is low. , increasing the difficulty of construction and the danger of later use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an optimized sliding-form structure construction process for a dislocation matrix square warehouse, which optimizes the construction process with the help of BIM simulation working conditions, through stopping sliding, sliding, secondary assembly, steel embedded sleeve connection, etc., The construction problems of matrix warehouses, different elevations and split-level structures have been solved.

In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions: an optimized sliding form structure construction process for a dislocation matrix square warehouse, comprising the following steps: Step 1. Carry out construction preparation, and carry out the steps for each part of the sliding form system respectively. Design, and then carry out BIM simulation construction for the sliding form device;

Step 2. Carry out the construction of the sliding form device, assemble the sliding module, arrange the jack and oil circuit, and conduct quality inspection on the assembled device;

Step 3. After the assembly of the sliding form system is completed, the sliding form construction of the warehouse wall, steel reinforcement construction, concrete pouring and lifting, and then proceed according to the progress plan of the sliding form construction;

Step 4. After the concrete pouring of the warehouse roof is completed, start to dismantle the sliding system. According to the principle of dismantling first, then dismantling, and then cooperate with the tower crane to complete the demolition;

Step 5. Vertical and torsional measurement, construction inspection and monitoring measures.

Preferably, in step 1, the design of the sliding form system includes a hydraulic lifting system, a formwork system, an enclosure, a sliding platform system, a hanging scaffold and a construction precision control system.

Preferably, the enclosure is assembled into a truss type by diagonal braces and straight braces, and the enclosure truss is connected to the support truss of the operating platform.

Preferably, in step 2, the assembly of the sliding mold device includes the following steps:

Step 1. Stake out, purchase, fabricate and bind the steel bars, and conduct re-inspection;

Step 2. Stake out the template system, prepare materials, assemble the open frame and make a circle;

Step 3. Conceal acceptance of the steel structure, install the open frame for template splicing;

Step 4. Stake out the lifting system, prepare materials, test the jack, oil pipe, and oil pump, install the jack, make the support rod, and install the support rod in place;

Step 5. Operate the platform system to stake out, prepare materials, set up platform brackets, lay the platform, set aside the steel beams on the top of the warehouse, and install oil pumps and oil pipes;

Step 6. Install the lighting system, comprehensively accept the sliding formwork system, and repair the bottom of the formwork after the trial slip;

Step 7. The vertical conveyor is installed in place. After acceptance, the load test run, the scaffolding is erected, and the slip form construction stage is entered.

Preferably, in step 3, the sliding form construction of the warehouse wall is carried out, the inner and outer vertical bars are connected by ring bars binding - pre-embedded, reserved - concrete pouring and lifting on the warehouse wall - the surface of the warehouse wall is treated, Maintenance - Vertical, torsional measurement, prevention and correction - Reinforcement of support rods - Remove the slipform system.

Preferably, when special circumstances are encountered during the sliding process of the sliding form and the work is stopped, the construction joints need to be set up according to the specified requirements.

Preferably, when the sliding form system is dismantled, the support rod is reinforced and the excess load slip form is removed, the oil circuit and oil pump are removed - the elevated platform is removed by the tower crane - the operation platform, the railing and the safety net are removed - the inner wall is removed by the tower crane , Outer formwork - remove support, lifting frame, jack - support rod plug.

Preferably, the warehouse wall is maintained by spraying, the hanging scaffold is provided with a ring-shaped PRR pipe, the PRR pipe is provided with a plurality of openings, and the opening direction of the openings is aligned with the concrete surface of the warehouse wall , the PRR pipe is pressurized and connected to the water supply pipe through a booster pump.

Compared with the prior art, the optimized sliding-form structure construction technology for the dislocation matrix square silo that adopts the above-mentioned technical solution has the following beneficial effects: the optimized slip-form structure construction technology for the dislocation matrix square silo of the present invention is adopted, Through BIM simulation of working conditions to optimize the construction process, stop-slip, slip-out and secondary assembly, etc., make difficult projects be easily solved, and the used formwork can be reused after assembly and disassembly.

Description of drawings

Fig. 1 is the process flow diagram of the optimized sliding form structure construction process embodiment of the dislocation matrix square warehouse of the present invention;

Fig. 2 is the process flow diagram of assembling the sliding mold device in the present embodiment;

FIG. 3 is a process flow diagram of dismantling the sliding mold system in this embodiment.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in Figure 1, the process flow chart of the optimized sliding-form structure construction process for the dislocation matrix square warehouse, including the following steps: Step 1. Make construction preparations, design each part of the sliding-form system separately, and design the sliding-form system. Including hydraulic lifting system, formwork system, enclosure, sliding platform system, hanging scaffold and construction precision control system. The enclosure is not only the support system of the formwork, but also bears the construction load of the operation platform and other equipment. It is assembled into a truss type by diagonal braces and straight braces. Then the BIM simulation construction of the sliding form device is carried out.

Step 2. Construct the sliding-form device, assemble the sliding module, and conduct quality inspection on the assembled device. As shown in Figure 2, the process flow chart of assembling the sliding mold device includes the following steps:

(1) Stake out, purchase, fabricate and bind steel bars, and conduct re-inspection;

(2) Stake out the template system, prepare materials, assemble the open frame and make a circle;

(3) Concealed acceptance of steel structure, installation of open frame for template splicing;

(4) Stake out the hoisting system, prepare materials, test the jack, oil pipe, and oil pump, install the jack, make the support rod, and install the support rod in place;

(5) Stake out the platform system, prepare materials, set up platform brackets, lay the platform, set aside the steel beams on the top of the warehouse, and install oil pumps and oil pipes;

(6) Install the lighting system, comprehensively accept the sliding formwork system, and repair the bottom of the formwork after the trial slip;

(7) The vertical conveyor is installed in place. After acceptance, the load test run, the scaffolding is erected, and the slip form construction stage is entered.

Step 3. After the assembly of the sliding form system is completed, the sliding form construction of the warehouse wall, steel reinforcement construction, concrete pouring and lifting, and then proceed according to the progress plan of the sliding form construction. Carry out the sliding form construction of the warehouse wall, and use the inner and outer vertical bars to bind and connect the ring bars; prepare the embedded parts and reserved holes before sliding, and the embedded parts and reserved holes are in charge of the pre-embedded parts and reserved holes. . Once the reserved inserts are out of the mold, they will be chiseled out immediately. Pay attention to the correct position before proceeding, so as not to affect the performance of the warehouse wall. All kinds of pre-embedded reserved parts must not be welded with the ring ribs of the warehouse wall, and the concrete on both sides of the reserved opening must be placed symmetrically. ;Concrete pouring on the warehouse wall and when the sliding form is lifted and the sliding process is stopped in special circumstances, construction joints need to be set up in accordance with the regulations; the surface of the warehouse wall is treated and maintained, and the warehouse wall is maintained by spraying. The hanging scaffold is provided with a ring-shaped PRR pipe. The PRR pipe is provided with a plurality of openings. The opening direction of the openings is aligned with the concrete surface of the warehouse wall. The PRR pipe is pressurized by a booster pump and connected to the water supply pipe. After the assembly is completed, carry out vertical and torsional measurement, prevention and correction; reinforce the support rod. If the process requires that the support rod is completely empty, the support rod should be reinforced, the support rod is required to be vertical, and the joints are welded firmly. During reinforcement, pay attention to keeping the maximum empty length of the support rod above the reinforcement ring and the horizontal tie rod not exceeding 2.2 meters. The support rod at the reserved hole can be reinforced with a steel pipe frame on one side of the support rod. The support rods in the cylinder wall can be welded with short steel bars on the vertical steel bars to form an integral skeleton to reduce the calculated length of the rods. Then remove the slip-form system.

Step 4. Remove the formwork of the warehouse roof. After the concrete of the warehouse roof is poured, the formwork will not be removed immediately, but the superstructure will be constructed first (the concrete of the warehouse roof is in the curing period at this time), and the warehouse will be removed after the superstructure is completed and the concrete reaches the strength of the formwork removal. Roof support system and formwork. After the support system is removed, the steel pipes, fasteners and other materials are transferred to the position of the warehouse roof through the position of the manhole on the roof of the warehouse. Begin to dismantle the sliding system, according to the principle of dismantling first and then dismantling, and then cooperate with the tower crane to complete the dismantling. Figure 3 shows the process flow diagram of the dismantling of the slip form system. When the slip form system is dismantled, the excess load slip form is removed while the support rod is reinforced, and the oil circuit and oil pump are dismantled; the elevated platform is dismantled by a tower crane; Safety net; use tower crane to remove inner and outer formwork; remove support, lifting frame, jack; support rod plug.

Step 5. Vertical and torsional measurement, carry out construction inspection at any time and take monitoring measures. According to the actual situation on site, hang 12 self-made wire hammers on the outrigger platform, and cooperate with the laser theodolite to make red oil marks on the corresponding position of the base surface of the whole board. When sliding, check the relative mark offset value every 90 cm. The project department plans to use steel ruler, line hammer, level and theodolite to monitor the construction process of the formwork system on site. According to the actual situation on site, the project department plans to use steel ruler, line hammer, level and theodolite to monitor the construction process of the formwork system on site.

In this embodiment, for the wheat silo for storing millet, the construction is a cast-in-place reinforced concrete dislocation matrix square silo, the staggered floor of the silo is connected to the reinforced concrete frame structure workshop, and the top of the silo is a high-altitude cast-in-place reinforced concrete slab. The wheat warehouse is 16 conjoined pieces. The axis dimension of each warehouse is 3.7 meters by 3.125 meters, the wall thickness is 160 mm, the height is 23.05 meters, and the elevation ranges from 7.45 meters to 30.50 meters. The bottom of the warehouse is completely closed.

When designing the hydraulic lifting system, 2 sets of YKT-56 hydraulic consoles are used, 120 sets of GYD60 ball-type jacks are used for hydraulic system jacks, and one GYD60 ball-type jack is set for each lifting frame. The barn has a total of 120 lifting racks, each square is 3700 mm by 3125 mm, and each side is equipped with 3 lifting racks. The arrangement is uniform and reasonable. The one stroke is 30 mm and the rated top thrust is 60KN. 50% of the top thrust is calculated as 30KN, which ensures the safe climbing of the entire sliding mode system. The support rod is an ordinary construction steel pipe with a diameter of 48.3 mm by 3.6 mm. The support rod should be installed at two heights of 6 meters and 3 meters for the first time, and the installation should be staggered in sequence, and the joints should not be on the same level. The butt connection of the support rod shall be welded connection, the butt joint of the steel pipe shall be fully welded, and the welding quality requirements must meet the standard of Class II welding seam. After welding, smooth it with an electric wheel grinder. The template circle is tied with the pipe clip hook head screw, and each seam is not less than 2. The inclination of one side of the installed formwork is 0.2 to 0.5% of the formwork height. According to the requirements of the specification, the clear distance at one-half the height of the formwork is the size of the structural section.

The boom of the hanging scaffold is connected by steel pipe fasteners. The upper and lower ends of the boom of the hanging scaffold are tightened with fasteners as anti-skid safety buckles. The connection is then bent into an L shape with 18 steel bars. The two steel pipes connected by the fasteners are welded and strengthened. , to be safe and foolproof. The width of the slab should not be narrower than 30 cm, the thickness should not be less than 4 cm, and the length of the slab should not be less than 4 meters. The inner and outer side of the hanging scaffold must be set with protective railings with a height of not less than 1.2 meters, and the nylon safety net must be firmly hung from the bottom to the overall protective net of the city on both sides. Use a level or a horizontal tube to measure the horizontal plane, set four points on the two axes outside the warehouse wall, and use a line pendant to measure the verticality. In order to ensure that the support rods are vertical when connected, use a level to check the verticality before each support rod is connected, and use a level to check the verticality again after the support rods are welded.

In the BIM demonstration of the sliding-form construction condition of the wheat silo, the actual sliding height of the wheat silo was 22.93m, and 16 silo bodies were assembled at one time for slip-form construction to ensure that there were no horizontal and vertical construction joints in the silo body. The sliding form is assembled, and the 900mm high concrete is poured for the first time; the slide is about 2.m, and the hanging scaffolding is installed; the 300mm high concrete is slid once every time it is poured, and the construction is continued to the top.

The wheat warehouse is assembled on a sliding-form platform. There are 120 lifting frames around the wheat warehouse and the inner shear wall, and the lifting frames are connected and assembled by steel pipes. The outer platform is 1.8 meters wide, and the height of the railing is 1.2 meters. The inner side is built with a rigid full truss. After the sliding platform is assembled, a 40 mm by 40 mm square tube and a 3 mm thick patterned steel plate are laid on it to form an operating platform for construction personnel. The bottom of the sliding-form platform is full of safety nets, and the outer surrounding railings are set with dense mesh safety nets. Concrete is poured in layers of 30 cm, and each layer of concrete must pass four to three layers of pouring time from the beginning of pouring to the end before it is released from the mold. Considering that the time for controlling the mold release time is not more than 5 hours, the allowable time for each layer of concrete pouring is 75 minutes. The oil pipes must be evenly arranged to ensure that the oil feeding speed is synchronous to ensure the quality of the sliding mold.

Before dismantling the support platform, firstly hang the support platform of the warehouse roof on the warehouse roof with steel wire ropes, and then fasten the five-point safety belt to the platform through the manhole, cut off the 22 mm diameter hoisting and pulling steel bars, and hoist the 4-angle hoist. The steel wire rope locks the platform, and then configures a small 2-ton winch at the 4 corners of each warehouse to lower the support platform to the bottom of the warehouse and disassemble it, and remove all materials. The 10 wheat warehouses without openings on the bottom plate shall be transported out from the openings on the top plate by a winch. A manhole of 800 times 800 is reserved in the middle of the 10 warehouse bottom plates, and personnel and materials can enter and exit from this hole, which is safe and convenient. The climbing ladder adopts the scheme of attaching external scaffolding, with a height of 33 meters and a plane size of 4.0 meters by 6.0 meters. Finally, the steel bars of the bottom plate are welded and connected, and the concrete is poured to seal.

The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, without departing from the principles of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention.

Claims (8)

1. an optimized sliding form structure construction technique for dislocation matrix square warehouse, is characterized in that: comprise the steps: Step 1. Carry out construction preparation, design each part of the sliding form system separately, and then carry out BIM simulation construction for the sliding form device; Step 2. Carry out the construction of the sliding form device, assemble the sliding module, arrange the jack and oil circuit, and conduct quality inspection on the assembled device; Step 3. After the assembly of the sliding form system is completed, the sliding form construction of the warehouse wall, steel reinforcement construction, concrete pouring and lifting, and then proceed according to the progress plan of the sliding form construction; Step 4. After the concrete pouring of the warehouse roof is completed, start to dismantle the sliding system. According to the principle of dismantling first, then dismantling, and then cooperate with the tower crane to complete the demolition; Step 5. Vertical and torsional measurement, construction inspection and monitoring measures. 2. The optimized sliding form structure construction technique for dislocation matrix square warehouse according to claim 1, is characterized in that: in step 1, described sliding form system design comprises hydraulic lifting system, formwork system, encirclement, sliding Lifting platform system, hanging scaffold and construction precision control system. 3. The optimized sliding-form structure construction process for a dislocation matrix square warehouse according to claim 2, characterized in that: the enclosure is assembled into a truss type by diagonal braces and straight braces, and the enclosure trusses and the operating platform The supporting trusses are connected. 4. the optimized sliding-form structure construction technique for dislocation matrix square warehouse according to claim 1, is characterized in that: in step 2, carry out the assembling of sliding-form device, comprise the following steps: Step 1. Stake out, purchase, fabricate and bind the steel bars, and conduct re-inspection; Step 2. Stake out the template system, prepare materials, assemble the open frame and make a circle; Step 3. Conceal acceptance of the steel structure, install the open frame for template splicing; Step 4. Stake out the lifting system, prepare materials, test the jack, oil pipe, and oil pump, install the jack, make the support rod, and install the support rod in place; Step 5. Operate the platform system to stake out, prepare materials, set up platform brackets, lay the platform, set aside the steel beams on the top of the warehouse, and install oil pumps and oil pipes; Step 6. Install the lighting system, comprehensively accept the sliding formwork system, and repair the bottom of the formwork after the trial slip; Step 7. The vertical conveyor is installed in place. After acceptance, the load test run, the scaffolding is erected, and the slip form construction stage is entered. 5. the optimized sliding form structure construction technique for dislocation matrix square warehouse according to claim 1, is characterized in that: in step 3, carry out warehouse wall sliding form construction, inside and outside vertical reinforcement, adopt ring reinforcement to bind and connect—— Pre-embedded and reserved - Concrete pouring and lifting of the warehouse wall - Treatment and maintenance of the surface of the warehouse wall - Measurement, prevention and correction of vertical and torsion - Reinforcement of support rods - Remove the slip form system. 6. The optimized sliding form structure construction technique for dislocation matrix square silo according to claim 5, is characterized in that: in the sliding process of described sliding form, when encountering special circumstances and taking shutdown treatment, it needs to be set according to the specified requirements Construction joints. 7. The optimized sliding form structure construction technique for dislocation matrix square silo according to claim 5, it is characterized in that: when the described sliding form system is dismantled, while reinforcing the support rod, remove the excess load slip form, remove the oil circuit, Oil pump - use tower crane to remove elevated platform - remove operating platform, railings, safety net - use tower crane to remove inner and outer formwork - remove support, lifting frame, jack - support rod plug. 8. The optimized sliding-form structure construction technique for dislocation matrix square warehouse according to claim 4, is characterized in that: described warehouse wall is maintained by spraying, and described hanging scaffold is provided with annular PRR pipe, so The PRR pipe is provided with a plurality of openings, the opening directions of the openings are aligned with the concrete surface of the warehouse wall, and the PRR pipe is pressurized and connected to the water supply pipe by a booster pump.