CN112064676A - Movable formwork structure and construction method thereof - Google Patents

Abstract

The invention belongs to the technical field of cable trench construction, in particular to a movable formwork structure and a construction method thereof, and the construction method includes the processing and fabrication of a formwork system, construction preparation, contact surface treatment, installation of draining blind pipes, and installation of steel bar binding , The formwork is moved and positioned, the buried pipe fittings are installed and fixed, the formwork is integrally reinforced and blocked, the one-time integral concrete pouring, maintenance and formwork removal and formwork movement into the next construction section steps; the construction method is simple, convenient, and high-quality. Good, fast construction speed, high efficiency, low labor intensity, saving time and labor, low comprehensive construction cost, good economic benefits, suitable for tunnel cable trenches, roadbed drainage trenches and other trench structures.

Description

A mobile formwork structure and its construction method

technical field

The invention belongs to the technical field of cable trench construction, in particular to a movable formwork structure and a construction method thereof.

Background technique

Cable trenches are important construction projects for substations and switch stations in the power grid system, and are often built in infrastructure such as tunnels. The construction quality is related to the operating quality of the cable line and the operating life of the line equipment. Its sustainability is very important. Therefore, more and more attention has been paid to the construction technology of cable trenches. The traditional cable trench construction mainly uses wooden formwork and small combined steel formwork for segmental construction. The construction process includes formwork assembly, reinforcement, concrete pouring, formwork disassembly, transfer, cleaning and oiling, etc., which is time-consuming and labor-intensive, and the construction cost of formwork works. High, complex procedures, long cycle time, many reinforcement supports, poor integrity, difficult to control the flatness of the top surface, easy to leak water at the joints, difficult to control the appearance quality, poor civilized image of the working surface. With the improvement of my country's power infrastructure, the scale of cable trench construction is also expanding. The traditional cable trench construction technology urgently needs innovation and improvement to meet the needs of sustainable development of power infrastructure.

Chongqing Construction Engineering Third Construction Co., Ltd. relies on the practice of actual engineering projects, aiming at the difficulties and pain points of construction, according to the actual situation on the site, boldly innovates, and develops a mobile formwork and matching stereotyped formwork, and hangs the formwork through a screw rod, and then installs the formwork. The template is moved and adjusted to the designed position. The relative position between the template and the template and the relative position between the template and the mold base are fixed by the positioning card device. After the template is fixed, the structure is poured. The formwork is moved as a whole to the position of the next stage of concrete pouring, so that the layered, multiple and multi-process pouring in the traditional construction process is rationally optimized into three construction process cycles of mobile positioning adjustment, cleaning and oiling and overall pouring, which greatly improves the efficiency of the construction process. Construction efficiency basically eliminates quality defects. After repeated practice and summary in multiple projects, a new type of assembly-based mobile type with fast construction speed, simple operation, high quality, low comprehensive cost, and the requirements of "four sections and one environmental protection" has been formed. The cable groove construction method of the formwork has been well received by the owners and other parties, and has good promotion and application value.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art and to solve the problems described in the background technology, the present invention proposes a construction method for a mobile formwork structure, the construction method comprising the following steps:

S1: Mould base system processing and production

According to the site and construction conditions, a frame-type formwork should be used, and the length should be controlled at 8-12 meters. The bottom of the formwork frame is equipped with walking wheels to facilitate walking; the formwork wall panel and bottom form should be processed into one piece, that is, "L-shaped" , so as to facilitate installation and disassembly, and effectively improve the overall rigidity of the formwork; the groove wall panel uses the formwork frame to adopt the hanging method; The positioner column locates the lower edge of the "L-shaped" formwork, which is convenient and easy to install; the outer mold of the groove is jointly positioned by the screw rod on the mold base and the slot on the positioner beam to ensure its verticality;

S2: Contact surface treatment

According to the length of the formwork, chisel and clean the contact surface for 1 to 2 cycles at a time to ensure that the fresh concrete surface is above 75%, and the contact surface between the lining and the groove should also be chiseled to ensure a good combination with the lining surface and avoid groove sliding. and shift;

S3: Drainage blind pipe installation

By measuring and positioning, the Φ107 longitudinal perforated corrugated pipe and the Φ50 circumferential perforated corrugated pipe are led out to the design position in the groove, the ends are fastened and closed with geotextiles and binding wires, and the positioning steel bars are installed to fix the pipe position;

S4: Rebar binding installation

Install the groove side wall reinforcement according to the design, pay attention to the welding quality of the longitudinal grounding reinforcement at the top, and ensure the grounding effect. If the trench is located in the grounding pole section, the grounding reinforcement must be connected to the design position in advance according to the grounding requirements;

S5: Mould base moving and positioning

After the groove formwork is demolded in the previous cycle, the formwork system is retracted, pulled by a loader or a hoist, and slowly travels to the design position of the next cycle. During the moving process, pay attention to adjusting the position of the formwork to ensure that the outside of the formwork is far from the outside of the groove. Keep the wall distance at 40±10cm; move the formwork laterally to the design plane position through the screw rod of the hanging formwork, and then adjust the formwork elevation to the design elevation by screwing the nut on the screw rod; install the septum locator, tighten the positioning Bolts; precise adjustment and control of template position by fine-tuning bolts on the locator;

S6: Installation and fixation of embedded pipe fittings

Adjust the positions of the Φ107 longitudinal perforated corrugated pipe and the Φ50 circumferential perforated corrugated pipe to make it close to the template surface; install the Φ20 horizontal drainage pipe in the groove body and the Φ100 PVC horizontal drainage pipe in the side wall through the holes reserved on the template; The slot is located in the grounding pole section, and the grounding terminal is installed according to the design requirements;

S7: Overall reinforcement and blocking of formwork

In order to strengthen the overall stability of the formwork during the concrete pouring process, steel bars can be implanted on the concrete surface of the leveling layer outside the formwork and diagonal bracing can be installed; Reservation of grooves for water-stop rubber strips; apply mold release agent, check, report for inspection, and prepare for pouring concrete.

S8: One-time integral pouring of concrete

Due to the small cross section of the groove, in order to avoid the concrete contamination of the formwork, it is not possible to directly use a tanker to enter the mold. The edge of the thin steel plate combined with the groove position is made into a "convex and concave" chute, which is convenient for guiding the concrete into the mold and making the concrete pouring in each groove uniform. Symmetric, to ensure that the concrete surface in the mold rises evenly; the concrete is layered and poured symmetrically, and the slump should be controlled between 14 and 16 cm; The attached vibrator shall not touch the steel bars, drainage pipes, and pre-embedded fittings of the grounding terminal.

Preferably, before construction, make construction preparations so as to deal with problems arising during the construction process, and the construction preparations are:

(1), personnel organization preparation

Organize personnel to study the specifications seriously, be familiar with the design drawings, understand the quality requirements of the project and the monitoring content during construction; set up a project management team and a professional construction team, and complete the review and approval procedures at all levels;

(2), technical preparation

a. Organize project management and technical personnel to conduct a joint review of the design drawings, and formulate a special construction plan. Targeted safety, quality and construction period measures should be formulated in the special construction plan;

b. According to the construction drawings combined with the equipment and technical conditions of the unit, formulate a specific operation plan for the overall mobile formwork processing, and propose a material plan;

c. Organize technical personnel and technicians to conduct targeted study on drawings, relevant specifications and atlases, and master the detailed practices;

(3), site preparation

a. Clean up the construction site, clean the construction site, remove scale, dust, oil and sundries, and remove obstacles;

b. Understand the conditions of the surrounding buildings on the construction site, and avoid affecting the safety of adjacent buildings during the construction process;

(4), material and equipment preparation

a. Reasonable selection of machinery to ensure complete use of functions; inspection of the performance of construction machinery and testing equipment to ensure that various machinery and equipment are in good working condition during the construction process;

b. In addition to the quality certificate, the materials used should also be re-inspected according to the provisions of the current national standards and used after meeting the standards;

c. After the materials enter the site, the variety, specification and quantity of each material should be checked, and they should be stacked and kept at the designated place to facilitate subsequent construction.

Preferably, after the concrete is poured as a whole, the concrete should be protected after the concrete is solidified to prevent the concrete from cracking and faulting; after the concrete is poured, it should be covered with geotextile, sprinkled with water for moisturizing and curing, and the curing time should not be less than 12 hours; demoulding: Loosen the positioning bolts and fine-tuning bolts, and remove the positioner; tap the vibration template with a small hammer to separate the template from the concrete; adjust the suspension screw to make the two templates in the groove go up and down and then fold up, lift, and remove the formwork ; The concrete surface is covered with geotextile, and the curing time is more than 7 days.

A mobile formwork structure, the mobile formwork structure is suitable for the above-mentioned construction method of the mobile formwork structure, and the mobile formwork structure includes a support unit and a formwork unit; the support unit includes a main longitudinal beam, an upper beam, and an outer upper longitudinal beam , the outer lower longitudinal beam and the connecting column; one end of the upper beam is vertically fixed to the side wall of the main longitudinal beam, and the other end of the upper beam is vertically fixed to one end of the connecting column; the other end of the connecting column is vertically fixed to the outer lower longitudinal beam The lower side where the connecting column is fixed to the upper cross beam is vertically fixed to the outer upper longitudinal beam, and the outer upper longitudinal beam is parallel to the outer lower longitudinal beam, and the plane where the outer upper longitudinal beam and the outer outer lower longitudinal beam are located is parallel to the main longitudinal beam; the The formwork unit is arranged on the upper beam; the formwork unit includes two power cable groove formwork, two drainage groove formwork, two communication cable groove formwork and one side wall external formwork; the power cable groove formwork, One end of the drainage groove formwork, the communication cable groove formwork and the outer formwork of the side wall is provided with a vertical screw, and one end of the vertical screw is fixed to the power cable groove formwork, the drainage groove formwork, the communication cable groove formwork and the One end face of the outer formwork of the side wall, the other end of the vertical screw penetrates the upper beam and is fixed on the upper end face of the upper beam by a nut.

Preferably, the upper beam is provided with a moving unit; the moving unit includes a support rod, a roller and a positioning pin; one end of the support rod is fixed on the side wall of the upper beam, and the other end of the support rod is provided with a through slot The side wall of the through groove is provided with a through hole, a positioning pin is inserted through the through hole, and the outer ring of the positioning pin rotates to connect the center position of the roller.

Preferably, baffles are arranged on the plane where the outer upper longitudinal beam and the outer lower longitudinal beam are located; the baffles are fixed on the inner side walls of the outer upper longitudinal beam and the outer lower longitudinal beam, and the baffles are symmetrically arranged in the longitudinal direction. Two rows of transverse screws; one end of the transverse screws penetrates the baffle and is fixed to the outer formwork of the side wall, and the outer ring of the transverse screws is fixed to the outer side wall of the baffle through nuts.

Preferably, a positioning unit is provided between the power cable groove template, the drainage groove template, and the communication cable groove template; the positioning unit includes a connecting plate, a positioning rod and a fine-tuning screw; one side of the connecting plate is provided with Multiple card slots, the number of card slots is the same as the sum of the power cable groove template, the drainage groove template, the communication cable groove template and the side wall outer template. One end is fixedly connected to the upper end face of the power cable groove formwork, the drainage groove formwork, the communication cable groove formwork and the outer formwork of the side wall; Insert between two power cable trench templates, two drainage trench templates, and two communication cable trench templates.

Preferably, the length of each of the positioning rods is the same as the depth of the cable groove, the drainage groove and the communication cable groove to be poured, and the ends of each positioning rod are symmetrically chamfered.

Technical effects and advantages of the present invention:

1. The construction operation is simple and convenient, and the quality is good

The use of positioning rods, horizontal screws, and vertical screw parts to fix and adjust the template improves the integrity of the template, does not require high technical level of template workers, reduces the work intensity of calibration procedures such as measurement and ruler measurement, and greatly eliminates the need for The adverse effect of human factors on the appearance quality of the formwork reduces the construction error, the flatness of the top surface is easy to control, and the appearance quality of the structure is guaranteed, the structure size is reliable, and the construction quality is good.

2. Fast construction speed, high efficiency, low labor intensity, saving time and labor

The prefabricated formwork and positioning unit are used to assemble the large shaped steel formwork into a whole system, which greatly reduces the workload of the previous layered, sub-process scattered formwork and steel formwork assembly and formwork transfer, and reduces the number of operators, through mechanical or The hoisting equipment is pulled and moved to the next construction section, which reduces the labor intensity of workers and improves the overall construction speed.

3. The comprehensive construction cost is low and the economic benefit is good

The formwork system can be used in turnaround, reducing the temporary support materials in the traditional method, and the comprehensive construction cost is low.

4. Civilized construction, in line with the requirements of four sections and one environmental protection and green construction

The construction work is standardized, and the pollution in the construction work area is small, which reduces the work intensity of cleaning and cleaning in the construction work area, and the civilized construction is significantly improved.

Description of drawings

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

Fig. 1 is the construction process flow chart in the present invention;

Fig. 2 is the perspective view of the mobile formwork structure in the present invention;

Fig. 3 is the side view of the mobile formwork structure in the present invention;

Fig. 4 is the isometric view of the mobile formwork structure in the present invention;

In the figure: support unit 1, main longitudinal beam 11, upper beam 12, outer upper longitudinal beam 13, outer lower longitudinal beam 14, connecting column 15, baffle 16, transverse screw 17, template unit 2, power cable groove template 21 , Drainage groove formwork 22, Communication cable groove formwork 23, Side wall external formwork 24, Vertical screw 25, Nut 251, Mobile unit 3, Support rod 31, Through groove 311, Roller 32, Positioning pin 33, Positioning unit 4 , connecting plate 41 , card slot 411 , positioning rod 42 , fine adjustment screw 43 .

Detailed ways

In order to make it easy to understand the technical means, creative features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the embodiments.

As shown in Figure 1 to Figure 4, the construction method of a mobile formwork structure according to the present invention, the construction method comprises the following steps:

S1: Mould base system processing and production

According to the site and construction conditions, a frame-type formwork should be used, and the length should be controlled at 8-12 meters. The bottom of the formwork frame is equipped with walking wheels to facilitate walking; the formwork wall panel and bottom form should be processed into one piece, that is, "L-shaped" , so as to facilitate installation and disassembly, and effectively improve the overall rigidity of the formwork; the groove wall panel uses the formwork frame to adopt the hanging method; The positioner column locates the lower edge of the "L-shaped" formwork, which is convenient and easy to install; the outer mold of the groove is jointly positioned by the screw rod on the mold base and the slot on the positioner beam to ensure its verticality;

S2: Contact surface treatment

According to the length of the formwork, chisel and clean the contact surface for 1 to 2 cycles at a time to ensure that the fresh concrete surface is above 75%, and the contact surface between the lining and the groove should also be chiseled to ensure a good combination with the lining surface and avoid groove sliding. and shift;

S3: Drainage blind pipe installation

By measuring and positioning, the Φ107 longitudinal perforated corrugated pipe and the Φ50 circumferential perforated corrugated pipe are led out to the design position in the groove, the ends are fastened and closed with geotextiles and binding wires, and the positioning steel bars are installed to fix the pipe position;

S4: Rebar binding installation

Install the groove side wall reinforcement according to the design, pay attention to the welding quality of the longitudinal grounding reinforcement at the top, and ensure the grounding effect. If the trench is located in the grounding pole section, the grounding reinforcement must be connected to the design position in advance according to the grounding requirements;

S5: Mould base moving and positioning

After the groove formwork is demolded in the previous cycle, the formwork system is retracted, pulled by a loader or a hoist, and slowly travels to the design position of the next cycle. During the moving process, pay attention to adjusting the position of the formwork to ensure that the outside of the formwork is far from the outside of the groove. Keep the wall distance at 40±10cm; move the formwork laterally to the design plane position through the screw rod of the hanging formwork, and then adjust the formwork elevation to the design elevation by screwing the nut on the screw rod; install the septum locator, tighten the positioning Bolts; precise adjustment and control of template position by fine-tuning bolts on the locator;

S6: Installation and fixation of embedded pipe fittings

Adjust the positions of the Φ107 longitudinal perforated corrugated pipe and the Φ50 circumferential perforated corrugated pipe to make it close to the template surface; install the Φ20 horizontal drainage pipe in the groove body and the Φ100 PVC horizontal drainage pipe in the side wall through the holes reserved on the template; The slot is located in the grounding pole section, and the grounding terminal is installed according to the design requirements;

S7: Overall reinforcement and blocking of formwork

In order to strengthen the overall stability of the formwork during the concrete pouring process, steel bars can be implanted on the concrete surface of the leveling layer outside the formwork and diagonal bracing can be installed; Reservation of grooves for water-stop rubber strips; apply mold release agent, check, report for inspection, and prepare for pouring concrete.

S8: One-time integral pouring of concrete

Due to the small cross section of the groove, in order to avoid the concrete contamination of the formwork, it is not possible to directly use a tanker to enter the mold. The edge of the thin steel plate combined with the groove position is made into a "convex and concave" chute, which is convenient for guiding the concrete into the mold and making the concrete pouring in each groove uniform. Symmetric, to ensure that the concrete surface in the mold rises evenly; the concrete is layered and poured symmetrically, and the slump should be controlled between 14 and 16 cm; The attached vibrator shall not touch the steel bars, drainage pipes, and pre-embedded fittings of the grounding terminal.

Before construction, make construction preparations in order to deal with the problems that arise during the construction process, and the construction preparations are:

(1), personnel organization preparation

Organize personnel to study the specifications seriously, be familiar with the design drawings, understand the quality requirements of the project and the monitoring content during construction; set up a project management team and a professional construction team, and complete the review and approval procedures at all levels;

(2), technical preparation

a. Organize project management and technical personnel to conduct a joint review of the design drawings, and formulate a special construction plan. Targeted safety, quality and construction period measures should be formulated in the special construction plan;

b. According to the construction drawings combined with the equipment and technical conditions of the unit, formulate a specific operation plan for the overall mobile formwork processing, and propose a material plan;

c. Organize technical personnel and technicians to conduct targeted study on drawings, relevant specifications and atlases, and master the detailed practices;

(3), site preparation

a. Clean up the construction site, clean the construction site, remove scale, dust, oil and sundries, and remove obstacles;

b. Understand the conditions of the surrounding buildings on the construction site, and avoid affecting the safety of adjacent buildings during the construction process;

(4), material and equipment preparation

a. Reasonable selection of machinery to ensure complete use of functions; inspection of the performance of construction machinery and testing equipment to ensure that various machinery and equipment are in good working condition during the construction process;

b. In addition to the quality certificate, the materials used should also be re-inspected according to the provisions of the current national standards and used after meeting the standards;

c. After the materials enter the site, the variety, specification and quantity of each material should be checked, and they should be stacked and kept at the designated place to facilitate subsequent construction.

After the concrete is poured as a whole, the concrete should be protected after the concrete is solidified to prevent the concrete from cracking and faulting; after the concrete is poured, it should be covered with geotextile, sprinkled with water for moisturizing and curing, and the curing time should not be less than 12 hours; formwork removal: loosen the positioning Bolts and fine-tuning bolts, remove the locator; tap the vibrating formwork with a small hammer to separate the formwork from the concrete; adjust the suspension screw to make the two formwork in the groove fold up and down, lift, and remove the formwork; the concrete surface Covered with geotextiles, the curing time is more than 7 days.

A mobile formwork structure, the mobile formwork structure is suitable for the above-mentioned construction method of the mobile formwork structure, and the mobile formwork structure includes a support unit 1 and a formwork unit 2; the support unit 1 includes a main longitudinal beam 11 and an upper beam 12. , the outer upper longitudinal beam 13, the outer lower longitudinal beam 14 and the connecting column 15; one end of the upper transverse beam 12 is vertically fixed to the side wall of the main longitudinal beam 11, and the other end of the upper transverse beam 12 is vertically fixed to one end of the connecting column 15; The other end of the connecting column 15 is vertically fixed to the outer side lower longitudinal beam 14, the lower side where the connecting column 15 is fixed to the upper cross beam 12 is vertically fixed to the outer side upper longitudinal beam 13, and the outer upper longitudinal beam 13 is parallel to the outer side lower longitudinal beam 14, The plane where the outer upper longitudinal beam 13 and the outer lower longitudinal beam 14 are located is parallel to the main longitudinal beam 11; the template unit 2 is arranged on the upper beam 12; the template unit 2 includes two power cable groove templates 21, two drainage ditches Slot formwork 22, two communication cable groove formwork 23 and one side wall outer formwork 24; The end face is provided with a vertical screw 25, and one end of the vertical screw 25 is fixed to one end of the power cable groove formwork 21, the drainage groove formwork 22, the communication cable groove formwork 23 and the side wall external formwork 24. The other end of the 25 penetrates the upper beam 12 and is fixed on the upper end face of the upper beam 12 by the nut 251; first, the mobile formwork is always designated as the pouring point, so that the main longitudinal beam 11 is attached to the wall, and then the upper part of the vertical screw 25 is rotated. The nut 251 makes the vertical screw 25 move up and down in the vertical direction, and the vertical movement of the vertical screw 25 drives the template to move up and down. At this time, the operator adjusts the cable groove template, the drainage groove template 22, the communication cable by rotating the nut 251 The height of the upper end of the groove formwork 23 and the outer formwork 24 of the side wall, so that the formwork is at the same height. After the formwork height is adjusted to the same height, pour the concrete. After the concrete solidifies, remove the formwork and move the formwork by mechanical or hoisting equipment. Move to the next construction section; the mobile formwork rationally optimizes the layered, multiple and multi-process pouring in the traditional construction process into three construction process cycles of mobile positioning adjustment, cleaning and oiling and overall pouring, which greatly improves the construction work efficiency. , which basically eliminates quality defects.

As a specific embodiment of the present invention, the upper beam 12 is provided with a moving unit 3; the moving unit 3 includes a support rod 31, a roller 32 and a positioning pin 33; one end of the support rod 31 is fixed on the upper On the side wall of the beam 12, the other end of the support rod 31 is provided with a through slot 311, the side wall of the through slot 311 is provided with a through hole, the through hole penetrates the positioning pin 33, and the outer ring of the positioning pin 33 rotates to connect the center position of the roller 32 ; During the process of pulling the mobile formwork to the next construction section by mechanical or hoisting equipment, by using the rollers 32, the moving formwork is easier to move when the mobile formwork is pulled and moved by the hoisting equipment.

As a specific embodiment of the present invention, a baffle plate 16 is provided on the plane where the outer upper longitudinal beam 13 and the outer lower longitudinal beam 14 are located; the baffle plate 16 is fixedly connected to the outer upper longitudinal beam 13 and the outer outer lower longitudinal beam 14 On the inner side wall, the baffle 16 is symmetrically provided with two rows of transverse screws 17 in the longitudinal direction; one end of the transverse screw 17 penetrates the baffle 16 and is fixed to the outer formwork 24 of the side wall, and the outer ring of the transverse screw 17 passes through the nut 251. It is fixed on the outer side wall of the baffle 16; by rotating the nut 251 of the transverse screw 17, the transverse screw 17 pushes and pulls the position of the outer formwork 24 of the side wall away from the wall, so as to control the thickness of the cable groove.

As a specific embodiment of the present invention, a positioning unit 4 is provided between the power cable trench template 21, the drainage trench template 22, and the communication cable trench template 23; the positioning unit 4 includes a connecting plate 41, a positioning unit Rod 42 and fine-tuning screw 43; one side of the connecting plate 41 is provided with a plurality of card slots 411, the number of the card slots 411 is the same as the power cable groove template 21, the drainage groove template 22, the communication cable groove template 23 and the side wall The sum of the 24 outer templates is the same, the notch of the card slot 411 is connected to the fine-tuning screw 43 through the nut 251, and one end of the fine-tuning screw 43 is fixed to the power cable groove template 21, the drainage groove template 22, the communication cable groove template 23 and The upper end surface of the outer formwork 24 of the side wall; the lower surface of the connecting plate 41 is fixed with three positioning rods 42, and each positioning rod 42 is inserted into two power cable groove formwork 21 and two drainage groove formwork 22 respectively. and the two communication cable groove templates 23; by rotating the nut 251 of the fine adjustment screw 43, the nut 251 makes the fine adjustment screw 43 move up and down to realize the pairing of the cable groove template, the drainage groove template 22 and the communication cable groove template 23 Carry out secondary adjustment to ensure the flushness of the upper end faces of the cable groove formwork, the drainage groove formwork 22 and the communication cable groove formwork 23, so as to ensure the quality and appearance of the grooves after pouring.

As a specific embodiment of the present invention, the length of each positioning rod 42 is the same as the depth of the cable groove, drainage groove and communication cable groove to be poured, and the end of each positioning rod 42 is symmetrically opened and inverted angle; when the end of the positioning rod 42 is inserted into the cable groove, the drainage groove and the communication cable groove, it is necessary to take care of the accurate insertion of each positioning rod 42, but since the end of the positioning rod 42 is in a flush state, The positioning rods 42 will be stuck between the adjacent templates. For this purpose, by opening a chamfer, the positioning rods 42 are introduced between the adjacent templates through the chamfering, so that each positioning rod 42 can be inserted quickly and accurately.

Working principle: First, the mobile mold base is always designated as the pouring point, so that the main longitudinal beam 11 is attached to the wall, and then the upper nut 251 of the vertical screw 25 is rotated, so that the vertical screw 25 moves up and down in the vertical direction, and at the same time vertically The up and down movement of the screw 25 drives the formwork to move up and down. At this time, the operator adjusts the height of the cable groove formwork, the drainage groove formwork 22, the communication cable groove formwork 23 and the upper end of the side wall external formwork 24 by rotating the nut 251, so that the formwork is all in the upper end. At the same height, after the height of the formwork is adjusted to the same level, pour the concrete. After the concrete is solidified, remove the formwork and move the mobile formwork to the next construction section by pulling the mechanical or hoisting equipment; , The reasonable optimization of multiple and multi-process pouring is three construction process cycles of mobile positioning adjustment, cleaning and oiling and overall pouring, which greatly improves the construction efficiency and basically eliminates quality defects; and over-rotating the nut 251 of the transverse screw 17 makes the The transverse screw 17 pushes and pulls the position of the outer formwork 24 of the side wall from the wall to realize the control of the thickness of the cable groove; at the same time, by rotating the nut 251 of the fine-tuning screw 43, the nut 251 makes the fine-tuning screw 43 move up and down to realize the alignment of the cable groove. The formwork, the drainage groove formwork 22 and the communication cable groove formwork 23 are readjusted to ensure the flushness of the upper end faces of the cable groove formwork, the drainage groove formwork 22 and the communication cable groove formwork 23, so as to ensure the groove after pouring. quality and aesthetics.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. A construction method of a movable formwork structure is characterized in that: the construction method comprises the following steps:

s1: die carrier system processing and manufacturing

According to the field and construction conditions, a frame type formwork is adopted, the length is controlled to be 8-12 m, and walking wheels are installed at the bottom of the formwork frame, so that the walking is convenient to walk; the wall panel and the bottom die of the die frame are integrally processed, namely, the wall panel and the bottom die are L-shaped, so that the wall panel and the bottom die are convenient to mount and dismount, and the overall rigidity of the die plate is effectively improved; the groove wall panel adopts a suspension mode by utilizing a mould frame; the groove middle partition positioner positions the upper edge of the L-shaped template through a clamping groove on a cross beam of the groove middle partition positioner, and the positioner upright post positions the lower edge of the L-shaped template, so that the groove middle partition positioner is convenient and easy to install; the groove outer side die is jointly positioned through a screw rod on the die frame and a clamping groove on a positioner cross beam, so that the verticality of the groove outer side die is ensured;

s2: treatment of contact surfaces

According to the length of the formwork, roughening and cleaning 1-2 contact surfaces with the cycle length at one time to ensure that the fresh concrete surface is over 75 percent, roughening the contact surface of the lining and the groove to ensure good combination with the lining surface and avoid the sliding and displacement of the groove;

s3: drainage blind pipe installation

Through measurement and positioning, leading out a phi 107 longitudinal perforated corrugated pipe and a phi 50 circumferential perforated corrugated pipe to the designed positions in the grooves, tightly binding and sealing the ends by adopting geotextile and binding wires, and installing positioning reinforcing steel bars to fix the pipe positions;

s4: installation of reinforcement

Installing groove side wall reinforcing steel bars according to design, paying attention to the welding quality of top longitudinal grounding reinforcing steel bars, and ensuring the grounding effect;

s5: moving and positioning die carrier

After the last cycle of demolding, the groove mold frame is retracted by a template system, is dragged by a loader or a winch and slowly moves to the next cycle design position, and during the moving process, the position of the mold frame is adjusted by attention to ensure that the distance from the outer side of the mold frame to the outer side wall of the groove is kept at 40 +/-10 cm; transversely moving the template to a designed plane position through a lead screw for suspending the template, and adjusting the elevation of the template to a designed elevation through screwing a nut on the lead screw; installing an intermediate partition positioner and screwing down a positioning bolt; the position of the template is accurately adjusted and controlled through a fine adjustment bolt on the positioner;

s6: mounting and fixing of embedded pipe

Adjusting the positions of a phi 107 longitudinal punching corrugated pipe and a phi 50 circumferential punching corrugated pipe to enable the corrugated pipes to be closely attached to the surface of the template; installing a groove body phi 20 transverse drainage pipe and a phi 100PVC transverse drainage pipe in a side wall through a hole reserved on the template; if the groove is positioned in the grounding electrode section, a grounding terminal is installed according to design requirements;

s7: integral reinforcement and plugging of die carrier

In order to enhance the overall stability of the formwork in the concrete pouring process, reinforcing steel bars can be implanted into the concrete surface of the leveling layer outside the formwork and diagonal braces can be installed for reinforcement; installing an integral end-sealing steel die to ensure the reservation of longitudinal reinforcing steel bars of the side wall and a water-stopping adhesive tape groove at the end of the groove; and (4) coating a release agent, checking and reporting, and preparing to pour concrete.

S8: disposable integral casting concrete

Because the section of the groove is small, in order to avoid concrete pollution on the die carrier, the concrete can not be directly poured into the die by a tank car, the edge of the thin steel plate is combined with the position of the groove to form a 'convex-concave' chute, so that the concrete can be conveniently guided into the die, the concrete in each groove is uniformly and symmetrically poured, and the uniform rising of the concrete surface in the die is ensured; concrete is layered and symmetrically poured and is formed in one step, and the slump is controlled to be 14-16 cm; the pouring process is not too fast, and the mold frame is prevented from floating upwards; the embedded pipe fittings of the reinforcing steel bars, the drain pipes and the grounding terminals are not contacted with the embedded pipe fittings by adopting an inserted vibrating rod or an attached vibrator for tamping.

2. The construction method of the movable formwork structure according to claim 1, wherein: before construction, construction preparation is made so as to deal with problems occurring in the construction process, and the construction preparation is as follows:

(1) personnel organization preparation

The organization personnel carefully learns the specification, is familiar with the design drawing and knows the quality requirement of the project and the monitoring content in the construction; establishing a project management group and a professional construction team group, and completing all levels of auditing and approving procedures;

(2) preparation of the technique

a. Organizing project management and technical personnel to review the design drawings and compiling a special construction scheme, wherein specific safety, quality and construction period measures are made in the special construction scheme;

b. according to construction drawings and equipment and technical conditions of units, a specific operation scheme for processing the integral movable template is worked out, and a material plan is proposed;

c. organizing technicians and technicians to carry out targeted learning on drawings, relevant specifications and drawing sets and master detailed methods;

(3) site preparation

a. Cleaning a construction site, cleaning the construction site, removing scale, dust, oil stains and sundries, and removing obstacles;

b. the conditions of surrounding buildings at the construction site are known, and the influence on the safety of adjacent buildings is avoided in the construction process;

(4) material machine preparation

a. The machinery is reasonably selected, and the use function is ensured to be complete; the performance of the construction machinery and the detection equipment is checked, and the working state of various machines and tools in the construction process is ensured to be good;

b. the used materials are subject to the quality certificate and the retest certificate according to the regulations of the current national standard, and are used after meeting the standard;

c. after the materials enter the site, the variety, the specification and the quantity of each material are checked, and the materials are stacked and stored in a designated place so as to facilitate subsequent construction.

3. The construction method of the movable formwork structure according to claim 1, wherein: after the concrete is integrally poured once, the concrete is protected after the concrete is solidified so as to prevent the concrete from cracking and breaking; after concrete pouring is finished, geotextile is adopted for covering, watering is adopted for moisturizing and maintaining, and the maintaining time is not less than 12 hours; removing the mold: loosening the positioning bolt and the fine adjustment bolt, and dismantling the positioner; knocking and vibrating the template by a small hammer to separate the template from the concrete; adjusting the suspension screw rod to enable the two templates in the groove to be folded up after one template is placed on top of the other template, lifting and removing the die carrier; the concrete surface is covered with geotextile, and the curing time is more than 7 days.

4. A movable mould frame structure is characterized in that: the movable formwork structure is suitable for the construction method of the movable formwork structure in any one of claims 1 to 3, and comprises a supporting unit and a formwork unit; the supporting unit comprises a main longitudinal beam, an upper cross beam, an outer side upper longitudinal beam, an outer side lower longitudinal beam and a connecting column; one end of the upper cross beam is vertically and fixedly connected with the side wall of the main longitudinal beam, and the other end of the upper cross beam is vertically and fixedly connected with one end of the connecting column; the other end of the connecting column is vertically and fixedly connected with an outer side lower longitudinal beam, the lower part of the connecting column fixedly connected with the upper transverse beam is vertically and fixedly connected with an outer side upper longitudinal beam, the outer side upper longitudinal beam is parallel to the outer side lower longitudinal beam, and the plane of the outer side upper longitudinal beam and the plane of the outer side lower longitudinal beam are parallel to the main longitudinal beam; the upper cross beam is provided with a template unit; the template unit comprises two power cable groove templates, two drainage groove templates, two communication cable groove templates and a side wall outer template; the utility model discloses a side wall outer form, including power cable groove template, escape canal groove template, communication cable groove template and side wall outer form, the terminal surface of power cable groove template, escape canal groove template, communication cable groove template and side wall outer form is equipped with vertical screw rod, and the one end rigid coupling of vertical screw rod is at the terminal surface of power cable groove template, escape canal groove template, communication cable groove template and side wall outer form, and the other end of vertical screw rod runs through the entablature and fixes the up end at the entablature through the nut.

5. A mobile formwork structure as claimed in claim 4, wherein: the upper cross beam is provided with a moving unit; the moving unit comprises a supporting rod, a roller and a positioning pin; one end of the supporting rod is fixedly connected to the side wall of the upper cross beam, the other end of the supporting rod is provided with a through groove, the side wall of the through groove is provided with a through hole, a positioning pin penetrates through the through hole, and the outer ring of the positioning pin is rotatably connected with the central position of the roller.

6. A mobile formwork structure as claimed in claim 4, wherein: the planes of the outer side upper longitudinal beam and the outer side lower longitudinal beam are provided with baffle plates; the baffle is fixedly connected to the inner side walls of the outer upper longitudinal beam and the outer lower longitudinal beam, and two rows of transverse screws are symmetrically arranged on the baffle in the longitudinal direction; one end of the transverse screw penetrates through the baffle and is fixedly connected to the side wall outer template, and the outer ring of the transverse screw is fixedly connected to the outer side wall of the baffle through a nut.

7. A mobile formwork structure as claimed in claim 4, wherein: positioning units are arranged among the power cable groove template, the drainage groove template and the communication cable groove template; the positioning unit comprises a connecting plate, a positioning rod and a fine adjustment screw rod; a plurality of clamping grooves are formed in one side of the connecting plate, the number of the clamping grooves is the same as the sum of the number of the power cable groove template, the number of the drainage groove template, the number of the communication cable groove template and the number of the side wall outer templates, notches of the clamping grooves are connected with fine adjustment screws through nuts, and one ends of the fine adjustment screws are fixedly connected to the upper end faces of the power cable groove template, the drainage groove template, the communication cable groove template and the side wall outer templates; the lower plate surface of the connecting plate is fixedly connected with three positioning rods, and each positioning rod is inserted between two power cable groove templates, two drainage groove templates and two communication cable groove templates.

8. The mobile formwork structure defined in claim 7 wherein: the length of each locating rod is the same as the depth of a power cable groove, a drainage groove and a communication cable groove to be poured, and chamfers are symmetrically arranged at the end parts of each locating rod.

Images