CN112064676A - Movable formwork structure and construction method thereof - Google Patents
Movable formwork structure and construction method thereof Download PDFInfo
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- CN112064676A CN112064676A CN202011056460.8A CN202011056460A CN112064676A CN 112064676 A CN112064676 A CN 112064676A CN 202011056460 A CN202011056460 A CN 202011056460A CN 112064676 A CN112064676 A CN 112064676A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
Abstract
The invention belongs to the technical field of cable groove construction, in particular to a movable formwork structure and a construction method thereof, wherein the construction method comprises the steps of formwork system processing and manufacturing, construction preparation, contact surface treatment, drainage blind pipe installation, reinforcement installation, formwork moving and positioning, pipe embedding part installation and fixation, formwork integral reinforcement and plugging, one-time integral pouring and coagulation, maintenance, formwork removal and formwork moving to enter the next construction section; the construction method has the advantages of simple and convenient construction operation, good quality, high construction speed, high efficiency, low labor intensity, time and labor conservation, low comprehensive construction cost and good economic benefit, and is suitable for the construction of groove structures such as tunnel cable grooves, roadbed drainage ditches and the like.
Description
Technical Field
The invention belongs to the technical field of cable groove construction, and particularly relates to a movable formwork structure and a construction method thereof.
Background
The cable trench is an important building project of a transformer substation and a switching station in a power grid system, and is often built in infrastructures such as tunnels, the construction quality of the cable trench is related to the operation quality of a cable line and the operation life of line equipment, and the sustainability of the cable trench is very important, so that the construction technology of the cable trench is more and more emphasized. Traditional cable trench construction mainly adopts wood former and little piece combination steel mould segmentation construction, and the construction process includes template equipment, reinforcement, concrete placement, template dismantlement, transition, clean scribble oil etc. and takes time and work, and template engineering construction cost is high, and the process is numerous and diverse, and cycle time is long, and it is many to consolidate the support, and the wholeness is poor, and the top surface roughness is wayward, connects the easy percolating water of combed department, and the appearance quality is difficult to control, and the operation face civilization image is not good. Along with the gradual improvement of power infrastructure in China, the construction scale of the cable groove is gradually enlarged, and the traditional cable groove construction technology needs to be innovated and improved urgently to meet the requirement of sustainable development of the power infrastructure.
The third limited liability company of Chongqing construction works relies on the practice of practical engineering projects, develops a movable formwork and a matched shaping formwork according to the actual situation of the site and the bold innovation aiming at the pain point of the construction difficulty, hangs the formworks through a screw rod, moves and adjusts the formworks to the designed position, adopts a positioning clamp to fix the relative position between the formworks and the formwork and the relative position between the formworks and the formwork, pours the structure after the formworks are fixed, and moves the formwork to the position of the next section of concrete pouring through manual pushing or mechanical traction after the structure is formed and demoulded, thereby reasonably optimizing the three construction processes of layering, multiple times and multiple processes of pouring into three construction processes of movable positioning adjustment, clean oiling and integral pouring, greatly improving the construction work efficiency, basically avoiding quality defects, and summarizing the repeated practice of multiple projects, finally, the cable groove construction method based on the novel assembling movable type formwork is high in construction speed, simple to operate, high in quality, low in comprehensive cost and capable of meeting the requirements of 'four sections and one environment', is well praised by owners and the like, and has good popularization and application values.
Disclosure of Invention
In order to make up for the deficiencies of the prior art and solve the problems described in the background art, the invention provides a construction method of a movable formwork structure, which 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.
Preferably, before the construction, a construction preparation is made so as to deal with problems occurring in the construction process, and the construction preparation is:
(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.
Preferably, after the concrete is integrally poured at one time, 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.
A movable formwork structure is suitable for the construction method of the movable formwork structure, and the movable formwork structure 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.
Preferably, 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.
Preferably, 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.
Preferably, a positioning unit is 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.
Preferably, the length of each positioning rod is the same as the depth of a cable groove, a drainage groove and a communication cable groove to be poured, and chamfers are symmetrically arranged at the end parts of each positioning rod.
The invention has the technical effects and advantages that:
1. simple and convenient construction operation and good quality
The template is fixed and adjusted by using the positioning rod, the transverse screw and the vertical screw, the integrity of the template is improved, the requirement on the technical level of the template is not high, the operation intensity of checking procedures such as measurement and size is reduced, the adverse effect of human factors on the appearance quality of the template is greatly eliminated, the construction error is reduced, the top surface flatness is easy to control, the structure appearance quality is ensured, the structure size is reliable, and the construction quality is good.
2. High construction speed, high efficiency, low labor intensity, time and labor saving
The large-block shaped steel die is assembled into an integral system through the prefabricated die frame and the positioning unit, the workload of assembling and transferring the die plates in the prior art by layering and discrete processes is greatly reduced, the workload of operating personnel is reduced, the die plates are dragged to move to the next construction section through machinery or hoisting equipment, the labor intensity of workers is reduced, and the integral construction speed is improved.
3. Low comprehensive construction cost and good economic benefit
The formwork system can be used in a turnover mode, temporary supporting materials in the traditional method are reduced, and the comprehensive construction cost is low.
4. Civilized construction meets the requirements of four-section one-section environment-friendly construction
The construction operation is standard, the pollution of the construction operation area is small, the operation intensity of picking up, cleaning and the like of the construction operation area is reduced, and the civilized construction is obviously improved.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a flow chart of the construction process of the present invention;
fig. 2 is a perspective view showing the structure of the moving mold frame in the present invention;
fig. 3 is a side view of the moving mold frame structure according to the present invention;
fig. 4 is an isometric view of the construction of the mobile formwork in the present invention;
in the figure: the structure comprises a supporting unit 1, a main longitudinal beam 11, an upper cross beam 12, an outer upper longitudinal beam 13, an outer lower longitudinal beam 14, a connecting column 15, a baffle 16, a transverse screw 17, a template unit 2, a power cable groove template 21, a drainage groove template 22, a communication cable groove template 23, a side wall outer template 24, a vertical screw 25, a nut 251, a moving unit 3, a supporting rod 31, a through groove 311, a roller 32, a positioning pin 33, a positioning unit 4, a connecting plate 41, a clamping groove 411, a positioning rod 42 and a fine adjustment screw 43.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.
As shown in fig. 1 to 4, the construction method of the mobile formwork structure according to the present invention includes 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.
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.
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.
A movable formwork structure is suitable for the construction method of the movable formwork structure, and comprises a supporting unit 1 and a formwork unit 2; the supporting unit 1 comprises a main longitudinal beam 11, an upper transverse beam 12, an outer upper longitudinal beam 13, an outer lower longitudinal beam 14 and a connecting column 15; one end of the upper cross beam 12 is vertically and fixedly connected with the side wall of the main longitudinal beam 11, and the other end of the upper cross beam 12 is vertically and fixedly connected with one end of the connecting column 15; the other end of the connecting column 15 is vertically and fixedly connected with an outer side lower longitudinal beam 14, an outer side upper longitudinal beam 13 is vertically and fixedly connected below the connecting column 15 fixedly connected with the upper cross beam 12, the outer side upper longitudinal beam 13 is parallel to the outer side lower longitudinal beam 14, and the plane where the outer side upper longitudinal beam 13 and the outer side lower longitudinal beam 14 are located is parallel to the main longitudinal beam 11; the upper cross beam 12 is provided with a template unit 2; the template unit 2 comprises two power cable groove templates 21, two drainage groove templates 22, two communication cable groove templates 23 and a side wall outer template 24; one end faces of the power cable groove template 21, the drainage groove template 22, the communication cable groove template 23 and the side wall outer template 24 are provided with vertical screws 25, one ends of the vertical screws 25 are fixedly connected to one end faces of the power cable groove template 21, the drainage groove template 22, the communication cable groove template 23 and the side wall outer template 24, and the other ends of the vertical screws 25 penetrate through the upper cross beam 12 and are fixed to the upper end face of the upper cross beam 12 through nuts 251; firstly, a pouring point is always appointed by a movable mould frame, so that a main longitudinal beam 11 is attached to a wall, then an upper nut 251 of a vertical screw 25 is rotated, the vertical screw 25 moves up and down in the vertical direction, meanwhile, the vertical screw 25 moves up and down to drive a template to move up and down, at the moment, an operator adjusts the heights of the upper ends of a cable trench template, a drainage trench template 22, a communication cable trench template 23 and a side wall outer template 24 through the rotating nut 251, so that the templates are all at the same height, after the heights of the templates are adjusted to be consistent, concrete is poured, after the concrete is solidified, the templates are removed, and the movable mould frame is pulled by a machine or a hoisting device to move to the; the movable formwork reasonably optimizes layered, multiple and multi-procedure pouring in the traditional construction process into three construction procedures of movable positioning adjustment, clean oiling and integral pouring, greatly improves the construction efficiency and 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 bar 31, a roller 32, and a positioning pin 33; one end of the support rod 31 is fixedly connected to the side wall of the upper cross beam 12, the other end of the support rod 31 is provided with a through groove 311, the side wall of the through groove 311 is provided with a through hole, a positioning pin 33 penetrates through the through hole, and the outer ring of the positioning pin 33 is rotatably connected with the central position of the roller 32; in the process of moving the movable formwork to the next construction section by the traction of machinery or hoisting equipment, the movable formwork is more easily moved when being dragged to move by the hoisting equipment by using the idler wheels 32.
In one embodiment of the present invention, a baffle 16 is disposed on a plane where the outer side upper longitudinal beam 13 and the outer side lower longitudinal beam 14 are located; the baffle 16 is fixedly connected to the inner side walls of the outer upper longitudinal beam 13 and the outer lower longitudinal beam 14, and two rows of transverse screws 17 are symmetrically arranged on the baffle 16 in the longitudinal direction; one end of the transverse screw 17 penetrates through the baffle 16 and is fixedly connected to the side wall outer template 24, and the outer ring of the transverse screw 17 is fixedly connected to the outer side wall of the baffle 16 through a nut 251; the control of the thickness of the cable groove is realized by rotating the nut 251 of the transverse screw 17, so that the transverse screw 17 pushes and pulls the position of the side wall outer template 24 away from the wall.
As a specific embodiment of the present invention, a positioning unit 4 is disposed between the power cable trench template 21, the drainage trench template 22, and the communication cable trench template 23; the positioning unit 4 comprises a connecting plate 41, a positioning rod 42 and a fine adjustment screw 43; a plurality of clamping grooves 411 are formed in one side of the connecting plate 41, the number of the clamping grooves 411 is equal to the sum of the number of the power cable groove template 21, the number of the drainage groove template 22, the number of the communication cable groove template 23 and the number of the side wall outer template 24, notches of the clamping grooves 411 are connected with fine adjustment screw rods 43 through nuts 251, and one ends of the fine adjustment screw rods 43 are fixedly connected to the upper end faces of the power cable groove template 21, the drainage groove template 22, the communication cable groove template 23 and the side wall outer template 24; the lower plate surface of the connecting plate 41 is fixedly connected with three positioning rods 42, and each positioning rod 42 is inserted between two power cable groove templates 21, two drainage groove templates 22 and two communication cable groove templates 23; by rotating the nut 251 of the fine adjustment screw 43, the nut 251 enables the fine adjustment screw 43 to move up and down, secondary adjustment of the cable trench template, the drainage trench template 22 and the communication cable trench template 23 is achieved, the levelness of the upper end faces of the cable trench template, the drainage trench template 22 and the communication cable trench template 23 is guaranteed, and therefore the quality and the attractiveness of the cast trench are guaranteed.
As a specific embodiment of the present invention, the length of each positioning rod 42 is the same as the depth of a cable groove, a drainage groove and a communication cable groove to be poured, and chamfers are symmetrically formed at the end of each positioning rod 42; in-process, need take care of every locating lever 42 accuracy and insert when the tip of locating lever 42 inserts cable groove, escape canal groove and communication cable inslot, but because the tip of locating lever 42 is the state of flushing, locating lever 42 can block between adjacent template, for this through seting up the chamfer, introduces locating lever 42 between the adjacent template through the chamfer for every locating lever 42 is quick and accurate to insert.
The working principle is as follows: firstly, a pouring point is always appointed by a movable mould frame, so that a main longitudinal beam 11 is attached to a wall, then an upper nut 251 of a vertical screw 25 is rotated, the vertical screw 25 moves up and down in the vertical direction, meanwhile, the vertical screw 25 moves up and down to drive a template to move up and down, at the moment, an operator adjusts the heights of the upper ends of a cable trench template, a drainage trench template 22, a communication cable trench template 23 and a side wall outer template 24 through the rotating nut 251, so that the templates are all at the same height, after the heights of the templates are adjusted to be consistent, concrete is poured, after the concrete is solidified, the templates are removed, and the movable mould frame is pulled by a machine or a hoisting device to move to the; the movable formwork reasonably optimizes layered, multiple and multi-procedure pouring in the traditional construction process into three construction procedure cycles of movable positioning adjustment, clean oiling and integral pouring, greatly improves the construction efficiency and basically eliminates quality defects; and the nut 251 of the transverse screw 17 is rotated, so that the transverse screw 17 pushes and pulls the position of the side wall outer template 24 away from the wall, and the thickness of the cable groove is controlled; meanwhile, the nut 251 of the fine adjustment screw 43 is rotated to enable the fine adjustment screw 43 to move up and down, so that secondary adjustment of the cable trench template, the drainage trench template 22 and the communication cable trench template 23 is achieved, the levelness of the upper end faces of the cable trench template, the drainage trench template 22 and the communication cable trench template 23 is guaranteed, and the quality and the attractiveness of the cast trench are guaranteed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011056460.8A CN112064676A (en) | 2020-09-30 | 2020-09-30 | Movable formwork structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011056460.8A CN112064676A (en) | 2020-09-30 | 2020-09-30 | Movable formwork structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113346412A (en) * | 2021-04-28 | 2021-09-03 | 甘肃路桥建设集团有限公司 | Highway tunnel hogging moment truss cable trench template tractor and manufacturing method thereof |
| CN114017065A (en) * | 2021-11-05 | 2022-02-08 | 中铁三局集团有限公司 | Rapid construction method for cable trough of ditch |
| CN114182756A (en) * | 2021-12-22 | 2022-03-15 | 新疆路桥建设集团有限公司 | Construction method for simply and movably pouring cable trench by using internal mold support system |
| CN115354662A (en) * | 2022-09-14 | 2022-11-18 | 湖北萨莱玛木结构工程有限公司 | Dampproofing construction frock of log cabin ground |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113346412A (en) * | 2021-04-28 | 2021-09-03 | 甘肃路桥建设集团有限公司 | Highway tunnel hogging moment truss cable trench template tractor and manufacturing method thereof |
| CN114017065A (en) * | 2021-11-05 | 2022-02-08 | 中铁三局集团有限公司 | Rapid construction method for cable trough of ditch |
| CN114017065B (en) * | 2021-11-05 | 2024-04-05 | 中铁三局集团有限公司 | Quick construction method for ditch cable trough |
| CN114182756A (en) * | 2021-12-22 | 2022-03-15 | 新疆路桥建设集团有限公司 | Construction method for simply and movably pouring cable trench by using internal mold support system |
| CN115354662A (en) * | 2022-09-14 | 2022-11-18 | 湖北萨莱玛木结构工程有限公司 | Dampproofing construction frock of log cabin ground |
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