CN-115717475-B - Concrete dome formwork construction method

CN115717475BCN 115717475 BCN115717475 BCN 115717475BCN-115717475-B

Abstract

The invention discloses a concrete dome formwork construction method which comprises a steel pipe, a first suspension rod, a second suspension rod, a third suspension rod, a first inner inclined rod, a second inner inclined rod and a pull rod, wherein two ends of the steel pipe are respectively provided with a perforated lug plate, a lantern ring is arranged on the perforated lug plate Kong Er, a limit clamp is arranged on the steel pipe, and a thread sleeve is arranged on the limit clamp. The screw sleeve at the lower part of the steel pipe is screwed, the sleeve ring is gradually lifted, the lower end position of the first inner inclined rod is lifted, the upper end of the first inner inclined rod is lifted to enable the second suspension rod to lift the third suspension rod, after the third suspension rod is lifted to a designated position, screwing of the screw sleeve is stopped, the included angle between the first suspension rod and the first inner inclined rod is reduced, the pull rod is pulled, the first suspension rod is driven to rotate around the hinge point of the first suspension rod, and the whole structure is expanded and lifted. The invention has the advantages of exquisite, light and efficient integral structure, easy installation and disassembly, lighter weight and convenient hoisting compared with a larger grid structure supporting system, and can be hoisted and lifted in place after being assembled on the ground or a platform, thereby being simpler and more convenient in construction.

Inventors

KANG FEI
TANG YAOQING
Gan Annan
Ding Guojia

Assignees

中冶建工集团有限公司

Dates

Publication Date: 20260508
Application Date: 20221130

Claims (9)

1. A concrete dome formwork construction method is characterized by comprising the following steps: the construction method comprises the steps of S1, preparing construction, wherein the construction method comprises the steps of comprising a steel pipe, a first suspension rod, a second suspension rod, a third suspension rod, a first inner inclined rod, a second inner inclined rod and a pull rod, wherein earplates with holes are respectively arranged at two ends of the steel pipe, lantern rings are arranged on the plates with Kong Er, limiting clamps are arranged on the steel pipe, and threaded sleeves are arranged on the limiting clamps; S2, preliminary assembly, wherein one end of a first suspension rod is hinged on a belt Kong Er plate at the upper end of a steel pipe, the other end of the first suspension rod is hinged on a second outer suspension rod, one end of a first inner inclined rod is hinged on a belt Kong Er plate at the lower end of the steel pipe, the other end of the first inner inclined rod is hinged on the first inner inclined rod, the other end of the second inner inclined rod is hinged with the second suspension rod, one end of a pull rod is hinged on the first suspension rod, the other end of the pull rod is hinged with a third suspension rod, and one end of the third suspension rod far away from the pull rod is hinged with a spiral sleeve; S3, jacking and expanding, namely screwing a threaded sleeve at the lower part of the steel pipe, gradually jacking the lantern ring, lifting the lower end position of the first inner diagonal rod, jacking the second suspension rod at the upper end of the first inner diagonal rod to enable the third suspension rod to ascend, and stopping screwing the threaded sleeve after jacking to a specified position; S4, integral hoisting, namely arranging a hook on a plate with Kong Er at the upper end of the steel pipe, slowly and stably hoisting the whole structure by using hoisting equipment through the hook, ensuring that the whole structure is safely and stably hoisted to a dome position, and extending the effective length of the first suspension rod by screwing a threaded sleeve at the lower end of the suspension rod after the whole structure is hoisted to a designated position; S5, constructing an inflatable bottom die, namely tensioning the inflatable bottom die on the top surface of the whole structure after hoisting the whole structure, hanging the top center of the inflatable bottom die on a belt Kong Er plate of a top end hole of a steel pipe, respectively hanging the edges of the lower part of the inflatable bottom die on the outer sides of the hinged positions of the lower ends of the first suspension rod and the third suspension rod, and inflating the inflatable bottom die after the construction of reinforcing steel bars on the inflatable bottom die is completed; And S6, after the concrete pouring is completed, the sling is utilized to penetrate through a sleeve reserved at the top end of the steel pipe, the integral dome formwork structure is hung, a closed valve of the inflatable low-mould is released, gas in the air-filled low-mould is released, the threaded sleeve is slowly screwed downwards by pulling out a bolt of the threaded sleeve on the steel pipe, meanwhile, the first suspension rod and the third suspension rod are detached from the hinging of the dome supporting structure, the dome structure is slowly contracted, the expansion area is reduced, after the size reaches a proper size, the integral dome formwork structure is completely separated from the concrete dome, the sling is immediately and slowly lowered, the integral dome formwork structure is vertically and slowly lowered down along the position of the sleeve, finally falls onto the ground or a platform below the dome, and finally the air-filled bottom mould and the dome structure are detached and are properly stored to the designated position after cleaning.
2. The method of formwork erection for a concrete dome according to claim 1, wherein in the step S3, when the sleeve ring is in contact with the limit clip by screwing the threaded sleeve of the steel pipe, the first suspension rod is in a horizontal state and forms an angle of 90 degrees with the steel pipe.
3. The method of formwork construction for a concrete dome as claimed in claim 1, wherein in step S2, the screw sleeve end is hinged with a pulley.
4. The method of constructing a concrete dome formwork of claim 1, wherein in the step S5, a sleeve having a length greater than the thickness of the concrete in the dome and an inner diameter greater than a slings is provided at the top end of the steel pipe, and the slings are passed through the sleeve to remove the whole dome formwork.
5. The method for constructing a concrete dome formwork according to claim 1, wherein an anti-falling elastic ring clamp is arranged between the first inner inclined rod and the first suspension rod.
6. The concrete dome formwork construction method of claim 1, wherein a plurality of pin holes are formed in the threaded sleeve at intervals, bolts are arranged on the threaded sleeve, and the bolts are inserted into the pin holes.
7. The method for constructing a concrete dome formwork of claim 1, wherein the steel pipe is hollow in the interior for a sling to pass through.
8. The method for constructing a concrete dome formwork according to claim 1, wherein the inflatable bottom mold is a scratch-resistant tensile high-density rubber product.
9. The method of formwork erection for a concrete dome of claim 1, wherein the upper end of the first inner diagonal rod is hinged at a distance of 1/4 of the length from the upper end of the second inner diagonal rod, the lower end of the second suspension rod is hinged at a distance of 1/4 of the length from the upper end of the first suspension rod, the lower end of the second inner diagonal rod is hinged at the upper end of the third suspension rod, the upper end of the pull rod is hinged at a distance of 1/8 of the length from the lower end of the first suspension rod, and the lower end of the first suspension rod is hinged at a distance of 1/4 of the length from the upper end of the second suspension rod.

Description

Concrete dome formwork construction method Technical Field The invention relates to the technical field of dome formwork, in particular to a concrete dome formwork construction method. Background In the construction of a concrete dome structure, a formwork support system is always a link with great construction difficulty. At present, the concrete dome template supporting construction method generally adopts a erecting supporting mode of a full scaffold, and the mode has a plurality of defects, and the defects are as follows: 1. the construction mode needs to set up a full scaffold, is complex in installation and construction, needs to take a long time, affects construction efficiency, causes the problems of high labor cost and long construction period while causing material loss, and consumes great labor and material resource cost; 2. after the template supporting system is finished, each wood product needs to be processed and fixed, so that materials such as a wood template and the like cannot be recycled, the material consumption is extremely high, and in the process of paving the template, high-altitude operation is needed to finish construction, so that the construction difficulty is increased, and meanwhile, great potential safety hazards exist, and the personal safety of operators cannot be guaranteed; 3. Because the dome template supporting system needs to be erected with a full scaffold, and the template is manufactured and safely on site, the quality of the erected frame body and the arc wooden dome processed on site is difficult to ensure, the installation precision is low, and the problem of extremely large quality is left for the installation, replacement and maintenance of the surface materials of the dome and internal equipment in the later stage; 4. After the construction of the reinforced steel bars and the concrete of the concrete dome is completed, the support system is dismantled, huge manpower and material resources are consumed, long operation time is required, the cost of the artificial materials is increased, the construction period is prolonged, and the like, and particularly, the problem of great potential safety hazard is caused by high-altitude operation; 5. The steel frame cable supporting structure similar to the steel frame cable supporting structure has the problems of large construction difficulty in erection and dismantling, difficult guarantee of precision quality control, high material consumption, large labor cost demand, long construction operation period, large construction potential safety hazard of operators and the like. Disclosure of Invention The invention provides a concrete dome formwork construction method, which aims at the problems and limitations of the existing full-hall scaffold wood formwork support structure and the existing steel frame cable support structure. The template supporting system of the method can be used for processing on the ground or an operation platform, hoisting or jacking and the like, so that potential safety hazards of overhead operation are avoided, and material consumption and quality caused by on-site processing are uncontrollable. Meanwhile, a great amount of manpower resource consumption and material lease of the full scaffold support are avoided, and the cost is greatly saved. The structure provided by the invention is extremely simple and reliable, the erection requirement is low, the construction speed is high, the dismantling operation is simple and convenient, the operation efficiency can be greatly improved, the construction progress is advanced, and the project fund cost and the time cost are saved. The invention provides a concrete dome formwork construction method which adopts the following technical scheme: a concrete dome formwork construction method comprises the following steps: the construction method comprises the steps of S1, preparing construction, wherein the construction method comprises the steps of comprising a steel pipe, a first suspension rod, a second suspension rod, a third suspension rod, a first inner inclined rod, a second inner inclined rod and a pull rod, wherein earplates with holes are respectively arranged at two ends of the steel pipe, lantern rings are arranged on the plates with Kong Er, limiting clamps are arranged on the steel pipe, and threaded sleeves are arranged on the limiting clamps; S2, preliminary assembly, wherein one end of a first suspension rod is hinged on a belt Kong Er plate at the upper end of a steel pipe, the other end of the first suspension rod is hinged on a second outer suspension rod, one end of a first inner inclined rod is hinged on a belt Kong Er plate at the lower end of the steel pipe, the other end of the first inner inclined rod is hinged on the first inner inclined rod, the other end of the second inner inclined rod is hinged with the second suspension rod, one end of a pull rod is hinged on the first suspension rod, the other end of the pull rod is hinged wit