CN112554233A - Truss type formwork and method for efficiently installing and transferring annular opening of oversized wall - Google Patents
Truss type formwork and method for efficiently installing and transferring annular opening of oversized wall Download PDFInfo
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- CN112554233A CN112554233A CN202011453633.XA CN202011453633A CN112554233A CN 112554233 A CN112554233 A CN 112554233A CN 202011453633 A CN202011453633 A CN 202011453633A CN 112554233 A CN112554233 A CN 112554233A
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
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Abstract
The invention discloses a truss type formwork and a method for efficiently installing and transferring an oversized wall body annular opening, and belongs to the technical field of building construction. The main joist adopts steel pipe welded's truss system, connects through steel pipe fastener between the main joist, carries out the back-lifting through the steel-pipe frame again, and the support system is direct to be backed up secondary stupefied more firm relatively traditional steel-pipe frame, has avoided bulging, the scheduling problem of exploding.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a truss type formwork and a method for efficiently installing and transferring an annular opening of an oversized wall.
Background
In the main structure engineering of the subway station, the side walls at two ends of the station can reserve the entrances and exits of the circular shield tunneling machine for the shield tunneling to start or receive. In the construction process of side walls at two ends of a station, the reserved circular shield access and exit ring beam is difficult to support, the formwork supporting efficiency is slow, the quality of the formwork supporting is difficult to guarantee, and the phenomena of formwork expansion and formwork explosion can often occur.
Therefore, the truss type formwork and the method for efficiently installing and circulating the annular opening of the oversized wall are provided, and compared with the traditional method for directly topping and sub-corrugating the steel pipe frame, the truss type formwork is more stable, and the problems of formwork expansion, formwork explosion and the like are avoided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a truss type formwork and a method for efficiently installing and circulating an oversized wall annular opening, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a truss-like formwork that super large wall body annular opening high-efficient installation and can have enough to meet need, includes main joist, support frame, inferior stupefied, main stupefied and template, the main joist sets up four layers along wall thickness direction altogether, and equidistant the arranging of four layers of main joist, main joist pass through the steel pipe fastener along wall thickness direction and connect, and the interval of connecting the steel pipe is 600mm, utilizes phi 48 steel pipe to set up the support frame and carry out the back-up to the main joist between the main joist, and the support frame sets up the three-layer along wall thickness direction altogether, the main stupefied adopts the fastener to be connected with the main joist, the main stupefied both ends that set up at the support frame, inferior stupefied setting is between main joist and template.
Further optimizing the technical scheme, the main keel is formed by connecting phi 48 steel plate welded fan-shaped trusses, four fan-shaped trusses with the same size are adopted in the same plane and are connected through M14 bolts to form the circular main keel.
Further optimizing the technical scheme, the main ridges are phi 48 double steel pipes, the phi 48 double steel pipes are used for welding the main keels into fan-shaped trusses, and then the phi 48 double steel pipes are used for carrying out back jacking among the fan-shaped trusses.
Further optimizing this technical scheme, inferior arris adopts 100x100mm flitch, the interval between inferior arris is 250 mm.
Further optimize this technical scheme, the template adopts 15 mm's cladding plywood, the monolithic width of main joist is 1100 mm.
A method for installing a truss type formwork with an ultra-large wall body annular opening, which is capable of being efficiently installed and circulated, is used for installing the formwork with the shield access ring beam, and comprises the following specific steps:
s1, blanking a main keel steel pipe;
s2, frame welding of the main keel fan-shaped truss is carried out;
s3, performing gap welding of the main keel fan-shaped truss;
s4, connecting the fan-shaped trusses on the same plane into an arc shape on the ground;
s5, hoisting the four connected arc main keels to a formwork installation operation surface one by one;
s6, connecting the four main keels into a whole along the thickness direction of the wall by steel pipe fasteners;
s7, installing the template and the secondary edge, wherein the shield opening adopts a prefabricated keel as a main edge of the shield formwork;
s8, setting a back-jacking main keel for the steel pipe frame tower;
s9, bundling a ring beam steel rib plate of the shield entrance and exit;
and S10, pouring concrete.
Further optimizing the technical scheme, in the step S1, the shield ring keel is processed according to the strict blanking of the drawing size of the scheme.
Further optimizing the technical scheme, in the S2 process, the welding quality of the main keel meets the standard requirements, full welding is adopted among the steel pipes, and the full welding seams are ensured.
Further optimizing the technical scheme, in the step S4, the arc section of the fan-shaped keel cannot be broken in the bending process, the arc length and the radius of the fan-shaped keel are processed strictly according to the scheme, and the error range is controlled to be 8 mm.
Further optimize this technical scheme, in S5, 4 pieces of fossil fragments of coplanar assemble and guarantee that the roughness of main joist is not more than 10mm after accomplishing, and after fossil fragments processing was accomplished, try to assemble on ground, in time discover the problem, and carry out the rectification and reform.
Compared with the prior art, the invention provides a truss type formwork and a method for efficiently installing and transferring an oversized wall annular opening, and the truss type formwork and the method have the following beneficial effects:
1. this truss-like formwork and method that super large wall body annular opening high-efficient installation and can have enough to meet need, main joist adopt steel pipe welded's truss system, connect through the steel pipe fastener between the main joist, carry out the back-lifting through the steel-pipe frame again, and the support system is direct back-lifting inferior stupefied more firm than traditional steel-pipe frame, has avoided bulging, the scheduling problem of exploding the mould.
2. According to the truss type formwork and the method for efficiently installing and transferring the oversized wall body annular opening, the main keel is formed by connecting the fan-shaped trusses, the fan-shaped trusses on the same plane are connected through the M14 bolts, and the fan-shaped trusses along the wall thickness direction are connected through the steel pipe fasteners, so that the main keel can be repeatedly used in the equal-diameter shield access and exit ring beam formwork after being detached.
3. According to the truss type formwork and the method for efficiently installing and transferring the annular opening of the oversized wall, the main keel can be hoisted to the working face for installation after being assembled on the ground in advance, and the efficiency of the formwork for supporting the ring beam at the inlet and the outlet of the shield is improved.
4. According to the truss type formwork and the method for efficiently installing and transferring the annular opening of the oversized wall, the main keel can be machined and manufactured in advance in a factory, the manufacturing precision of the keel is improved through factory machining, and the quality of the formwork for the shield access ring beam is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a truss-type formwork system for efficiently installing and circulating an oversized wall annular opening, which is provided by the invention;
FIG. 2 is a schematic diagram of the connection of main keels of a truss-type formwork with an annular opening of an oversized wall body, which is efficiently installed and can be rotated, in blocks along the wall thickness direction;
FIG. 3 is a connection sketch of a single main keel and a keel of a truss-type formwork for efficiently mounting and transferring an oversized wall annular opening, provided by the invention;
FIG. 4 is a schematic flow chart of a method for installing a truss-type formwork in a revolving manner for efficiently installing an oversized wall annular opening, according to the invention;
fig. 5 is a schematic view of the connection of the fan-shaped truss of the truss formwork system which is efficiently installed at the annular opening of the oversized wall body and can be rotated.
In the figure: 1. a main keel; 2. a support frame; 3. secondary corrugation; 4. main corrugation; 5. and (5) template.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
please refer to fig. 1-3, a truss-like formwork that super large wall body annular opening is installed high-efficiently and can have enough to meet need, including main joist 1, support frame 2, inferior stupefied 3, main stupefied 4 and template 5, main joist 1 sets up four layers altogether along wall thickness direction, four layers of main joist 1 equidistant arrangement, main joist 1 passes through steel pipe fastener along the wall thickness direction and connects, the interval of connecting the steel pipe is 600mm, utilize phi 48 steel pipe to set up support frame 2 between main joist 1 and carry out the back-up to main joist 1, support frame 2 sets up three layers altogether along the wall thickness direction, main stupefied 4 adopts the fastener to connect with main joist 1, main stupefied 4 sets up the both ends at support frame 2, inferior stupefied 3 sets up between main joist 1 and template 5.
Referring to fig. 5, specifically, the main keel 1 is formed by connecting phi 48 steel plates and welded fan-shaped trusses, and four fan-shaped trusses with the same size are used in the same plane and are connected through M14 bolts to form the circular main keel 1.
Specifically, the main edge 4 is a phi 48 double steel pipe, the main keel 1 is welded into a fan-shaped truss by using the phi 48 double steel pipe, and then the phi 48 double steel pipe is used for jacking between the fan-shaped trusses.
Specifically, the secondary ridges 3 adopt 100x100mm battens, and the distance between the secondary ridges 3 is 250 mm.
Specifically, the template 5 adopts 15mm of faced plywood, and the single width of the main keel 1 is 1100 mm.
Referring to fig. 4, a method for installing a truss-type formwork for efficiently installing and circulating an annular opening of an oversized wall body, which is used for installing the above-mentioned shield access ring beam formwork, includes the following steps:
s1, blanking a steel pipe of the main keel 1;
s2, frame welding of the main keel 1 fan-shaped truss is carried out;
s3, performing gap welding of the main keel 1 fan-shaped truss;
s4, connecting the fan-shaped trusses on the same plane into an arc shape on the ground;
s5, hoisting the four connected arc main keels 1 to a formwork installation operation surface one by one;
s6, connecting the four main keels 1 into a whole along the thickness direction of the wall by steel pipe fasteners;
s7, installing a template 5 and a secondary ridge 3, wherein a shield opening adopts a prefabricated keel as a main ridge 4 of a shield formwork;
s8, setting a back-jacking main keel 1 in the steel pipe frame tower;
s9, bundling a ring beam steel rib plate of the shield entrance and exit;
and S10, pouring concrete.
Specifically, in the step S1, the shield ring keel is machined by strictly blanking according to the dimensions of the scheme drawing.
Specifically, in S2, the welding quality of the main keel 1 meets the standard requirements, full welding is adopted between the steel pipes, and the full welding seam is ensured.
Specifically, in S4, the arc segment of the fan-shaped keel must not be broken during the bending process, the arc length and radius of the fan-shaped keel are strictly processed according to the scheme, and the error range is controlled to be 8 mm.
Specifically, in S5, 4 pieces of fossil fragments of coplanar are assembled and are accomplished and guarantee that main joist 1' S roughness is not more than 10mm, and after the fossil fragments processing was accomplished, try to assemble on ground, in time discover the problem, and carry out the rectification and reform.
Example two:
please refer to fig. 1-3, a truss-like formwork that super large wall body annular opening is installed high-efficiently and can have enough to meet need, including main joist 1, support frame 2, inferior stupefied 3, main stupefied 4 and template 5, main joist 1 sets up four layers altogether along wall thickness direction, four layers of main joist 1 equidistant arrangement, main joist 1 passes through steel pipe fastener along the wall thickness direction and connects, the interval of connecting the steel pipe is 600mm, utilize phi 48 steel pipe to set up support frame 2 between main joist 1 and carry out the back-up to main joist 1, support frame 2 sets up three layers altogether along the wall thickness direction, main stupefied 4 adopts the fastener to connect with main joist 1, main stupefied 4 sets up the both ends at support frame 2, inferior stupefied 3 sets up between main joist 1 and template 5.
Referring to fig. 5, specifically, the main keel 1 is formed by connecting phi 48 steel plates and welded fan-shaped trusses, and four fan-shaped trusses with the same size are used in the same plane and are connected through M14 bolts to form the circular main keel 1.
Specifically, the main edge 4 is a phi 48 double steel pipe, the main keel 1 is welded into a fan-shaped truss by using the phi 48 double steel pipe, and then the phi 48 double steel pipe is used for jacking between the fan-shaped trusses.
Specifically, the secondary ridges 3 adopt 100x100mm battens, and the distance between the secondary ridges 3 is 250 mm.
Specifically, the template 5 adopts 15mm of faced plywood, and the single width of the main keel 1 is 1100 mm.
Referring to fig. 4, a method for installing a truss-type formwork for efficiently installing and circulating an annular opening of an oversized wall body, which is used for installing the above-mentioned shield access ring beam formwork, includes the following steps:
s1, blanking a steel pipe of the main keel 1;
s2, frame welding of the main keel 1 fan-shaped truss is carried out;
s3, performing gap welding of the main keel 1 fan-shaped truss;
s4, connecting the fan-shaped trusses on the same plane into an arc shape on the ground;
s5, hoisting the four connected arc main keels 1 to a formwork installation operation surface one by one;
s6, connecting the four main keels 1 into a whole along the thickness direction of the wall by steel pipe fasteners;
s7, installing a template 5 and a secondary ridge 3, wherein a shield opening adopts a prefabricated keel as a main ridge 4 of a shield formwork;
s8, setting a back-jacking main keel 1 in the steel pipe frame tower;
s9, bundling a ring beam steel rib plate of the shield entrance and exit;
and S10, pouring concrete.
Specifically, in the step S1, the shield ring keel is machined by strictly blanking according to the dimensions of the scheme drawing.
Specifically, in S2, the welding quality of the main keel 1 meets the standard requirements, full welding is adopted between the steel pipes, and the full welding seam is ensured.
Specifically, in S4, the arc segment of the fan-shaped keel must not be broken during the bending process, the arc length and radius of the fan-shaped keel are strictly processed according to the scheme, and the error range is controlled to be 4 mm.
Specifically, in S5, 4 pieces of fossil fragments of coplanar are assembled and are accomplished and guarantee that main joist 1' S roughness is not more than 6mm, and after the fossil fragments processing was accomplished, try to assemble on ground, in time discover the problem, and carry out the rectification and reform.
Example three:
please refer to fig. 1-3, a truss-like formwork that super large wall body annular opening is installed high-efficiently and can have enough to meet need, including main joist 1, support frame 2, inferior stupefied 3, main stupefied 4 and template 5, main joist 1 sets up four layers altogether along wall thickness direction, four layers of main joist 1 equidistant arrangement, main joist 1 passes through steel pipe fastener along the wall thickness direction and connects, the interval of connecting the steel pipe is 600mm, utilize phi 48 steel pipe to set up support frame 2 between main joist 1 and carry out the back-up to main joist 1, support frame 2 sets up three layers altogether along the wall thickness direction, main stupefied 4 adopts the fastener to connect with main joist 1, main stupefied 4 sets up the both ends at support frame 2, inferior stupefied 3 sets up between main joist 1 and template 5.
Referring to fig. 5, specifically, the main keel 1 is formed by connecting phi 48 steel plates and welded fan-shaped trusses, and four fan-shaped trusses with the same size are used in the same plane and are connected through M14 bolts to form the circular main keel 1.
Specifically, the main edge 4 is a phi 48 double steel pipe, the main keel 1 is welded into a fan-shaped truss by using the phi 48 double steel pipe, and then the phi 48 double steel pipe is used for jacking between the fan-shaped trusses.
Specifically, the secondary ridges 3 adopt 100x100mm battens, and the distance between the secondary ridges 3 is 250 mm.
Specifically, the template 5 adopts 15mm of faced plywood, and the single width of the main keel 1 is 1100 mm.
Referring to fig. 4, a method for installing a truss-type formwork for efficiently installing and circulating an annular opening of an oversized wall body, which is used for installing the above-mentioned shield access ring beam formwork, includes the following steps:
s1, blanking a steel pipe of the main keel 1;
s2, frame welding of the main keel 1 fan-shaped truss is carried out;
s3, performing gap welding of the main keel 1 fan-shaped truss;
s4, connecting the fan-shaped trusses on the same plane into an arc shape on the ground;
s5, hoisting the four connected arc main keels 1 to a formwork installation operation surface one by one;
s6, connecting the four main keels 1 into a whole along the thickness direction of the wall by steel pipe fasteners;
s7, installing a template 5 and a secondary ridge 3, wherein a shield opening adopts a prefabricated keel as a main ridge 4 of a shield formwork;
s8, setting a back-jacking main keel 1 in the steel pipe frame tower;
s9, bundling a ring beam steel rib plate of the shield entrance and exit;
and S10, pouring concrete.
Specifically, in the step S1, the shield ring keel is machined by strictly blanking according to the dimensions of the scheme drawing.
Specifically, in S2, the welding quality of the main keel 1 meets the standard requirements, full welding is adopted between the steel pipes, and the full welding seam is ensured.
Specifically, in S4, the arc segment of the fan-shaped keel must not be broken during the bending process, the arc length and radius of the fan-shaped keel are strictly processed according to the scheme, and the error range is controlled at 6 mm.
Specifically, in S5, 4 pieces of fossil fragments of coplanar are assembled and are accomplished and guarantee that main joist 1' S roughness is not more than 8mm, and after the fossil fragments processing was accomplished, try to assemble on ground, in time discover the problem to put forward the transformation.
The beneficial effects of the invention include the following:
1. this truss-like formwork and method that super large wall body annular opening high-efficient installation and can have enough to meet need, main joist 1 adopts steel pipe welded truss system, connects through the steel pipe fastener between main joist 1, carries out the back through the steel-pipe frame again, and the support system is direct to be rested the secondary stupefied more firm than traditional steel-pipe frame, has avoided bulging, has exploded mould scheduling problem.
2. According to the truss type formwork and the method for efficiently installing and transferring the oversized wall body annular opening, the main keel 1 is formed by connecting the fan-shaped trusses, the fan-shaped trusses on the same plane are connected through the M14 bolts, and the fan-shaped trusses along the wall thickness direction are connected through the steel pipe fasteners, so that the main keel 1 can be detached and then can be repeatedly used in the equal-diameter shield inlet and outlet ring beam formwork.
3. According to the truss type formwork and the method for efficiently installing and transferring the annular opening of the oversized wall, the main keel 1 can be hoisted to the working face for installation after being assembled on the ground in advance, and the efficiency of formwork support of the shield access ring beam is improved.
4. According to the truss type formwork and the method for efficiently installing and transferring the annular opening of the oversized wall, the main keel 1 can be machined and manufactured in advance in a factory, the manufacturing precision of the keel is improved through factory machining, and the quality of the formwork for supporting the ring beam at the inlet and the outlet of the shield is guaranteed.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a truss-like formwork that super large wall body annular entrance to a cave high-efficient installation and can have enough to meet need, a serial communication port, including main joist (1), support frame (2), inferior stupefied (3), main stupefied (4) and template (5), main joist (1) sets up four layers along wall thickness direction altogether, and four layers of main joist (1) equidistant arrangement, main joist (1) pass through the steel pipe fastener along wall thickness direction and connect, and the interval of connecting the steel pipe is 600mm, utilizes phi 48 steel pipe to set up support frame (2) and carry out the summit to main joist (1) between main joist (1), and support frame (2) set up the three-layer along wall thickness direction altogether, main stupefied (4) adopt the fastener to be connected with main joist (1), main stupefied (4) set up the both ends at support frame (2), inferior stupefied (3) set up between main joist (1) and template (5).
2. The truss type formwork for the annular opening of the oversized wall body, which is efficient to install and can be rotated, according to the claim 1, is characterized in that the main keel (1) is formed by connecting fan-shaped trusses welded by steel plates with the diameter of phi 48, a total of four fan-shaped trusses with the same size are adopted in the same plane and are connected through M14 bolts to form the circular main keel (1).
3. The truss type formwork with the oversized wall annular hole capable of being efficiently installed and circulated according to claim 1, wherein the main ridges (4) are phi 48 double steel pipes, the phi 48 double steel pipes are used for welding the main keels (1) into fan-shaped trusses, and then the phi 48 double steel pipes are used for jacking among the fan-shaped trusses.
4. The truss-type formwork with the efficient installation and the turnover of the oversized wall ring-shaped opening as claimed in claim 1, wherein the secondary ridges (3) adopt 100x100mm battens, and the distance between the secondary ridges (3) is 250 mm.
5. The truss-type formwork with the efficient installation and turnover of the oversized wall ring-shaped opening is characterized in that 15mm of faced plywood is adopted for the formwork (5), and the single-piece width of the main keel (1) is 1100 mm.
6. A method for installing a truss type formwork with an efficient installation and turnover function for an annular opening of an oversized wall body is used for installing the shield access ring beam formwork of claims 1-5, and is characterized by comprising the following specific steps:
s1, blanking a steel pipe of the main keel (1);
s2, frame welding of the fan-shaped truss of the main keel (1) is carried out;
s3, performing gap welding of the fan-shaped truss of the main keel (1);
s4, connecting the fan-shaped trusses on the same plane into an arc shape on the ground;
s5, hoisting the four connected arc main keels (1) to a formwork installation operation surface one by one;
s6, connecting four main keels (1) into a whole along the thickness direction of the wall by steel pipe fasteners;
s7, installing a template (5) and a secondary edge (3), wherein a shield opening adopts a prefabricated keel as a main edge (4) of a shield formwork;
s8, setting a back-jacking main keel (1) on the steel pipe frame tower;
s9, bundling a ring beam steel rib plate of the shield entrance and exit;
and S10, pouring concrete.
7. The method for installing the truss-type formwork with the ultra-large wall body annular opening capable of being efficiently installed and circulated according to claim 6, wherein in the step S1, the shield ring keel is machined according to the drawing size of a scheme and strictly subjected to blanking machining.
8. The method for installing the truss-type formwork with the ultra-large wall body annular opening capable of being efficiently installed and circulated according to claim 6, wherein in S2, the welding quality of the main keel (1) meets the standard requirement, full welding is adopted among the steel pipes, and full welding seams are ensured.
9. The method for installing the truss-type formwork with the ultra-large wall annular opening installed efficiently and capable of being rotated is characterized in that quality problems such as breakage and the like cannot occur in the bending process of the arc section of the fan-shaped keel in S4, the arc length and the radius of the fan-shaped keel are processed strictly according to a scheme, and the error range is controlled to be 8 mm.
10. The method for installing the truss-type formwork with the ultra-large wall annular opening capable of being installed efficiently and circulated according to claim 6, wherein in S5, after 4 keels on the same plane are assembled, the flatness of the main keel (1) is not larger than 10mm, and after the keels are processed, trial assembly is carried out on the ground, so that problems can be found in time and corrected.
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| CN208396716U (en) * | 2018-05-04 | 2019-01-18 | 北京市政建设集团有限责任公司 | A kind of shield well construction reserved opening arch formwork structure |
| CN208518679U (en) * | 2018-05-04 | 2019-02-19 | 北京市政建设集团有限责任公司 | The supporting construction of template at a kind of shield well construction reserved opening ring beam |
| CN109944609A (en) * | 2019-04-01 | 2019-06-28 | 中铁北京工程局集团有限公司 | It is a kind of irregularly to widen crowned section constructing tunnel device and construction method |
| CN110593136A (en) * | 2019-10-23 | 2019-12-20 | 中铁七局集团有限公司 | Arch ring walking type formwork trolley of deck arch bridge and construction method |
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Application publication date: 20210326 |