CN111321673A - Bridge cylindrical pier template, assembling method and construction method of bridge cylindrical pier - Google Patents
Bridge cylindrical pier template, assembling method and construction method of bridge cylindrical pier Download PDFInfo
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- CN111321673A CN111321673A CN202010206373.XA CN202010206373A CN111321673A CN 111321673 A CN111321673 A CN 111321673A CN 202010206373 A CN202010206373 A CN 202010206373A CN 111321673 A CN111321673 A CN 111321673A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Abstract
The invention discloses a bridge cylindrical pier template and an assembling method, wherein the bridge cylindrical pier template is assembled by two half templates which are the same, wherein any half template comprises a standard section and adjusting sections with different lengths, the standard section and the adjusting sections respectively comprise an outer template, a vertical rib plate and a horizontal rib plate, the end surface and the horizontal rib plate of the outer template are both semicircular, the horizontal templates are axially arranged at intervals outside the outer template, and the vertical rib plates are circumferentially arranged at intervals; the edge ribs of the vertical rib plate and the horizontal rib plate are provided with arc holes. The template consists of a standard section template and an adjusting section template, can be adjusted to the height required by engineering design at will, and has the advantages of flexible assembly, convenient operation, safe construction, high efficiency of construction, compact concrete and smooth appearance. The template and the method are used, so that the working efficiency is effectively improved, and the cost is saved.
Description
Technical Field
The invention belongs to the field of bridge pier stud construction, and particularly relates to a bridge cylindrical pier template, an assembling method and a construction method of a bridge cylindrical pier.
Background
The cylindrical pier of the bridge is generally installed in an insertion mode by adopting a wood template, and the wood template has the characteristics of large deformation, low rigidity, difficulty in height combination, easiness in damage and the like. The poured concrete has the characteristics of poor appearance quality, difficulty in size control, less turnover frequency of the template and the like.
The application date is 2019 4 month 28 days, application number 201910348315.8's patent discloses a fan-shaped three-opening rotary-closing type cylinder pier template of installing and removing fast, constitute by three 120 steel form, adopt to insert between the template and rotate the pivot and connect, directly use the axis of rotation to close or peel off the template soon as the axis of rotation when closing the form removal, this template is although it is very convenient to dismantle, but the application of the good only can be applicable to same kind of height of preparation, need make multiple template to the cylinder mound of co-altitude not, waste material, man-hour, and it is inconvenient to assemble.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the bridge cylindrical pier template, the assembling method and the construction method of the bridge cylindrical pier are provided, and the problems that the bridge pier template is inconvenient to assemble, easy to damage and poor in compatibility in the prior art are solved.
The invention adopts the following technical scheme for solving the technical problems:
a bridge cylindrical pier template is formed by assembling two half templates which are the same, wherein any half template comprises a standard section and adjusting sections with different lengths, the standard section and the adjusting sections respectively comprise an outer template, vertical rib plates and horizontal rib plates, the end surfaces and the horizontal rib plates of the outer template are semicircular, the horizontal templates are axially arranged at intervals on the outer side of the outer template, and the vertical rib plates are circumferentially arranged at intervals; the edge ribs of the vertical rib plate and the horizontal rib plate are provided with arc holes.
When assembling, the lower part is provided with a standard section, the upper part is provided with an adjusting section, sealing strips are arranged between the two half templates and between the standard section and the adjusting section, and the joint gap of the inner wall is smoothed by putty.
The vertical rib plates are arranged between the two adjacent horizontal rib plates.
The manufacturing method of the bridge cylindrical pier template comprises the following steps: firstly, horizontal rib plates are longitudinally welded at intervals on the outer side of the outer template, secondly, vertical rib plates are transversely welded at intervals between the outer side of the outer template and two adjacent horizontal rib plates, and finally, arc holes are formed in the horizontal rib plates and the edge ribs of the vertical rib plates.
A method for assembling a cylindrical pier template of a bridge comprises the following steps:
and 5, polishing the inner wall of the whole template, cleaning, coating special template paint, and completing the assembly of the cylindrical pier template.
A construction method of a bridge cylindrical pier comprises the following steps:
a, pile head chiseling, wherein after the pile foundation is detected to be qualified, chiseling is carried out according to the height of the pile top measured and positioned;
b, measuring and paying off, namely paying off the midpoint of the pier body by using a total station and marking, measuring the elevation of the pile top by using a level meter, and marking on the exposed concrete as a reference of a lower process;
c, installing a reinforcement cage, namely firstly correcting pier column main reinforcements pre-embedded in a bearing platform or a pile top, fixing the pier column main reinforcements by using erection reinforcements according to the intervals of the pier column main reinforcements and binding stirrups according to design drawings, secondly welding the pier column main reinforcements and pile foundation main reinforcements after hoisting and positioning the prefabricated reinforcement cage, and then symmetrically arranging four wind cables around the reinforcement cage and fixing the four wind cables on a ground anchor; finally, cement mortar cushion blocks are bound on the reinforcement cage at axial intervals, and the upper opening of the template is fixed by a short reinforcement head;
d, installing the template, namely leveling the bottom of the template by using high-grade mortar, arranging temporary supports around the template to adjust the verticality of the template, vertically hoisting the template in place, and fixing the template by using a cable wind rope and a ground anchor;
e, pouring concrete, installing guide cylinders, pouring the concrete layer by layer, pouring each layer to a preset thickness, vibrating by using a vibrating rod to compact, and pouring the next layer by using the same method until the pouring is finished;
f, maintaining, namely maintaining the poured bridge cylindrical pier until the curing standard is reached;
g, removing the templates, and when the strength of the concrete reaches a preset threshold value, sequentially removing the templates to avoid the templates colliding with the pier body;
and h, repeating the steps a to g, and completing the construction of all the sections of the pier columns from bottom to top in sequence.
The middle of the pile head chiseled in the step a is higher than the periphery, and the surface is flat.
C, adopting single-side lap welding or double-side lap welding for the pile foundation main reinforcement and the pier stud main reinforcement in the step c; binding the mortar cushion blocks in a quincunx shape; the four wind cables are fixed on the ground anchor through turn buckle bolts.
And e, in the step e, the small distance from the casting surface of the guide cylinder is not more than 2m, and the layered casting thickness is less than 35 cm.
And g, when the concrete strength is not lower than 2.5Mpa in the step g, dismantling the template.
Compared with the prior art, the invention has the following beneficial effects:
1. the template consists of a standard section template and an adjusting section template, can be adjusted to the height required by engineering design at will, and has the advantages of flexible assembly, convenient operation, safe construction, high efficiency of construction, compact concrete and smooth appearance.
2. After the template is manufactured, the method can be applied to pouring of various cylindrical piers, only the standard section and the adjusting sections with different specifications need to be assembled, the template does not need to be manufactured again, and the method has good compatibility.
3. By using the template and the method, the working efficiency is effectively improved, and the cost is saved.
Drawings
FIG. 1 is a plan view of a standard section of a cylindrical pier template of a bridge.
FIG. 2 is an elevation view of a standard section of the cylindrical pier template of the bridge of the invention.
Fig. 3 is a plan view of the assembled bridge column pier template of the invention.
Fig. 4 is an elevation view of the assembled bridge column pier template of the invention.
FIG. 5 is a side view of the assembled half of the cylindrical pier template of the bridge of the present invention.
Fig. 6 is an elevation view of the assembled bridge column pier template of the invention.
FIG. 7 is a flow chart of the construction process of the bridge cylindrical pier.
Wherein, the labels in the figure are: 1-standard section template; 1-1 outer template; 1-2-vertical rib plates; 1-3-horizontal rib plate; 2-1 m of adjusting section template; adjusting section template of 3-0.5 m; 4-a steel wire rope; 5-a guy rope; 6-ground anchor.
Detailed Description
The structure and operation of the present invention will be further described with reference to the accompanying drawings.
A bridge cylindrical pier template is formed by assembling two half templates which are the same, wherein any half template comprises a standard section and adjusting sections with different lengths, the standard section and the adjusting sections respectively comprise an outer template, vertical rib plates and horizontal rib plates, the end surfaces and the horizontal rib plates of the outer template are semicircular, the horizontal templates are axially arranged at intervals on the outer side of the outer template, and the vertical rib plates are circumferentially arranged at intervals; the edge ribs of the vertical rib plate and the horizontal rib plate are provided with arc holes.
In the first embodiment, a cylindrical pier with a pier column height of 7.5m and a diameter of 1.8 m is taken as an example to illustrate the scheme, as shown in fig. 1 to 6:
a cylindrical bridge pier template is characterized in that the template is manufactured into a standard section 1 with the length of 1.5m, an adjusting section 2 with the length of 1m and an adjusting section 3 with the length of 0.5m, the template is made of steel plates, and the standard section and the adjusting section are composed of an outer template 1-1, vertical rib plates 1-2 and horizontal rib plates 1-3.
The outer template 1-1 is 6mm thick, 2485mm long, 2000mm high and has semi-circular end surface.
The vertical rib plate 1-2 is 6mm thick, 1975mm long and 100mm high, wherein the left and right vertical side ribs are 12mm thick, 2000mm long and 100mm high, and arc holes with the diameter of 22mm are arranged on the left and right vertical side ribs.
The horizontal rib plates are 1-3 mm thick and 10mm long, 2485mm long and 100mm high, and are arc-shaped, wherein the upper and lower horizontal edge ribs are 12mm thick, 2485mm long and 100mm high, and are arc-shaped, and the edge ribs are provided with arc holes with the diameter of 22 mm.
The first manufacturing method of the bridge cylindrical pier template comprises the following steps:
firstly, horizontal rib plates are longitudinally welded at intervals on the outer side of the outer template, secondly, vertical rib plates are transversely welded at intervals between the outer side of the outer template and two adjacent horizontal rib plates, and finally, arc holes are formed in the horizontal rib plates and the edge ribs of the vertical rib plates.
The second manufacturing method of the bridge cylindrical pier template comprises the following steps:
when in manufacturing, firstly, 8 vertical rib plates 1-2 are welded at intervals at the outer side of the outer template 1-1, and the distance is 403 mm; and welding 5 horizontal rib plates 1-3 at intervals at the outer side of the outer template 1-1 at intervals, wherein the interval is 375 mm. The same method is used for manufacturing the adjusting section template with the length of 0.5m and the length of 1 m.
A method for assembling a cylindrical pier template of a bridge comprises the following steps:
and 5, polishing the inner wall of the whole template, cleaning, coating special template paint, and completing the assembly of the cylindrical pier template.
In a second embodiment of the present invention, a second,
when assembling, the standard section is arranged below, the adjusting section is arranged above, 4 sections of 1.5m standard section 1, 1m long adjusting section 2 and 0.5m adjusting section 3 are longitudinally assembled into a half formwork by using bolts with the diameter of 20mm to form the other half formwork, the height of the formwork meets the length requirement of a construction section, sponge sealing strips are clamped between the two half formworks and between the standard section and the adjusting section, and the joint gap of the inner wall is leveled by using putty.
And hoisting a half of the template (with the inner side facing downwards) by using a crane, placing the half of the template on the other half of the template, aligning bolt holes, and then connecting and fixing the two half of the template by using bolts 4 to combine the two half of the template into a whole.
When the angle grinder is used for the first time, the inner wall of the template is polished to be smooth, then the template is wiped clean by cotton yarn, and then special template paint is coated to ensure that the concrete is flat, smooth and clean in appearance. After the coating is used, the release agent is coated only after being cleaned.
A construction method of a bridge cylindrical pier comprises the following steps:
a, pile head chiseling, wherein after the pile foundation is detected to be qualified, chiseling is carried out according to the height of the pile top measured and positioned;
b, measuring and paying off, namely paying off the midpoint of the pier body by using a total station and marking, measuring the elevation of the pile top by using a level meter, and marking on the exposed concrete as a reference of a lower process;
c, installing a reinforcement cage, namely firstly correcting pier column main reinforcements pre-embedded in a bearing platform or a pile top, fixing the pier column main reinforcements by using erection reinforcements according to the intervals of the pier column main reinforcements and binding stirrups according to design drawings, secondly welding the pier column main reinforcements and pile foundation main reinforcements after hoisting and positioning the prefabricated reinforcement cage, and then symmetrically arranging four wind cables around the reinforcement cage and fixing the four wind cables on a ground anchor; finally, cement mortar cushion blocks are bound on the reinforcement cage at axial intervals, and the upper opening of the template is fixed by a short reinforcement head;
d, installing the template, namely leveling the bottom of the template by using high-grade mortar, arranging temporary supports around the template to adjust the verticality of the template, vertically hoisting the template in place, and fixing the template by using a cable wind rope and a ground anchor;
e, pouring concrete, installing guide cylinders, pouring the concrete layer by layer, pouring each layer to a preset thickness, vibrating by using a vibrating rod to compact, and pouring the next layer by using the same method until the pouring is finished;
f, maintaining, namely maintaining the poured bridge cylindrical pier until the curing standard is reached;
g, removing the templates, and when the strength of the concrete reaches a preset threshold value, sequentially removing the templates to avoid the templates colliding with the pier body;
and h, repeating the steps a to g, and completing the construction of all the sections of the pier columns from bottom to top in sequence.
In the third specific embodiment, the method is described by taking the example that two cylindrical piers with the height of 7.5 meters and the diameter of 1.8 meters are constructed simultaneously, and the process flow is shown in fig. 7:
a construction method of a cylindrical pier template of a bridge is characterized in that a pier column is 7.5 meters in height and 1.8 meters in diameter. The length of the template is 7.5m, the template is divided into 6 sections, 4 sections are 1.5m each, 1 section is 1m each, and 1 section is 0.5m each. The construction method comprises the steps of a, pile head roughening, b, measuring and paying off, c, installing a reinforcement cage, d, template installation, e, concrete pouring, f, maintenance, g, template removal and the like.
A, pile head chiseling, wherein after a pile foundation is detected to be qualified, chiseling is carried out according to the height of a pile top measured and positioned, pile head laitance can be chiseled to a designed height position by adopting manual chiseling or an air compressor, all chiseled concrete is fresh and compact, the middle of the chiseled pile head is slightly higher, the large surface is flat, and cleaning and accumulated water removal are convenient;
and b, measuring and paying off, namely paying off the midpoint of the pier body by using a total station and marking, measuring the elevation of the pile top by using a level meter, and marking on the exposed concrete as a reference of a lower process.
And c, installing a reinforcement cage, correcting pier body main reinforcements pre-embedded in the bearing platform (or the pile top) before installing the reinforcement cage, fixing the pier body main reinforcements by using erection reinforcements according to the intervals of the pier body main reinforcements, binding stirrups according to a design drawing, and paying attention to the direction of a binding screw head towards the inner side of the pier column during binding. When the steel reinforcement cage is installed, the steel reinforcement cage is accurately positioned by the manual auxiliary crane, the pier stud main reinforcement and the pile foundation main reinforcement are firmly welded, four wind cables are symmetrically arranged around the steel reinforcement cage to ensure the perpendicularity of the steel reinforcement cage and avoid the influence of wind power, and the steel reinforcement cage is fixed on a ground anchor through the turn buckle. The pile foundation main rib and the pier stud main rib are connected by adopting single-face lap welding or double-face lap welding. The protective layer thickness is guaranteed by binding the cement mortar cushion blocks on the steel reinforcement cage, the mortar cushion blocks are in quincunx binding, one layer is arranged at intervals, the upper opening of the template is fixed by short steel bar heads, and the steel reinforcement cage is prevented from being deviated.
D, installing the template, leveling the bottom of the template by using high-grade mortar before installing the template, adjusting the verticality of the template by arranging temporary supports around the template, ensuring the support to be fixed firmly and reliably, vertically hoisting the template in place by using a crane, and fixing the template by using a guy rope 5 and a ground anchor 6.
And e, pouring concrete, installing a guide cylinder to pour the concrete, controlling the distance between the lower end of the guide cylinder and a pouring surface to be not more than 2 meters, controlling the layered pouring thickness to be about 30cm, vibrating by using a vibrating rod to compact, pouring the next layer by using the same method, and alternately pouring every two meters between the double columns during pouring until the pouring is finished.
And f, curing, namely covering the surface of the concrete by using geotextile or gunny bags, and performing watering curing to ensure that the concrete is in a wet state. The curing time is not less than 7 days, and if the temperature is higher, the curing time is prolonged.
And g, dismantling the template, when the strength of the concrete is not lower than 2.5Mpa, using a crane to cooperate with manual work to dismantle, paying attention to the sequence during dismantling, and not pulling the concrete to damage the structure. When the form is removed, the templates around the pier body are tensioned by the pull ropes, and must be slowly lifted by a manual-fit crane, so that the templates are prevented from colliding with the pier body. And the templates need to be cleaned and orderly and horizontally stacked when being detached.
And h, repeating the steps a to g, and finishing the construction of all the sections of the pier stud from bottom to top in sequence, wherein the difference is that in the step a, the pile head chiseling is lower section pier stud chiseling or connecting beam chiseling.
All the mentioned dimensions and specification data in the scheme are only used for explaining the scheme, and a person skilled in the art can adaptively adjust all the dimensions according to the field requirement to meet the design requirement.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. The utility model provides a bridge cylinder pier template which characterized in that: the formwork comprises two half same formworks, wherein each half formwork comprises a standard section and an adjusting section with different lengths, each standard section and each adjusting section comprises an outer formwork, a vertical rib plate and a horizontal rib plate, the end surface and the horizontal rib plate of each outer formwork are semicircular, the horizontal formworks are axially arranged at intervals on the outer side of each outer formwork, and the vertical rib plates are circumferentially arranged at intervals; the edge ribs of the vertical rib plate and the horizontal rib plate are provided with arc holes.
2. The cylindrical pier template of bridge according to claim 1, wherein: when assembling, the lower part is provided with a standard section, the upper part is provided with an adjusting section, sealing strips are arranged between the two half templates and between the standard section and the adjusting section, and the joint gap of the inner wall is smoothed by putty.
3. The cylindrical pier template of bridge according to claim 1, wherein: the vertical rib plates are arranged between the two adjacent horizontal rib plates.
4. The cylindrical pier template of bridge according to claim 1, wherein: the manufacturing method of the bridge cylindrical pier template comprises the following steps: firstly, horizontal rib plates are longitudinally welded at intervals on the outer side of the outer template, secondly, vertical rib plates are transversely welded at intervals between the outer side of the outer template and two adjacent horizontal rib plates, and finally, arc holes are formed in the horizontal rib plates and the edge ribs of the vertical rib plates.
5. An assembling method of the bridge cylindrical pier template of any one of claims 1 to 4, which is characterized in that: the method comprises the following steps:
step 1, pre-manufacturing a plurality of sections of standard section templates and adjusting section templates to ensure that the height of the templates meets the length requirement of a construction section;
step 2, connecting a plurality of sections of standard section templates by bolts in sequence, connecting one end of the spliced standard section template with an adjusting section template, clamping a sealing strip between the standard section and the adjusting section, assembling to form a half template, and troweling a joint gap of the inner wall by using putty;
step 3, assembling the other half of the template according to the method in the step 2;
step 4, hoisting a half of the template by using a crane, putting the inner side of the other half of the template downwards, aligning bolt holes, connecting and fixing the two half of the template by using bolts, combining the two half of the template into an integral template, clamping a sealing strip between the two half of the template, and troweling a joint gap of the inner wall by using putty;
and 5, polishing the inner wall of the whole template, cleaning, coating special template paint, and completing the assembly of the cylindrical pier template.
6. A construction method of a bridge cylindrical pier is characterized by comprising the following steps: the method comprises the following steps:
a, pile head chiseling, wherein after the pile foundation is detected to be qualified, chiseling is carried out according to the height of the pile top measured and positioned;
b, measuring and paying off, namely paying off the midpoint of the pier body by using a total station and marking, measuring the elevation of the pile top by using a level meter, and marking on the exposed concrete as a reference of a lower process;
c, installing a reinforcement cage, namely firstly correcting pier column main reinforcements pre-embedded in a bearing platform or a pile top, fixing the pier column main reinforcements by using erection reinforcements according to the intervals of the pier column main reinforcements and binding stirrups according to design drawings, secondly welding the pier column main reinforcements and pile foundation main reinforcements after hoisting and positioning the prefabricated reinforcement cage, and then symmetrically arranging four wind cables around the reinforcement cage and fixing the four wind cables on a ground anchor; finally, cement mortar cushion blocks are bound on the reinforcement cage at axial intervals, and the upper opening of the template is fixed by a short reinforcement head;
d, installing the template, namely leveling the bottom of the template by using high-grade mortar, arranging temporary supports around the template to adjust the verticality of the template, vertically hoisting the template in place, and fixing the template by using a cable wind rope and a ground anchor;
e, pouring concrete, installing guide cylinders, pouring the concrete layer by layer, pouring each layer to a preset thickness, vibrating by using a vibrating rod to compact, and pouring the next layer by using the same method until the pouring is finished;
f, maintaining, namely maintaining the poured bridge cylindrical pier until the curing standard is reached;
g, removing the templates, and when the strength of the concrete reaches a preset threshold value, sequentially removing the templates to avoid the templates colliding with the pier body;
and h, repeating the steps a to g, and completing the construction of all the sections of the pier columns from bottom to top in sequence.
7. The cylindrical pier template of bridge according to claim 6, wherein: the middle of the pile head chiseled in the step a is higher than the periphery, and the surface is flat.
8. The cylindrical pier template of bridge according to claim 6, wherein: c, adopting single-side lap welding or double-side lap welding for the pile foundation main reinforcement and the pier stud main reinforcement in the step c; binding the mortar cushion blocks in a quincunx shape; the four wind cables are fixed on the ground anchor through turn buckle bolts.
9. The cylindrical pier template of bridge according to claim 6, wherein: and e, in the step e, the small distance from the casting surface of the guide cylinder is not more than 2m, and the layered casting thickness is less than 35 cm.
10. The cylindrical pier template of bridge according to claim 6, wherein: and g, when the concrete strength is not lower than 2.5Mpa in the step g, dismantling the template.
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| CN202010206373.XA CN111321673A (en) | 2020-03-23 | 2020-03-23 | Bridge cylindrical pier template, assembling method and construction method of bridge cylindrical pier |
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| CN202010206373.XA CN111321673A (en) | 2020-03-23 | 2020-03-23 | Bridge cylindrical pier template, assembling method and construction method of bridge cylindrical pier |
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| CN208950303U (en) * | 2018-10-17 | 2019-06-07 | 中铁五局集团建筑工程有限责任公司 | A kind of assembled beam-column node template |
| CN110512524A (en) * | 2019-08-16 | 2019-11-29 | 中交一公局第五工程有限公司 | A kind of bridge pier column safe construction method |
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| JPH1060818A (en) * | 1996-08-13 | 1998-03-03 | Nippon Hume Pipe Co Ltd | Structure of form |
| CN203878988U (en) * | 2014-05-22 | 2014-10-15 | 苏州第五建筑集团有限公司 | Cylindrical steel moulding plate |
| CN104846744A (en) * | 2015-03-19 | 2015-08-19 | 南通大学 | Construction method for pouring and forming urban viaduct curve type pier stud in one-off mode |
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| CN110512524A (en) * | 2019-08-16 | 2019-11-29 | 中交一公局第五工程有限公司 | A kind of bridge pier column safe construction method |
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Application publication date: 20200623 |
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| RJ01 | Rejection of invention patent application after publication |