阅读说明：本技术 利用短线匹配法预制桥面板的方法 (Method for prefabricating bridge deck by using stub matching method ) 是由 马祖桥 袁助 甘小江 张迪迪 冷大伟 张奇 邓熙浩 程磊科 孙彦明 张立峰 于 2021-06-10 设计创作，主要内容包括：本发明公开了一种利用短线匹配法预制桥面板的方法,其包括以下步骤：1)在待浇段安装桥面板A模板,钢筋入模,浇注桥面板A,终凝后卸落桥面板A两侧的翼板模板,将桥面板A整体移动至匹配段；2)在待浇段安装桥面板B模板,钢筋入模,以桥面板A作为匹配板,浇注桥面板B,终凝后卸落桥面板B两侧的翼板模板,桥面板A整体移动至养生段,桥面板B整体移动至匹配端；3)以桥面板B为匹配板,在待浇段安装桥面板C模板,钢筋入模,浇注桥面板C,并将桥面板A移动至存板区,桥面板B整体移动至养生段,桥面板C整体移动至匹配端；4)以桥面板C为匹配板,浇注下一片桥面板。本发明具有桥面板生产效率高,湿接缝浇注时无需再安装模板等特点。(The invention discloses a method for prefabricating a bridge deck by using a stub matching method, which comprises the following steps: 1) installing a bridge deck A template at the section to be poured, putting steel bars into the template, pouring the bridge deck A, unloading wing plate templates at two sides of the bridge deck A after final setting, and integrally moving the bridge deck A to the matching section; 2) installing a bridge deck B template at the section to be poured, putting steel bars into the template, pouring the bridge deck B by taking the bridge deck A as a matching plate, unloading wing plate templates at two sides of the bridge deck B after final setting, moving the bridge deck A to the curing section integrally, and moving the bridge deck B to the matching end integrally; 3) taking the bridge deck B as a matching plate, installing a template of the bridge deck C on a section to be poured, putting steel bars into the template, pouring the bridge deck C, moving the bridge deck A to a plate storage area, integrally moving the bridge deck B to a curing section, and integrally moving the bridge deck C to a matching end; 4) and pouring the next bridge deck plate by taking the bridge deck plate C as a matching plate. The invention has the characteristics of high production efficiency of the bridge deck slab, no need of installing templates during pouring of wet joints and the like.)

1. A method for prefabricating a bridge deck by using a stub matching method is characterized by comprising the following steps:

1) installing a bridge deck A template at the section to be poured, putting reinforcing steel bars into the template, pouring the bridge deck A, unloading wing plate templates at two sides of the bridge deck A after the bridge deck A is finally set, and integrally moving the bridge deck A to the matching section;

2) installing a bridge deck B template at a section to be poured, putting steel bars into a mold, pouring the bridge deck B by taking the bridge deck A as a matching plate, unloading wing plate templates at two sides of the bridge deck B after the bridge deck B is finally set, integrally moving the bridge deck A to a curing section, and integrally moving the bridge deck B to a matching end;

3) taking the bridge deck B as a matching plate, installing a template of the bridge deck C on a section to be poured, putting steel bars into the template, pouring the bridge deck C, moving the bridge deck A to a plate storage area, integrally moving the bridge deck B to a curing section, and integrally moving the bridge deck C to a matching end;

4) and 3) taking the bridge deck C as a matching plate, and repeating the step 3) to pour the next bridge deck.

2. The method for prefabricating a bridge deck by using a stub matching method according to claim 1, wherein the bridge deck A formwork, the bridge deck B formwork and the bridge deck C formwork each comprise a central bottom formwork, a movable bottom formwork and wing plate formworks on two sides, the movable bottom formwork is hinged to one end of the central bottom formwork, a bottom supporting plate is arranged on the bridge deck at the hinged end of the movable bottom formwork, the wing plate formworks on two sides are fixed at a section to be poured, and the central bottom formwork and the movable bottom formwork can move along with the bridge deck A, the bridge deck B and the bridge deck C.

3. The method for prefabricating a bridge deck by using the stub matching method according to claim 2, wherein in the step 2), the movable bottom die of the matching plate is detached, so that the bottom supporting plate part of the matching plate extends forwards to overlap the bridge deck formwork of the section to be poured, and the overlapping length is determined according to specific requirements.

4. The method for prefabricating a bridge deck by using the stub matching method according to claim 2, wherein when the beam section is matched, the movable bottom die below the matching beam is hinged and laid down, the bottom of the matching side of the matching beam is in a suspended state, the matching plate is moved by using a trolley, and a bottom supporting plate of the matching plate is lapped above a central bottom die of the section to be poured, and the lapping length of the bottom supporting plate and the central bottom die is 20-25 cm; when the bridge deck of the curve section is poured, the matching plate is rotated and transversely moved through the trolley, the size of the bridge deck template of the section to be poured is adjusted to the size required by linear control, the bottom support side of the matching plate is used as a matching surface during matching, and the vertical surface of the bridge deck template of the section to be poured is an inclined edge adjusting reducer.

5. The method for prefabricating a bridge deck by using a stub matching method according to claim 2, wherein in the step 2, the bridge deck of the matching section is used as the matching plate, the spatial position of the matching plate is adjusted according to the linear monitoring data to position the bridge deck formwork of the section to be poured, the reinforcement cage on the formwork of the section to be poured is adjusted, the wing plate formwork on both sides is installed, and concrete is poured.

6. The method for prefabricating a bridge deck according to claim 5, wherein in the step 3), the bridge deck B is moved by a trolley, the bottom pallet of the bridge deck B is lapped on the formwork of the bridge deck C, the bridge deck B is rotated and transversely moved by the trolley to the linearly controlled deck size, the wing plates on both sides are installed, the reinforcing steel bars are cast into the formwork, and the bridge deck C is poured.

7. The method for prefabricating a bridge deck according to claim 2, wherein the thickness of the bottom pallet is 5-6cm and the width of the bottom pallet is 2-3mm less than the predetermined design.

8. The method for prefabricating a bridge deck by a stub matching method as claimed in claim 2, wherein a guardrail base formwork is provided on the wing plates at both sides so that the bridge deck and the guardrail base are integrally cast.

9. The method for prefabricating a bridge deck using a stub matching method as claimed in claim 1, wherein the bridge deck is numbered piece by piece in the manufacture thereof to be installed plate by plate in the installation.

Technical Field

The invention relates to the field of bridge deck prefabrication. More particularly, the present invention relates to a method for prefabricating a bridge deck using a stub matching method.

Background

The early bridge deck prefabricating construction process of various beam type steel plate combined beam bridges and large beam steel plate combined beam bridges mostly adopts longitudinal and transverse block prefabrication, the width of a wet joint is generally 50-80 cm, and concrete of a guardrail base is poured on site at a bridge site. And dividing the bridge deck into a plurality of prefabricated block sections along the longitudinal bridge direction and the transverse bridge direction, and installing after prefabrication. And (4) reserving reinforcing steel bars at the wet joint, welding and connecting the wet joint reinforcing steel bars after the bridge deck is installed, and pouring the wet joint through a hanging die. The construction method has less transportation and hoisting limit conditions. However, the amount of work for field operation is relatively large, especially the amount of field installation and construction is large, the construction quantity and the construction period of wet joints occupy a long time, the welding difficulty of reinforcing steel bars is large, the field welding period is long, and the standardized construction is not facilitated.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.

The invention also aims to provide a method for prefabricating a bridge deck by using a stub matching method, which takes three sets of templates as a unit, each unit is matched and circularly produced, and the bridge deck is not provided with transverse prestressed tendons, so that the equal strength and tensioning time of concrete is reduced, the circulation time of the deck is shortened, and the production efficiency is improved.

To achieve these objects and other advantages and in accordance with the purpose of the invention, a method for prefabricating a bridge deck using a stub matching method is provided, which includes the steps of:

1) installing a bridge deck A template at the section to be poured, putting reinforcing steel bars into the template, pouring the bridge deck A, unloading wing plate templates at two sides of the bridge deck A after the bridge deck A is finally set, and integrally moving the bridge deck A to the matching section;

2) installing a bridge deck B template at a section to be poured, putting steel bars into a mold, pouring the bridge deck B by taking the bridge deck A as a matching plate, unloading wing plate templates at two sides of the bridge deck B after the bridge deck B is finally set, integrally moving the bridge deck A to a curing section, and integrally moving the bridge deck B to a matching end;

3) taking the bridge deck B as a matching plate, installing a template of the bridge deck C on a section to be poured, putting steel bars into the template, pouring the bridge deck C, moving the bridge deck A to a plate storage area, integrally moving the bridge deck B to a curing section, and integrally moving the bridge deck C to a matching end;

4) and 3) taking the bridge deck C as a matching plate, and repeating the step 3) to pour the next bridge deck.

According to the method, a bridge deck A is poured at a section to be poured, the bridge deck A is moved to a matching section after the bridge deck A is finally set, the bridge deck A is taken as a matching plate, a bridge deck B is poured at the section to be poured, the bridge deck A is moved to a curing section, the bridge deck B is moved to the matching section after the bridge deck B is finally set, the bridge deck B is taken as a matching plate, a bridge deck C is poured at the section to be poured, the bridge deck is moved to a plate storage area to be continuously maintained, the bridge deck B is moved to the curing section, the bridge deck C is moved to the matching section, the next bridge deck is poured by taking the bridge deck C as a matching plate, and the next bridge deck is produced in a circulating manner.

Preferably, decking A template, decking B template and decking C template all include the pterygoid lamina template of central bottom die, activity bottom die and both sides, the activity bottom die articulates the one end at central bottom die, the length of activity bottom die is 40cm, is provided with the bottom plate on the decking of activity bottom die hinged end, and wherein, both sides pterygoid lamina template are fixed and are waited to water the section, and central bottom die and activity bottom die can remove along with decking A, decking B, decking C. Combining the central bottom die and the movable bottom die of the bridge deck A template with wing plate templates fixed on two sides, and pouring the bridge deck A; after the bridge deck A is finally set, the wing plate templates on two sides are unloaded, the bridge deck A, the central template and the movable template at the bottom of the bridge deck A are moved to a matching section, the central template and the movable template of the bridge deck B are combined with the wing plate templates fixed on two sides, the bridge deck A is used as a matching plate, and the bridge deck B is poured; and after the bridge deck B is finally set, the wing plate templates on two sides are unloaded, the bridge deck A is moved to a curing section, the bridge deck B is moved to a matching section, the central template and the movable template of the bridge deck C are combined with the wing plate templates fixed on two sides, the bridge deck B is used as a matching plate, the bridge deck C is poured, after the bridge deck C is finally set, the wing plate templates on two sides are unloaded, the bridge deck A is moved to a plate storage area, the central template and the movable template of the bridge deck A are unloaded, the bridge deck B is moved to the curing section, the bridge deck C is moved to the matching section, the central template and the movable template of the bridge deck A are combined with the wing plate templates on two sides, and the bridge deck C is used as a matching plate to produce the next bridge deck. This is repeated to produce the next deck slab. The invention uses 3 sets of the central template and the movable template, namely the central template, the movable template and a set of wing plate template of the bridge deck A, the bridge deck B and the bridge deck C, to realize the continuous production of the bridge deck, the production efficiency is higher, and the prefabricated linear precision of the produced bridge deck can be well controlled.

Preferably, in the step 2), the movable bottom die of the matching plate is dismounted, so that the bottom supporting plate part of the matching plate extends forwards and is overlapped on the bridge deck plate template of the section to be poured, and the overlapping length is determined according to specific requirements.

Preferably, when the beam sections are matched, the movable bottom die below the matching beam is hinged and placed, the bottom of the matching side of the matching beam is in a suspended state, the matching plate is moved by using a trolley, a bottom supporting plate of the matching plate is lapped above a central bottom die of the section to be poured, and the lapping length of the bottom supporting plate and the central bottom die is 20-25 cm; when pouring the deck slab of curve section, through dolly rotation, lateral shifting matching board, will wait to water section deck slab template and adjust to the size according to linear control needs, adjust to the vertical length promptly and be the right trapezoid that one end is long, one end is short in order to solve the problem of curve section reducer, during the matching, regard the collet side of matching board as the matching surface, wait to water the perpendicular of section deck slab mould and be the hypotenuse adjustment reducer.

Preferably, in the step 2, the bridge deck of the matching section is used as a matching plate, the spatial position of the matching plate is adjusted according to the linear monitoring data to position the bridge deck formwork of the section to be poured, the steel reinforcement framework on the formwork of the section to be poured is adjusted, the wing plate molds on two sides are installed, and concrete is poured.

Preferably, in the step 3), the bridge deck B is moved by using a trolley, a bottom supporting plate of the bridge deck B is lapped on a template of the bridge deck C, the bridge deck B is rotated and transversely moved to the size of a linearly controlled panel by using the trolley, wing plates on two sides are installed, reinforcing steel bars are placed into the template, and the bridge deck C is poured.

Preferably, the thickness of the bottom supporting plate is 5-6cm, and the width of the bottom supporting plate is 2-3mm less than the preset width.

Preferably, guardrail base templates are arranged on wing plates on two sides, so that the bridge deck and the guardrail bases are integrally molded and poured.

Preferably, the deck boards are numbered piece by piece as they are produced for installation board by board.

The invention at least comprises the following beneficial effects:

firstly, the bottom supporting plate is arranged at the end part of the prefabricated bridge deck slab, the prefabricated bridge deck slab is closely attached to the box girder slab through the bottom supporting plate after being assembled, the process of installing a wet joint bottom template on site can be omitted in the wet joint pouring process, the bottom supporting plate is directly used as an installing template, template-free wet joint construction is achieved, and the construction progress of wet joints is accelerated.

The guardrail base and the bridge deck are integrally prefabricated, so that the working procedures of on-site concrete pouring are reduced, and the quality control is facilitated.

The bridge deck is prefabricated according to a short-line matching method, the prefabrication precision is ensured, the bridge deck is matched block by block, numbered block by block in sequence and assembled in sequence, and the linear control achieves the expected effect, so that the close-fitting assembly among the bridge deck sections is facilitated.

And the template is designed into three sets of central templates, a movable bottom plate and a set of two-side wing plate templates, the central templates, the movable bottom plate and the two-side wing plate templates are circularly matched for production, and the bridge deck is not provided with transverse prestressed tendons, so that the equal strength and tensioning time of concrete is reduced, the circulation time of the deck is shortened, the production efficiency is improved, and 1 deck can be produced by one set of wing plate templates every day.

The prefabricated bridge deck can be hoisted by adopting equipment such as a crane, a gantry crane, a bridge girder erection machine and the like according to terrain conditions, and is high in hoisting and positioning speed and convenient and rapid to install.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a flow chart of an embodiment of the present invention;

FIG. 2 is a schematic view of an installation structure of a bridge deck form according to an embodiment of the present invention;

FIG. 3 is a schematic view of the center form and two side panels prior to installation in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of the arrangement of three sets of center forms distributed on a heavy rail according to an embodiment of the present invention;

fig. 5 illustrates a schematic structural view of a bridge deck.

1. A heavy rail; 2. a central template; 3. a wing panel template; 4. a guardrail base template; 5. a bottom pallet; 6. guardrail base.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Example 1

As shown in fig. 1 to 5, a method for prefabricating a bridge deck using a stub matching method includes the steps of:

1) installing a bridge deck A template at the section to be poured, putting steel bars into the template, pouring the bridge deck A, unloading wing plate templates 3 at two sides of the bridge deck A after the bridge deck A is finally set, and integrally moving the bridge deck A to the matching section;

2) installing a bridge deck B template at the section to be poured, putting steel bars into a mold, pouring the bridge deck B by taking the bridge deck A as a matching plate, unloading wing plate templates 3 on two sides of the bridge deck B after the bridge deck B is finally set, integrally moving the bridge deck A to the curing section, and integrally moving the bridge deck B to the matching end;

3) taking the bridge deck B as a matching plate, installing a template of the bridge deck C on a section to be poured, putting steel bars into the template, pouring the bridge deck C, moving the bridge deck A to a plate storage area, integrally moving the bridge deck B to a curing section, and integrally moving the bridge deck C to a matching end;

4) and 3) taking the bridge deck C as a matching plate, and repeating the step 3) to pour the next bridge deck.

The heavy rail 1 is divided into a section to be poured, a matching section and a curing section, the bridge deck A template, the bridge deck B template and the bridge deck C template can slide on the heavy rail 1 under the action of the trolley, and the wing plate templates 3 on the two sides are fixed. Moving a bridge deck A template to a section to be poured, combining the bridge deck A template with two side wing plate templates 3, putting steel bars into a mold, installing comb plates at two ends, pouring a bridge deck A at the section to be poured, moving the bridge deck A to a matching section after the bridge deck A is finally set, pouring a bridge deck B at the section to be poured, moving the bridge deck A to a curing section, moving the bridge deck B to the matching section after the bridge deck B is finally set, pouring a bridge deck C at the section to be poured, moving the bridge deck B to a board storage area for continuous maintenance, moving the bridge deck B to the curing section, moving the bridge deck C to the matching section, pouring a next bridge deck with the bridge deck C as the matching plate, and entering a next cycle after the bridge deck A template is corrected to produce a next bridge deck.

In another technical scheme, decking A template, decking B template and decking C template all include the pterygoid lamina template 3 of central bottom die, activity bottom die and both sides, the activity bottom die articulates the one end at the central bottom die, the length of activity bottom die is 40cm, is provided with bottom plate 5 on the decking of activity bottom die hinged end, and wherein, both sides pterygoid lamina template 3 is fixed and is waited to water the section, and central bottom die and activity bottom die can remove along with decking A, decking B, decking C. The central bottom die and the movable bottom die of the bridge deck A template are combined with the wing plate templates 3 fixed on two sides, the comb plate templates at two ends are installed, and the bridge deck A is poured; after the bridge deck A is finally set, the wing plate templates 3 on two sides are unloaded, the bridge deck A, the central template 2 and the movable template at the bottom of the bridge deck A are moved to a matching section, the central template 2 and the movable template of the bridge deck B are combined with the wing plate templates 3 fixed on two sides, and the bridge deck A is used as a matching plate to pour the bridge deck B; and after the bridge deck B is finally set, the wing plate templates 3 on two sides are unloaded, the bridge deck A is moved to a curing section, the bridge deck B is moved to a matching section, the central template 2 and the movable template of the bridge deck C are combined with the wing plate templates 3 fixed on two sides, the bridge deck B is taken as a matching plate, the bridge deck C is poured, after the bridge deck C is finally set, the wing plate templates 3 on two sides are unloaded, the bridge deck A is moved to a plate storage area and the central template 2 and the movable template of the bridge deck A are unloaded, the bridge deck B is moved to the curing section, the bridge deck C is moved to the matching section, the central template 2 and the movable template of the bridge deck A are combined with the wing plate templates 3 on two sides, and the bridge deck C is taken as a matching plate to produce the next bridge deck. This is repeated to produce the next deck slab. The invention uses 3 sets of the central template 2 and the movable template, namely the central template 2, the movable template and the wing plate template 3 of the bridge deck A, the bridge deck B and the bridge deck C, to realize the continuous production of the bridge deck, the production efficiency is higher, one bridge deck can be generated every day, and the prefabricated linear precision of the produced bridge deck can be well controlled.

In another technical scheme, in the step 2), the movable bottom die of the matching plate is dismounted, so that the bottom supporting plate 5 part of the matching plate extends forwards to be overlapped on the bridge deck slab template of the section to be poured, and the overlapping length is determined according to specific requirements.

In another technical scheme, when beam sections are matched, a movable bottom die below a matching beam is hinged and placed, the bottom of the matching side of the matching beam is in a suspended state, a trolley is used for moving the matching plate, a bottom supporting plate 5 of the matching plate is lapped above a central bottom die of a section to be poured, and the lapping length of the bottom supporting plate and the central bottom die is 20-25 cm; when pouring the deck slab of curve section, through dolly rotation, lateral shifting matching board, will wait to water section deck slab template and adjust to the size according to linear control needs, adjust to the vertical length promptly and be the right trapezoid that one end is long, one end is short in order to solve the problem of curve section reducer, during the matching, regard the collet side of matching board as the matching surface, wait to water the perpendicular of section deck slab mould and be the hypotenuse adjustment reducer.

In another technical scheme, in the step 2, the bridge deck of the matching section is used as a matching plate, the spatial position of the matching plate is adjusted according to the linear monitoring data to position a bridge deck formwork of the section to be poured, a steel reinforcement framework on the formwork of the section to be poured is adjusted, wing plate molds on two sides are installed, and concrete is poured.

In another technical scheme, in the step 3), the bridge deck B is moved by using a trolley, the bottom supporting plate 5 of the bridge deck B is lapped on the template of the bridge deck C, the bridge deck B is rotated and transversely moved to the size of the linearly controlled panel by using the trolley, wing plates on two sides are installed, the reinforcing steel bars are placed into the template, and the bridge deck C is poured.

In another technical scheme, the thickness of the bottom supporting plate 5 is 5-6cm, and the width of the bottom supporting plate 5 is 2-3mm less than the preset design.

In another technical scheme, guardrail base templates 4 are arranged on wing plates on two sides, so that the bridge deck and the guardrail bases 6 are integrally formed and poured.

In another technical scheme, the bridge deck boards are numbered piece by piece during the production of the bridge deck boards so as to be installed plate by plate when the bridge deck boards are installed.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. The invention, therefore, is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.