CN113502753A - Bridge assembly type prefabricated guardrail installation construction method - Google Patents
Bridge assembly type prefabricated guardrail installation construction method Download PDFInfo
- Publication number
- CN113502753A CN113502753A CN202110927837.0A CN202110927837A CN113502753A CN 113502753 A CN113502753 A CN 113502753A CN 202110927837 A CN202110927837 A CN 202110927837A CN 113502753 A CN113502753 A CN 113502753A
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- guardrail
- prefabricated
- installation
- concrete
- prefabricated guardrail
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- 238000009434 installation Methods 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 239000004567 concrete Substances 0.000 claims abstract description 75
- 238000012423 maintenance Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000012858 resilient material Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
-
- 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
-
- 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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a bridge fabricated precast guardrail installation construction method, which comprises the following steps: s001, measuring and paying off a concrete beam before the prefabricated guardrail is installed; s002, performing interface treatment on the concrete beam before the prefabricated guardrail is installed; s003, mounting the prefabricated guardrail on the concrete beam in place; s004, repeating the steps S002 and S003 until the installation of the whole bridge prefabricated guardrail in place is completed; and S005, performing concrete pouring and maintenance on the joint between the prefabricated guardrail and the concrete beam. The invention has the beneficial effects that: the original work such as the installation of the bridge anti-collision wall template with great danger, the concrete pouring, the template dismantling and the like is cancelled, the working safety is improved, the working efficiency is improved, the influence on the surrounding environment and traffic is small, the integral linear control of the appearance is good, and the popularization value is high.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a bridge assembly type prefabricated guardrail mounting construction method.
Background
With the vigorous development of bridge construction in China, the construction environment of bridges is more and more emphasized by owners, design and construction units. The traditional bridge prefabricated guardrail is constructed in a mode of pouring concrete on site, the construction risk of installing and removing the template on site is high, the construction period is long, the construction quality control difficulty is high, and the influence on site traffic is high.
On the premise of ensuring the engineering quality, the method reduces the on-site concrete pouring engineering quantity as much as possible, reduces the construction occupied area and the construction period, and ensures that the bridge construction is more environment-friendly, safer, high in quality and low in consumption, thereby being a problem to be solved urgently.
Disclosure of Invention
The invention aims to: the invention provides a bridge assembly type prefabricated guardrail mounting construction method, which solves the problems of high construction risk, long construction period and difficult quality control of the conventional bridge guardrail.
The purpose of the invention is realized by the following technical scheme:
a bridge fabricated precast guardrail installation construction method comprises the following steps:
s001, measuring and paying off a concrete beam before the prefabricated guardrail is installed;
s002, performing interface treatment on the concrete beam before the prefabricated guardrail is installed;
s003, mounting the prefabricated guardrail on the concrete beam in place;
s004, repeating the steps S002 and S003 until the installation of the whole bridge prefabricated guardrail in place is completed;
and S005, performing concrete pouring and maintenance on the joint between the prefabricated guardrail and the concrete beam.
Further, in the step S001, the position where the prefabricated guard rail is installed on the concrete beam is measured and lofted in advance for subsequent installation and positioning.
Further, in the step S002, chiseling and cleaning are performed on the concrete at the installation position of the prefabricated guardrail on the top surface of the concrete beam, so as to ensure the smoothness and cleanness of the connection position, and to facilitate the improvement of the connection quality. And carry out mortar to prefabricated guardrail installation support position and make level and place the installation support, the mortar is used for supporting the location to the outer reinforcing bar of prefabricated guardrail, and the support is used for supporting the location to the groove face of prefabricated guardrail, makes its elevation reach plan elevation.
Further, in the step S003, the outer fence steel bars of the prefabricated guardrail and the outer beam steel bars of the concrete beam are oppositely arranged and bound to be connected, the outer fence steel bars and the outer beam steel bars are at the joints where concrete is to be poured, concrete is poured through the steel bar overlapping between the two structural members, the reinforced concrete connection between the two structural members is realized, and the connection is ensured to be reliable and stable.
Further, in the step S003, the unfilled corner groove of the prefabricated guardrail is close to the concrete beam, the outer reinforcement of the guardrail in the unfilled corner groove is opposite to the outer reinforcement of the concrete beam at the outer edge, and openings at two sides of the unfilled corner groove face the inner side and the bottom side respectively. The position of pouring is reserved in the one corner of prefabricated guardrail connection, makes things convenient for the connection construction in later stage. One side of the angle lacking groove is opposite to the joint of the two parts by the lower part, and the other side of the angle lacking groove is close to the inner part, so that the construction personnel can conveniently complete other operations required by installation and construction on the inner side.
Further, in the step S003, a high-pressure retractable elastic material is laid at a vertical gap between the concrete beam and the prefabricated guardrail. The high-compression resilience material is used for plugging the gap, so that the concrete is prevented from leaking during pouring.
Further, in the step S003, a diagonal brace with an adjustable length is installed between the top of the prefabricated guardrail and the bridge deck of the existing concrete beam, and the line shape and the elevation of the prefabricated guardrail are adjusted to a designed position. The diagonal brace supports between prefabricated guardrail and concrete beam, and the bottom of prefabricated guardrail is placed on the concrete beam, and the top supports through the diagonal brace again, realizes the stable installation of placing of prefabricated guardrail.
Further, in step S004, a rigid foam board is installed between the two prefabricated guardrails, and an elastic waterproof sealant is applied between the two prefabricated guardrails. Because the prefabricated guardrail is the structure of segment installation, consequently execute between two adjacent prefabricated guardrails and do the sealant, guarantee the leakproofness between the both clearances, concrete emergence when avoiding pouring leaks thick liquid.
Further, in the step S005, after the installation and adjustment of the whole span of the prefabricated guardrail are completed, the ultra-high-strength UHPC concrete is poured, and after the UHPC concrete reaches the designed strength, the concrete is cured as required. The prefabricated guardrail and the concrete beam are fixedly connected by utilizing the concrete, and the whole structure is reliable.
Further, in the step S005, a side form and an end form are installed at the opening of the unfilled corner groove of the prefabricated guardrail, and concrete is poured through a grouting hole reserved in the prefabricated guardrail. The connection part is blocked through the template, so that a closed pouring space is formed, concrete is poured into the upper part of the building space through the reserved pouring hole, and the pouring space can be filled.
The invention has the beneficial effects that: the original work such as the installation of the bridge anti-collision wall template with great danger, the concrete pouring, the template dismantling and the like is cancelled, the working safety is improved, the working efficiency is improved, the influence on the surrounding environment and traffic is small, the integral linear control of the appearance is good, and the popularization value is high.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
Drawings
Fig. 1 is a schematic structural view of the prefabricated guard rail of the present invention.
Fig. 2 is a schematic structural view of a concrete beam according to the present invention.
Fig. 3 is a schematic structural diagram of the present invention.
In the figure: 101 is a prefabricated guardrail, 102 is a concrete beam, 103 is a supporting bracket, 104 is adjusting mortar, 105 is high-pressure retraction elastic material, 106 is a length-adjustable diagonal brace, 107 is a side template, 108 is a reserved grouting hole, and 109 is UHPC concrete.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1 to 3, a method for installing and constructing a prefabricated guardrail of a bridge assembly type includes the following steps:
s001, measuring and setting out a concrete beam 102 before the prefabricated guardrail 101 is installed;
s002, performing interface treatment on the concrete beam 102 before the prefabricated guardrail 101 is installed;
s003, mounting the prefabricated guardrail 101 on the concrete beam 102 in place;
s004, repeating the steps S002 and S003 until the installation of the whole bridge prefabricated guardrail in place is completed;
and S005, performing concrete pouring and maintenance on the joint between the prefabricated guardrail 101 and the concrete beam 102.
In the step S001, the installation position of the prefabricated guard rail 101 is measured and lofted in advance on the concrete beam 102 for subsequent installation and positioning, and the position of the inner edge of the prefabricated guard rail is indicated by infrared, laser and other methods when the prefabricated guard rail segment is installed.
In the step S002, chiseling and cleaning the concrete at the installation position of the prefabricated guardrail 101 on the top surface of the concrete beam 102, adjusting mortar 104 to the installation and support position of the prefabricated guardrail 101 for leveling, placing the installation and support bracket 103, supporting and positioning the reinforcement outside the prefabricated guardrail by the support bracket, and adjusting the mortar to support and position the groove surface of the corner-lacking groove of the prefabricated guardrail so as to enable the elevation of the prefabricated guardrail to reach the planned elevation.
In the step S003, a high-compression resilient material 105 is laid at a vertical gap between the concrete beam 102 and the precast guardrail 101, and the high-compression resilient material is located outside the corner cut groove and used for plugging the gap between the precast guardrail and the concrete beam.
And then, hoisting the prefabricated guardrail 101 to be about 5cm above the supporting bracket by adopting a special lifting appliance, adjusting the installation and in-place posture of the prefabricated guardrail through a chain block above the special lifting appliance, and slowly placing the prefabricated guardrail 101 on the supporting bracket 103.
During hoisting, the corner lacking groove of the prefabricated guardrail 101 is close to the concrete beam 102, the outside-rail steel bars in the corner lacking groove are arranged opposite to the outside-beam steel bars on the outer edge of the concrete beam, openings on two sides of the corner lacking groove face the inner side and the bottom side respectively, binding connection of the steel bars is carried out, and the outside-rail steel bars and the outside-beam steel bars are joints to be subjected to concrete pouring.
And a diagonal brace 106 with adjustable length is arranged between the top of the prefabricated guardrail and the bridge floor of the existing concrete beam, and the line shape and the elevation of the prefabricated guardrail are adjusted to the designed position. And (4) checking whether the high-pressure retraction elastic material between the concrete beam and the prefabricated guardrail is installed in place or not, and plugging the high-pressure retraction elastic material if a gap exists.
In the step S004, a rigid foam board is installed between two prefabricated guardrails 101, after the installation of the single-sided prefabricated guardrail on the upper portion of each bridge span is completed, the line shape and the elevation of all the prefabricated guardrails are adjusted by taking the span as a unit, and after the adjustment is completed, an elastic waterproof sealing paste is applied between the two prefabricated guardrails 101, so as to realize the sealing and plugging between the two adjacent prefabricated guardrails.
In step S005, after the installation and adjustment of the whole span prefabricated guardrail are completed, the side formworks and the end formworks 107 are installed at the unfilled corner groove openings of the prefabricated guardrail 101 to form a closed pouring space. Pouring concrete through the reserved grouting holes 108 of the prefabricated guardrail, pouring ultra-high-strength UHPC concrete 109, and curing the concrete as required after the UHPC concrete 109 reaches the designed strength.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The bridge fabricated prefabricated guardrail mounting construction method is characterized by comprising the following steps:
s001, measuring and paying off a concrete beam before the prefabricated guardrail is installed;
s002, performing interface treatment on the concrete beam before the prefabricated guardrail is installed;
s003, mounting the prefabricated guardrail on the concrete beam in place;
s004, repeating the steps S002 and S003 until the installation of the whole bridge prefabricated guardrail in place is completed;
and S005, performing concrete pouring and maintenance on the joint between the prefabricated guardrail and the concrete beam.
2. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: and in the step S001, measuring and lofting the installation position of the prefabricated guardrail on the concrete beam in advance for subsequent installation and positioning.
3. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: in the step S002, chiseling and cleaning are performed on the concrete at the installation position of the prefabricated guardrail on the top surface of the concrete beam, and mortar leveling and installation support placement are performed on the installation support position of the prefabricated guardrail, so that the elevation of the prefabricated guardrail reaches the planned elevation.
4. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: and in the step S003, the outer fence steel bars of the prefabricated guardrail and the outer beam steel bars of the concrete beam are oppositely arranged and are bound and connected, and the outer fence steel bars and the outer beam steel bars are joints for concrete pouring.
5. The installation and construction method of the bridge fabricated precast guardrail according to claim 1 or 4, characterized in that: in the step S003, the unfilled corner groove of the prefabricated guardrail is close to the concrete beam, the off-rail reinforcement in the unfilled corner groove is opposite to the off-beam reinforcement at the outer edge of the concrete beam, and the openings at the two sides of the unfilled corner groove face the inner side and the bottom side respectively.
6. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: and in the step S003, a high-pressure retraction elastic material is paved at a vertical gap between the concrete beam and the prefabricated guardrail.
7. The installation and construction method of the bridge fabricated precast guardrail according to claim 1 or 6, characterized in that: and in the step S003, installing a diagonal brace with adjustable length between the top of the prefabricated guardrail and the bridge deck of the existing concrete beam, and adjusting the line shape and the elevation of the prefabricated guardrail to a designed position.
8. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: in the step S004, a rigid foam plate is arranged between the two prefabricated guardrails, and elastic waterproof sealing paste is applied between the two prefabricated guardrails.
9. The bridge fabricated precast guardrail installation and construction method of claim 1, characterized in that: in the step S005, after the installation and adjustment of the whole span prefabricated guardrail are completed, the ultra-high-strength UHPC concrete is poured, and after the UHPC concrete reaches the design strength, the concrete is cured as required.
10. The installation and construction method of the bridge fabricated precast guardrail according to claim 1 or 9, characterized in that: in the step S005, a side form and an end form are installed at the opening of the unfilled corner groove of the prefabricated guardrail, and concrete is poured through the reserved grouting hole of the prefabricated guardrail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110927837.0A CN113502753A (en) | 2021-08-13 | 2021-08-13 | Bridge assembly type prefabricated guardrail installation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110927837.0A CN113502753A (en) | 2021-08-13 | 2021-08-13 | Bridge assembly type prefabricated guardrail installation construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113502753A true CN113502753A (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110927837.0A Pending CN113502753A (en) | 2021-08-13 | 2021-08-13 | Bridge assembly type prefabricated guardrail installation construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1124014A2 (en) * | 2000-01-27 | 2001-08-16 | Maba Fertigteilindustrie GmbH | Concrete wall element for guardrail on roads |
| CN101864744A (en) * | 2010-06-03 | 2010-10-20 | 河南省公路工程局集团有限公司 | Construction method of novel wall fence for highway |
| CN107489098A (en) * | 2017-07-06 | 2017-12-19 | 浙江交工宏途交通建设有限公司 | Concrete prefabricated solder type guardrail and construction method of installation |
| CN110205929A (en) * | 2019-05-20 | 2019-09-06 | 浙江交工宏途交通建设有限公司 | A kind of precast concrete assembly guardrail and installation method |
| CN111979895A (en) * | 2020-08-14 | 2020-11-24 | 上海市政工程设计研究总院（集团）有限公司 | Groove connecting structure of prefabricated anti-collision guardrail and adjacent components and construction method thereof |
-
2021
- 2021-08-13 CN CN202110927837.0A patent/CN113502753A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1124014A2 (en) * | 2000-01-27 | 2001-08-16 | Maba Fertigteilindustrie GmbH | Concrete wall element for guardrail on roads |
| CN101864744A (en) * | 2010-06-03 | 2010-10-20 | 河南省公路工程局集团有限公司 | Construction method of novel wall fence for highway |
| CN107489098A (en) * | 2017-07-06 | 2017-12-19 | 浙江交工宏途交通建设有限公司 | Concrete prefabricated solder type guardrail and construction method of installation |
| CN110205929A (en) * | 2019-05-20 | 2019-09-06 | 浙江交工宏途交通建设有限公司 | A kind of precast concrete assembly guardrail and installation method |
| CN111979895A (en) * | 2020-08-14 | 2020-11-24 | 上海市政工程设计研究总院（集团）有限公司 | Groove connecting structure of prefabricated anti-collision guardrail and adjacent components and construction method thereof |
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Application publication date: 20211015 |