CN105672172A - Construction method for Dacromet steel highway handrail - Google Patents
Construction method for Dacromet steel highway handrail Download PDFInfo
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- CN105672172A CN105672172A CN201610006542.9A CN201610006542A CN105672172A CN 105672172 A CN105672172 A CN 105672172A CN 201610006542 A CN201610006542 A CN 201610006542A CN 105672172 A CN105672172 A CN 105672172A
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- construction method
- dacroment
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention belongs to the technical field of highway facilities and particularly relates to a construction method for a Dacromet steel highway handrail. The construction method for the Dacromet steel highway handrail includes the following steps of firstly, construction preparation, secondly, anticorrosive treatment of corrugated plates and uprights, thirdly, measuring, positioning and sampling, fourthly, foundation excavation and pouring, fifthly, upright installation, sixthly, installation of anti-stop blocks, brackets and the corrugated plates, seventhly, end socket installation and eighthly, acceptance check. The construction method is designed reasonably according to the features of the Dacromet steel highway handrail, and the safety performance of the Dacromet steel highway handrail is greatly improved.
Description
Technical field
The invention belongs to the technical field of highway facilities, be specifically related to the construction method of a kind of Dacroment steel highway barrier.
Background technology
Highway barrier is significant for the pernicious vehicle accident especially special, great that tries to forestall traffic accidents. Corrugated beam barrier conventional at present is semi-rigidity rail principal mode, it it is the important component part of expressway traffic safety facilities, this guardrail adopts corrugated steel guard rail plate mutually to splice, and continuous structure it is made up of upright supports, available structure bulk deformation absorbs vehicle crash energy, errant vehicle is forced to change direction in case going out guardrail, thus reducing causality loss. Its effect is to prevent the vehicle run at high speed run-off-road or cross median strip and sail into causing major traffic accidents to track in out of control situation, it is ensured that a kind of fender system of driver and passenger survival safety.
Corrugated beam barrier quality depends on raw-material quality and construction quality, directly influences traffic safety and design life, gently then causes premature aging, heavy then cannot play safety guarantee effect when accident occurs.
Due to features such as guardrail sectional dimension are little, change of shape is big, reinforcement density is big, construction length is big, so it is big according to existing highway guardrail construction party rule difficulty of construction, simultaneously presentation quality existing defects, embodies a concentrated reflection of, honeycomb, pitted skin inconsistent into lines irregularity, concrete color, race mould, surface tympanites etc. These defects have had a strong impact on the external aesthetical of guardrail and have been worth and protection quality.
Summary of the invention
Present invention aims to the defect of above-mentioned existence and provide the construction method of a kind of Dacroment steel highway barrier, this construction method is reasonable in design for the feature of Dacroment steel highway barrier, substantially increases the security performance of Dacroment steel highway barrier.
The technical scheme is that the construction method of a kind of Dacroment steel highway barrier, comprise the following steps: (1) preparation of construction; (2) preservative treatment of corrugated sheet and column; (3) measurement, construction layout; (4) foundation excavation, build; (5) column is installed; (6) obstruction block, bracket, corrugated sheet are installed; (7) termination is installed; (8) check and accept; It is characterized in that: the preservative treatment of described step (2) corrugated sheet and column, particularly as follows: corrugated sheet and column are carried out Dacroment masking liquid spraying by automatization's spray gun, makes each be reached the uniform thickness of 12～16 μm by the coating of spray plane;It is 22～25 DEG C that painting environments temperature controls, and Dacroment masking liquid uses temperature 23.5～25 DEG C; Corrugated sheet and column after spraying are sintered solidifying in time, and the time is 47～50min, and temperature is 341～345 DEG C; Tempering confining liquid is sprayed on corrugated sheet and the surface of column after sintering curing, wherein tempering confining liquid is made up of the raw material of volumes below proportioning: KH-5501.9%, zinc 14%, aluminum 2.5%, ethylene glycol 5%, GR-203 OPE emulsifying agent 2.5%, BYK-161 organosilicone spreading agent 0.15%, aqueous defoamer 0.1%, hydroxyethyl cellulose 0.1%, metal reflective powder 0.55%, and surplus is deionized water; Described step (4) foundation excavation, build in build the concrete that adopts concrete match ratio by weight and be: water: cement: sand: particle diameter is 9.5mm rubble: particle diameter is the big stone of 1cm～2cm: particle diameter is 4.75mm rubble: water reducer is 1.64: 3.87: 7.74: 5.41: 1.55:2.68:5.12.
Described step (4) foundation excavation, build middle key dimension length × wide × deeply for 355mm × 355mm × 410mm.
Described step (4) foundation excavation, the slump building middle casting concrete control at 14～17cm.
Described step (4) foundation excavation, build in build every layer concrete vibrating time and control at 1～1.5 minute.
Described step (4) foundation excavation, build the moving interval of vibrating spear in middle casting process and control within the operating radius scope of 1.2 times.
Described step (4) foundation excavation, the spacing built in middle casting process between vibrating spear and corrugated sheet control at 5～10cm.
Described step (4) foundation excavation, build vibrating spear in middle casting process and insert the degree of depth of lower-layer concrete 5～10cm.
The buried depth of described step (5) column installation process central post is more than 37cm.
The invention have the benefit that the construction method of the Dacroment steel highway barrier of the present invention feature for Dacroment steel highway barrier, construction method has been carried out special design, respectively to the preservative treatment of corrugated sheet and column with build and carried out further design, by the Dacroment preservative treatment of corrugated sheet and column with build the concrete proportioning adopted and be organically combined, the organic protection forming complete set is overall, and the security performance coefficient of highway barrier is improve 25.3%～31.4%; The concrete proportioning building employing makes its 7 days comprcssive strength improve 7.5%, and within 28 days, comprcssive strength improves 8.8%; Ensure that guardrail concrete surface is bright and clean attractive in appearance simultaneously.
The construction method (1) of described Dacroment steel highway barrier is rational in infrastructure; (2) safety durable: guardrail material is good, structural strength is high, embedded depth of foundation increases, can life-time service bear vehicle crash effect, prevent vehicle run-off-road, thus reducing causality loss; (3) quick construction.
The quality inspection statistical result that construction method of the present invention carries out an acceptance inspection is adopted to ask for an interview table 1
Table 1
Adopt the guardrail performance indications of construction method gained of the present invention in Table 2.
Table 2
| Sequence number | Project | Index | Inspection frequency and method |
| 1 | Non-volatile part (%) | 30 | GB1725, |
| 2 | Coating layer thickness (μm) | One is coated with >=8 | Metal calibrator |
| 3 | Adhesive force (level) | ≤2 | GB1720, |
| 4 | Pliability (mm) | ≤3 | GB/T1731-93, |
| 5 | Hardness (unit) | ≥0.70 | GB/T1730-93, |
| 6 | Shock-resistant (kg cm) | 50 | GB/T1732-93, |
| 7 | Wet-heat resisting (h) | 240 | GB/T174070, |
| 8 | Gloss % >= | 95 | GB/T1743, |
Detailed description of the invention
The present invention will be described in detail by the examples below.
The construction method of a kind of Dacroment steel highway barrier, comprises the following steps:
(1) preparation of construction: all materials of marching into the arena, it is necessary to there is the contents such as enterprise name, specifications and models, date of manufacture or lot number, production licence (manufacture special permit) and work certificate book;The packaging of the component such as corrugated sheet, column and mark should meet the regulation of GB/T6725. Guardrail must not in bulk be delivered goods, and should ensure that in lifting, transport, make product to deform in stacking process, damage (wound); The packaging of high intensity splice bolt auxiliary connection and mark perform with reference to the pertinent regulations of GB/T1231. The packaging of other securing members and mark perform with reference to the regulation of relevant criterion; All materials of marching into the arena should carry out disposable warehouse-in detection; Should investigate whether column place place exists the facility such as underground utilities, flowing line, or the situation that the soil degree of depth is not enough is buried at structure top; All workpiece should not cause the damage of anticorrosive coat because of transport, construction; Corrugated sheet and column must not on-the-spot welding and borings; Before normal construction, representational 100-200m section is selected to carry out test section construction, the embedding quality of comprehensive test fence upright, straightway, curved section, median opening termination guardrail linear quality, and corrugated sheet overlap joint, bolt fastening, obstruction block, bracket, corrugated sheet, termination installation quality, and establish quality control on construction standard engineering; Column buried depth, except the random withdrawing detection in scene, should adopt the detection methods such as impact elasticity ripple to carry out without damage testing.
(2) preservative treatment of corrugated sheet and column: corrugated sheet and column are carried out Dacroment masking liquid spraying by automatization's spray gun, makes each be reached the uniform thickness of 12～16 μm by the coating of spray plane; It is 22～25 DEG C that painting environments temperature controls, and Dacroment masking liquid uses temperature 23.5～25 DEG C; Corrugated sheet and column after spraying are sintered solidifying in time, and the time is 47～50min, and temperature is 341～345 DEG C; Tempering confining liquid is sprayed on corrugated sheet and the surface of column after sintering curing, wherein tempering confining liquid is made up of the raw material of volumes below proportioning: KH-5501.9%, zinc 14%, aluminum 2.5%, ethylene glycol 5%, GR-203 OPE emulsifying agent 2.5%, BYK-161 organosilicone spreading agent 0.15%, aqueous defoamer 0.1%, hydroxyethyl cellulose 0.1%, metal reflective powder 0.55%, surplus is deionized water.
(3) measurement, construction layout.
(4) foundation excavation, build: build middle key dimension length × wide × deeply for 355mm × 355mm × 410mm. Building the concrete that adopts concrete match ratio by weight is: water: cement: sand: particle diameter is 9.5mm rubble: particle diameter is the big stone of 1cm～2cm: particle diameter is 4.75mm rubble: water reducer is 1.64: 3.87: 7.74: 5.41: 1.55:2.68:5.12. The slump of casting concrete controls at 14～17cm. Build every layer concrete vibrating time to control at 1～1.5 minute. In casting process, the moving interval of vibrating spear controls within the operating radius scope of 1.2 times. In casting process, the spacing between vibrating spear and corrugated sheet controls at 5～10cm. In casting process, vibrating spear inserts the degree of depth of lower-layer concrete 5～10cm.
(5) column is installed: a column setting-out: carries out column setting-out according to design document, and with the position of the control columns such as bridge, passage, culvert, tunnel, median opening, EMERGENCY PHONE opening, route intersection, carries out ranging localization. During column setting-out, available adjustable plate regulates spacing, and utilizes distribution method to process spacing odd number. Whether investigation column place place exists the facility such as underground utilities, flowing line, or the situation that the soil degree of depth is not enough is buried at structure top. For accurate settingout and ensure guardrail linear, answer compartment to carry out pile No. and check and close.
B. column is installed: the buried depth of column installation process central post is more than 37cm.Column is installed and should be consistent with design document, and coordinates mutually with highway alignment. Employing squeezes into method when squeezing into deep, must not be extracted by column portion and be corrected, it is necessary to it all be extracted, again squeeze into after basis compaction again. Column cannot be driven into when requiring the degree of depth, forbids the ground of column with top welding, boring, must not use the column that saw is short. Employing is dug when burying method construction, and backfill soil should adopt good material compaction in layers, and backfill soil compaction degree is no less than design code value. Posthole in rock-filling embankment, application pellet backfills and tamps. When adopting boring method construction, apply the material backfill identical with roadbed after stud location, and it is real to be layered rammer packing.
When the section being covered with road surface arranges column, posthole from roadbed to surface layer below 5cm should adopt the backfill of identical with roadbed material compaction in layers, remaining part should adopt the material backfill identical with road surface compacting. It is positioned at the column in cubic meter of stone district, concrete foundation should be set according to the requirement of design document. It is arranged in the column of the concrete foundations such as foot bridge, passage, bright culvert, may be provided in pre-buried sleeve, fixed by perfusion mortar or concrete, or be connected with bridge guard belt basis by foundation bolt. The column of guardrail transition and end, should install by the coordinate of design code.
(6) obstruction block, bracket, corrugated sheet are installed: obstruction block, bracket should be fixed between guardrail board and column by connecting bolt, should adjust obstruction block, bracket makes it accurately in place before tightening connecting bolt. Guardrail board should be interconnected to longitudinal crossbeam by splice bolt, and is fixed on obstruction block, bracket or diaphragm by connecting bolt. Guardrail board stitching direction should be consistent with direction of traffic. Splice bolt must adopt high-strength bolt. When column spacing is irregular, available adjustable plate, beam are adjusted, the method that must not adopt on-site cutting guardrail board. All of connecting bolt and splice bolt just can should be tightened when regulation requires linear the reaching of guardrail.
(7) termination is installed: all kinds of end of guardrails should pass through splice bolt and firmly be connected with guardrail board, and bolt must adopt high-strength bolt.
(8) check and accept: the buried depth of fence upright, base specification, soil compaction degree, end and changeover portion place ought to meet the regulation of design specification and design document. Stud, column middle-range, perpendicularity, corrugated sheet centre-height should meet designing requirement. Straightway guardrail must not have significantly concavo-convex, fluctuation; Curved section guardrail should be round and smooth smooth and easy, consistent with alignment coordination; Linear being consistent with design document of median opening termination guardrail. Corrugated sheet lapping direction is correct, overlap joint smooth-going, and packing ring is complete, and bolt fastens. Obstruction block, bracket, corrugated sheet, termination installation should be consistent with design document, installation puts in place, should not have obvious deformation, torsion, inclination. Column and cap firmly install, and its top should without defects such as obvious turned-down edge, deformation, crackings.
Claims (8)
1. a construction method for Dacroment steel highway barrier, comprises the following steps: (1) preparation of construction; (2) preservative treatment of corrugated sheet and column; (3) measurement, construction layout; (4) foundation excavation, build; (5) column is installed; (6) obstruction block, bracket, corrugated sheet are installed; (7) termination is installed; (8) check and accept; It is characterized in that: the preservative treatment of described step (2) corrugated sheet and column, particularly as follows: corrugated sheet and column are carried out Dacroment masking liquid spraying by automatization's spray gun, makes each be reached the uniform thickness of 12～16 μm by the coating of spray plane;It is 22～25 DEG C that painting environments temperature controls, and Dacroment masking liquid uses temperature 23.5～25 DEG C; Corrugated sheet and column after spraying are sintered solidifying in time, and the time is 47～50min, and temperature is 341～345 DEG C; Tempering confining liquid is sprayed on corrugated sheet and the surface of column after sintering curing, wherein tempering confining liquid is made up of the raw material of volumes below proportioning: KH-5501.9%, zinc 14%, aluminum 2.5%, ethylene glycol 5%, GR-203 OPE emulsifying agent 2.5%, BYK-161 organosilicone spreading agent 0.15%, aqueous defoamer 0.1%, hydroxyethyl cellulose 0.1%, metal reflective powder 0.55%, and surplus is deionized water; Described step (4) foundation excavation, build in build the concrete that adopts concrete match ratio by weight and be: water: cement: sand: particle diameter is 9.5mm rubble: particle diameter is the big stone of 1cm～2cm: particle diameter is 4.75mm rubble: water reducer is 1.64: 3.87: 7.74: 5.41: 1.55:2.68:5.12.
2. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that described step (4) foundation excavation, build middle key dimension length × wide × deeply for 355mm × 355mm × 410mm.
3. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that described step (4) foundation excavation, the slump building middle casting concrete control at 14～17cm.
4. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that described step (4) foundation excavation, build in build every layer concrete vibrating time and control at 1～1.5 minute.
5. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that described step (4) foundation excavation, build the moving interval of vibrating spear in middle casting process and control within the operating radius scope of 1.2 times.
6. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that described step (4) foundation excavation, the spacing built in middle casting process between vibrating spear and corrugated sheet control at 5～10cm.
7. the construction method of Dacroment steel highway barrier according to claim 6, it is characterised in that described step (4) foundation excavation, build vibrating spear in middle casting process and insert the degree of depth of lower-layer concrete 5～10cm.
8. the construction method of Dacroment steel highway barrier according to claim 1, it is characterised in that the buried depth of described step (5) column installation process central post is more than 37cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610006542.9A CN105672172B (en) | 2016-01-06 | 2016-01-06 | A kind of construction method of Dacroment steel highway barrier |
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| CN201610006542.9A CN105672172B (en) | 2016-01-06 | 2016-01-06 | A kind of construction method of Dacroment steel highway barrier |
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| CN105672172A true CN105672172A (en) | 2016-06-15 |
| CN105672172B CN105672172B (en) | 2017-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032772A1 (en) * | 2016-08-19 | 2018-02-22 | 深圳市亚泰国际建设股份有限公司 | Combined handrail and installation method |
| CN108708335A (en) * | 2018-06-26 | 2018-10-26 | 周焱春 | A kind of antitheft installation method of freeway guardrail |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032772A1 (en) * | 2016-08-19 | 2018-02-22 | 深圳市亚泰国际建设股份有限公司 | Combined handrail and installation method |
| CN108708335A (en) * | 2018-06-26 | 2018-10-26 | 周焱春 | A kind of antitheft installation method of freeway guardrail |
| CN108708335B (en) * | 2018-06-26 | 2021-07-30 | 陕西炳华建设工程有限公司 | Anti-theft installation method for expressway guardrail |
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| CN105672172B (en) | 2017-09-22 |
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Inventor after: Geng Lei Inventor after: Zhang Jingping Inventor before: Zhang Jingping Inventor before: Geng Lei Inventor before: Yang Xiusheng Inventor before: Cao Xianming Inventor before: Fang Shiming |
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Address after: No. 3188, Nanshou, Jizhou Road, Xishan Economic Development Zone, Weifang City, Shandong Province, 262513 Patentee after: Shandong Yuanda Transportation Technology Co.,Ltd. Address before: No. 3188, Nanshou, Jizhou Road, Xishan Economic Development Zone, Weifang City, Shandong Province, 262513 Patentee before: WEIFANG YUANDA METAL SURFACE TECHNOLOGY Co.,Ltd. |
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