CN102277871B - Composite material waist rail supporting device - Google Patents
Composite material waist rail supporting device Download PDFInfo
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- CN102277871B CN102277871B CN 201010208704 CN201010208704A CN102277871B CN 102277871 B CN102277871 B CN 102277871B CN 201010208704 CN201010208704 CN 201010208704 CN 201010208704 A CN201010208704 A CN 201010208704A CN 102277871 B CN102277871 B CN 102277871B
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- waist rail
- waist
- anchor pole
- web
- rail
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Abstract
The invention belongs to the technical field of building construction and relates to a waist rail supporting device made of a novel composite material. The waist rail supporting device is applied to foundation pit engineering; waist rails are recycled by using an auxiliary connecting member and are used for replacing the conventional reinforced concrete waist rail or section steel waist rail; the two ends of two symmetrical waist rail web plates with vertical structures are provided with double web plate waist rail flanges; the double web plate waist rail flanges and a waist rail web plate are integrated to form a transverse-H-shaped structure; columnar or tubular pole type anchor rods are inserted into the centers of upper and lower flanges in an up-down penetrating way; the circumferential sides of the waist rail web plate and the waist rail flanges at the joint between each waist rail and each anchor rod are coated with epoxy resin layers; the outer side of each epoxy resin layer is provided with a split reinforcing gasket; and a connecting member sleeve is arranged between two waist rails and used for connecting and reinforcing the waist rails. The waist rails made of composite materials have light dead weight and can be recycled, so that comprehensive economic benefit and environmental protection benefit are achieved, and the waist rail supporting device has low production cost and high popularization and application potentials.
Description
Technical field:
The invention belongs to technical field of building construction, relate to a kind of waist rail support protection device that uses advanced composite material (ACM) to make, be used for base pit engineering to the device that improves equipment of new material and new technology, by using attached connecting elements to realize recycling of waist rail, substitute traditional reinforced concrete waist rail or steel wale.
Background technology:
In building operations, the deep foundation pit support mode mainly contains piled anchor, soil nail wall etc. at present, and it is many that the common shortcoming of these methods is that steel expend, and resource can not reuse, and forever is retained in underground.For realizing the protection of resources sustainable development and urban environment, in pattern foundation pit supporting structure, explore the New Supporting materials and methods and prepare the target that waist rail is the industry effort always.Fibre reinforced composites (fiber reinforced polymer, be called for short FRP) compare the advantage such as have good endurance, specific strength is high, designability good, construction is convenient with steel with the traditional material concrete, obtained the extensive concern of civil engineering field.According to the classification that strengthens body, FRP can be divided into the types such as glass fibre reinforced composion (GFRP), carbon fibre reinforced composite (CFRP), aramid fiber enhancing based composites (AFRP).In the production technology of FRP, pultrusion molding process can be mass the product of arbitrary section form and is widely applied because its price is low.Similarly, glass fibre reinforced composion or title glass fiber reinforced plastic because of its relatively low cost, have obtained using the most widely in the building industry.The waist rail of using in foundation pit supporting construction or claim girt strip, its Main Function are to transmit horizontal force between space enclosing structure and the anchor pole and as the stressed platform of prestressed anchor stretch-draw, locking, mainly bear bending and shearing.Existing waist rail generally adopts the traditional materials such as shaped steel, concrete to make, and after foundation pit supporting project finishes, it is underground that the materials such as a large amount of shaped steel, concrete will forever be embedded in, and both cause the wasting of resources, form again environment pollution.Adopt the Lightweight high-strength composite material of reusable edible to make up waist rail, saving steel, protection of the environment reduce the use of on-the-spot large-scale hoisting machinery, construction safety, convenience; By improving technique, also will in foundation pit supporting project, realize detachable modular construction pattern, shorten construction period, reduce project cost.At present, in the base pit engineering practice at home and abroad, begun to occur by the trend of traditional material to the development of many performances composite material, and engineering practice has among a small circle been carried out in trial, be applied to soil nailing, anchor pole in the foundation pit stope support such as epoxy resin composite material as pull bar, composite material detachable panel etc., but not yet see the research report of the composite material waist rail that relevant the application relates to, also have no the Patents technology open.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists; seek to develop a kind of detachable composite material waist rail support protection device that recycles; after base pit engineering is finished using; composite material waist rail support protection device is disassembled; use in the next base pit engineering; repeatedly recycle, not only protection of the environment but also reduce construction costs.
To achieve these goals, the waist rail support protection device waist rail agent structure that the present invention relates to comprises two web waist rail edges of a wing, two web waist rail web, anchor pole, opposite opened reinforcement pad, epoxy resin layer, connecting elements or ground tackle and connecting elements sleeve; Two waist rail web two ends of symmetrical vertical structure laterally are shaped with two web waist rail edges of a wing, and two web waist rail edges of a wing and waist rail web integral type consist of " worker " word structure; The waist rail edge of a wing is divided into the upper and lower edge of a wing, center, the upper and lower edge of a wing up and down penetration type is shaped with pillar or pipe rod-type anchor pole, waist rail is scribbling epoxy resin layer with anchor pole junction waist rail web and waist rail edge of a wing week side, and outside epoxy resin layer, be shaped with opposite opened reinforcement pad, be used for power transmission and reinforcing between waist rail connecting elements or the ground tackle; Be shaped with the connecting elements sleeve between two waist rails, be used for connection and reinforcing between the waist rail; The percentage by weight of the composite material compositions that its waist rail main body is used is: unsaturated polyester resin 30%～32%, and alkali-free glass 65%～69%, 0～5% filler adopts conventional method preparation and is processed into the waist rail main body; The agent structure of pad and connecting elements sleeve composition waist rail is strengthened in two abdomens " worker " font cross section GFRP waist rail, the similar cross section of opposite opened; The Main Function of two web waist rails in pattern foundation pit supporting structure is to transmit horizontal force between envelope structure and the anchor pole and as the stressed platform of prestressed anchor stretch-draw, locking; Reinforcement pad in the prestressed anchor plays stressed support and stress diffusion, avoid the waist rail main component under the prestressing force effect, to destroy, the joint connection in site of prefabricated waist rail should be convenient, fast, do not affect the intensity performance of member and make connecting elements can dismantle, recycle; The waist rail section form of composite material is chosen two abdomen " worker " shaped sections structures, to improve resistance to overturning and the local stability of member, for connection and the installation of member are provided convenience; Opposite opened reinforcement pad is made with the 5mm Plate Welding, and opposite opened strengthens pad and all sides of waist rail form combining structure by epoxy bond; The sleeve cross section of connecting elements sleeve is similar with the waist rail cross section, and is long for 50cm, for 4mm steel plate integral solder is made; Adopt joint connection in site member sleeve need not hole, avoided the member stress to concentrate the local failure that produces; Adopt the connecting elements sleeve can obtain higher coupling stiffness and intensity, satisfy the instructions for use of waist rail; Waist rail and anchor pole junction are positioned at the point midway of waist rail, according to the specification of anchor pole in the upper bottom flange of waist rail central hole, so that anchor pole passes waist rail when installing.
When the present invention uses and installs, according to the height of the location positioning waist rail of anchor pole, opposite opened is strengthened pad becomes integral body with waist rail by epoxy bond; Anchor pole one end is passed opposite opened strengthen pad and waist rail, and fix with ground tackle; One end of waist rail is inserted in the connecting elements sleeve, the other end of connecting elements sleeve be connected waist rail and connect, finish the connection work of waist rail; Should make medial surface and the bank protection wall close contact of waist rail in the installation process, larger such as the slit, can carry out grouting treatment; Use at last ground tackle to carry out the tensioning fixation of anchor pole, make composite material waist rail be securely fixed in Po Bishang, guarantee the safe and effective of pattern foundation pit supporting structure; During dismounting, should carry out step by step according to basement main body construction progress, when the design strength of structure floor reached certain value, loosening ground tackle cut off the anchor bar steel twisted wire gradually, finishes the dismounting of waist rail.
The present invention compared with prior art has the following advantages: the one, and adopt the waist rail of Lightweight high-strength composite material from heavy and light, be convenient to the manual assembly operation, reduce the use of on-the-spot Large Construction lifting machine, construction safety is convenient; The 2nd, two web i shaped cross section shapes of composite material waist rail are reasonable, are better than the reinforced concrete waist rail that traditional on-spot injection casts or the steel wale that is welded to connect; The 3rd, special linkage has been realized recycling of waist rail so that waist rail can be dismantled; The 4th, composite material waist rail since its from heavy and light, can be recycled, can produce overall economic efficiency and environmental protection benefit, cost of production is low, applies potentiality large.
Description of drawings:
Fig. 1 is the waist rail that the present invention relates to and adopts opposite opened to strengthen the gasket construction principle schematic.
Fig. 2 is the device cross section structure principle schematic that the waist rail that the present invention relates to adopts the connecting elements sleeve to connect.
Fig. 3 is that the waist rail support protection device that the present invention relates to is faced the structural principle schematic diagram.
The specific embodiment:
Be described further below in conjunction with accompanying drawing and by embodiment.
Embodiment:
The agent structure of the present embodiment comprises two web waist rail edges of a wing 1, two web waist rail web 2, anchor pole 3, opposite opened reinforcement pad 4, epoxy resin layer 5, connecting elements or ground tackle 6 and connecting elements sleeve 7; Two waist rail web two ends of symmetrical vertical structure laterally are shaped with two web waist rail edges of a wing 1, and two web waist rails edge of a wing 1 consists of " worker " word structure with waist rail web integral type; The waist rail edge of a wing is divided into the upper and lower edge of a wing, center, the upper and lower edge of a wing up and down penetration type is shaped with pillar or pipe rod-type anchor pole 3, waist rail is scribbling epoxy resin layer 5 with anchor pole 3 junction waist rail webs 2 and the waist rail edge of a wing 1 all sides, and be shaped with opposite opened in epoxy resin layer 5 outsides and strengthen pad 4, be used for power transmission and reinforcing between waist rail connecting elements or the ground tackle 6; Be shaped with connecting elements sleeve 7 between two waist rails, be used for connection and reinforcing between the waist rail; The percentage by weight of the composite material compositions that its waist rail main body is used is: unsaturated polyester resin 30%～32%, and alkali-free glass 65%～69%, 0～5% filler adopts conventional method preparation and is processed into the waist rail main body; The agent structure of pad 4 and connecting elements sleeve 7 composition waist rails is strengthened in two abdomens " worker " font cross section GFRP waist rail, the similar cross section of opposite opened; The Main Function of two web waist rails in pattern foundation pit supporting structure is to transmit horizontal force between envelope structure and the anchor pole 3 and as the stressed platform of prestressed anchor 3 stretch-draw, locking; 4 stressed supports of reinforcement pad in the prestressed anchor 3 and stress diffusion, avoid the waist rail main component under the prestressing force effect, to destroy, the joint connection in site of prefabricated waist rail should be convenient, fast, do not affect the intensity performance of member and make connecting elements can dismantle, recycle; The waist rail section form of composite material is chosen two abdomen " worker " shaped sections structures, to improve resistance to overturning and the local stability of member, for connection and the installation of member are provided convenience; Opposite opened reinforcement pad 4 usefulness 5mm Plate Weldings are made, and opposite opened strengthens pad 4 and all sides of waist rail form combining structure by epoxy bond; The sleeve cross section of connecting elements sleeve 7 is similar with the waist rail cross section, and is long for 50cm, for 4mm steel plate integral solder is made; Adopt joint connection in site member sleeve 7 need not hole, avoided the member stress to concentrate the local failure that produces; Adopt connecting elements sleeve 7 can obtain higher coupling stiffness and intensity, satisfy the instructions for use of waist rail; Waist rail and anchor pole 3 junctions are positioned at the point midway of waist rail, according to the specification of anchor pole 3 in the upper bottom flange of waist rail central hole, so that anchor pole 3 passes waist rail when installing.
When the present embodiment was installed, according to the height of the location positioning waist rail of anchor pole 3, waist rail and anchor pole 3 junctions were positioned at the point midway of beam length; Anchor pole 3 one ends are passed opposite opened strengthen pad 4, waist rail and fixing with ground tackle 6; One end of fixing waist rail is inserted in the sleeve 7, and the other end of sleeve 7 connects the connection work of just finishing one section waist rail with an end that is connected waist rail; Should make medial surface and the bank protection wall close contact of waist rail in the installation process, larger such as the slit, can carry out grouting treatment; Use at last ground tackle 6 to carry out the tensioning fixation of anchor pole 3, make composite material waist rail be securely fixed in Po Bishang, guarantee the safe and effective of pattern foundation pit supporting structure.During dismounting, should carry out step by step according to basement main body construction progress, when the design strength of structure floor reached some strength, loosening ground tackle 6 cut off the anchor bar steel twisted wire gradually, finishes the dismounting of waist rail.
Claims (2)
1. composite material waist rail support protection device, agent structure comprises two web waist rail edges of a wing, two web waist rail web, anchor pole, opposite opened reinforcement pad, epoxy resin layer, connecting elements and connecting elements sleeve, two waist rail web two ends that it is characterized in that symmetrical vertical structure laterally are shaped with two web waist rail edges of a wing, and two web waist rail edges of a wing and waist rail web integral type consist of " worker " word structure; The waist rail edge of a wing is divided into the upper and lower edge of a wing, center, the upper and lower edge of a wing up and down penetration type is shaped with pillar or pipe rod-type anchor pole, waist rail is scribbling epoxy resin layer with anchor pole junction waist rail web and waist rail edge of a wing week side, and outside epoxy resin layer, be shaped with opposite opened reinforcement pad, be used for power transmission and reinforcing between the waist rail connecting elements; Be shaped with the connecting elements sleeve between two waist rails, be used for connection and reinforcing between the waist rail; The percentage by weight of the composite material compositions that its waist rail main body is used is: unsaturated polyester resin 30%～32%, and alkali-free glass 65%～69%, 0～5% is filler; Two abdomens " worker " font cross section GFRP waist rail, opposite opened are strengthened the agent structure of pad and connecting elements sleeve composition waist rail; Two web waist rails transmit horizontal force between envelope structure and the anchor pole and as the stressed platform of prestressed anchor stretch-draw, locking in pattern foundation pit supporting structure; Opposite opened in the prestressed anchor is strengthened pad and is played stressed support and stress diffusion, avoids the waist rail main component to destroy under the prestressing force effect; Opposite opened reinforcement pad is made with the 5mm Plate Welding, and opposite opened strengthens pad and all sides of waist rail form combining structure by epoxy bond; The sleeve cross section of connecting elements sleeve is identical with the waist rail cross section, and is long for 50cm, for 4mm steel plate integral solder is made; Waist rail and anchor pole junction are positioned at the point midway of waist rail, according to the specification of anchor pole in the upper bottom flange central hole of waist rail so that anchor pole passes waist rail.
2. composite material waist rail support protection device according to claim 1 is characterized in that the height according to the location positioning waist rail of anchor pole, opposite opened is strengthened pad become whole with waist rail by epoxy bond; Anchor pole one end passes opposite opened and strengthens pad and waist rail and fix with ground tackle; One end of waist rail is inserted in the connecting elements sleeve, the other end of connecting elements sleeve be connected waist rail and connect; The medial surface of waist rail and bank protection wall close contact; Carry out the tensioning fixation of anchor pole with ground tackle, make composite material waist rail be securely fixed in Po Bishang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010208704 CN102277871B (en) | 2010-06-11 | 2010-06-11 | Composite material waist rail supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010208704 CN102277871B (en) | 2010-06-11 | 2010-06-11 | Composite material waist rail supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102277871A CN102277871A (en) | 2011-12-14 |
| CN102277871B true CN102277871B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010208704 Expired - Fee Related CN102277871B (en) | 2010-06-11 | 2010-06-11 | Composite material waist rail supporting device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424405A (en) * | 2019-08-06 | 2019-11-08 | 中建一局集团建设发展有限公司 | A kind of soft clay area phreatic high foundation pit supporting construction and its construction method |
| CN115182360B (en) * | 2022-08-04 | 2023-08-18 | 中建八局第二建设有限公司 | Pile anchor waist beam supporting structure and supporting method |
| CN117184404B (en) * | 2023-11-07 | 2024-01-12 | 北京航空航天大学 | High-efficiency reinforced thin-wall tubular beam suitable for ultra-low wing-loaded aircraft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060100814A (en) * | 2005-03-18 | 2006-09-21 | 주식회사 준별에프알피산업 | Synthetic construction wall of a waterway, a canal and a method of the construction |
| CN2923824Y (en) * | 2006-07-20 | 2007-07-18 | 中国京冶建设工程承包公司 | Inlaid section-steel waist-beam |
| CN201125387Y (en) * | 2007-11-22 | 2008-10-01 | 赵慧丽 | Middle beam pad iron assembly in anchor rod construction |
-
2010
- 2010-06-11 CN CN 201010208704 patent/CN102277871B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060100814A (en) * | 2005-03-18 | 2006-09-21 | 주식회사 준별에프알피산업 | Synthetic construction wall of a waterway, a canal and a method of the construction |
| CN2923824Y (en) * | 2006-07-20 | 2007-07-18 | 中国京冶建设工程承包公司 | Inlaid section-steel waist-beam |
| CN201125387Y (en) * | 2007-11-22 | 2008-10-01 | 赵慧丽 | Middle beam pad iron assembly in anchor rod construction |
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| CN102277871A (en) | 2011-12-14 |
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