CN103334441B - Road slope protecting structure and construction method thereof - Google Patents
Road slope protecting structure and construction method thereof Download PDFInfo
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- CN103334441B CN103334441B CN201310311530.3A CN201310311530A CN103334441B CN 103334441 B CN103334441 B CN 103334441B CN 201310311530 A CN201310311530 A CN 201310311530A CN 103334441 B CN103334441 B CN 103334441B
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Abstract
The invention discloses a road slope protecting structure. The road slope protecting structure comprises an anchoring cable, an outer layer of FRP (Fiber Reinforce Plastic) frame grid beam template and an inner reinforcing steel bar concrete frame grid beam, wherein the outer layer of FRP frame grid beam template comprises a cross beam template which is horizontally arranged and a longitudinal beam template which is arranged along a slope in the height direction of the side slope; and the inner reinforcing steel bar concrete frame grid beam comprises reinforcing steel bar concrete cross beams and reinforcing steel bar concrete longitudinal beams which are respectively cast in the cross beam template and the longitudinal beam template. Both the reinforcing steel bar concrete cross beams and the reinforcing steel bar concrete longitudinal beams are wrapped in the outer layer of FRP frame grid beam template to form a combined structure of an FRP structure and a reinforcing steel bar concrete structure, so that the exposed areas of the reinforcing steel bar concrete cross beams and the reinforcing steel bar concrete longitudinal beams are effectively reduced, the cross beams and the longitudinal beams are effectively prevented from being cracked, the service life of the road slope protecting structure is prolonged, and meanwhile, the cost of a large number of steel templates or wood templates and brackets is saved. The invention also discloses a construction method of the road slope protecting structure.
Description
Technical field
The present invention relates to civil engineering highway technology field, particularly relate to a kind of highway slope protection structure and construction method thereof.
Background technology
Anchor cable sash beam is the slope protection structure form that High Side Slope of Highway extensively adopts at present, and the normal proping poured in place concrete method that adopts is constructed.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the anchor cable sash girder construction side schematic view of prior art, and Fig. 2 is the anchor cable sash beam facade arrangement diagram of prior art.Wherein sash beam comprises the crossbeam 01 of horizontal arrangement and the longeron 02 arranged along slope that tilts along slope height direction, and anchor cable 03 anchoring lower ends is in the rock stratum of described slope soil depths, and upper end stretch-draw anchor is on described sash beam concrete surface.Sash beam adopts reinforced concrete structure.The spacing of adjacent two crossbeams 01 and adjacent two longerons 02 generally adopts about 3 meters.
Because concrete structure in anchoringwire gridiron structure of the prior art is directly exposed in external environment, and the concrete be in external environment easily ftractures, and this can badly influence the application life of highway slope protection structure.
Summary of the invention
The object of this invention is to provide a kind of highway slope protection structure, avoid the directly exposed problem that concrete easily ftractures in external environment of the concrete structure in current anchoringwire gridiron structure, improve the application life of highway slope protection structure.
For solving above-mentioned prior art problem, highway slope protection structure anchor cable provided by the invention, outer FRP sash beam forms and inner reinforced concrete box beam, described outer FRP sash beam forms comprise horizontal arrangement beam template and along slope height direction along the longeron template that slope is arranged, described inner reinforced concrete box beam comprises the reinforced concrete beams and steel concrete longeron of building respectively in described beam template and described longeron template.
Preferably, above the beam template of described outer FRP sash beam forms, be also provided with green area casing, between described beam template and described green area casing, be also provided with greening retaining casing.
Preferably, described beam template and the described longeron template FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, described beam template and described longeron template intersect section, and the side on next-door neighbour side slope surface is provided with FRP opening box local connecting bottom board.
Preferably, also comprise the FRP articulamentum being adhered to described reinforced concrete beams and described steel concrete longeron upper surface, the two ends of the FRP articulamentum on described reinforced concrete beams and two blocks of side plates of described beam template are bonded as one, and the two ends of the FRP articulamentum on described steel concrete longeron and two blocks of side plates of described longeron template are bonded as one.
Preferably, the upper end of described anchor cable is through the intersection point of the axis of described beam template and longeron template and the concrete surface of stretch-draw anchor in described outer FRP sash beam forms, anchoring lower ends is in rock stratum, described slope soil depths, and the side slope surface contacted with described FRP sash beam forms is also provided with concrete leveling layer, and described concrete leveling layer is arranged at the anchor hole periphery of described anchor cable.
Preferably, described outer FRP sash beam forms comprises top FRP sash beam forms and bottom FRP sash beam forms, adjacent two beam templates in the FRP sash beam forms of described top are equal with the distance of adjacent two longeron templates, adjacent two beam templates in the FRP sash beam forms of described bottom are equal with the distance of adjacent two longeron templates, and the distance of adjacent two beam templates in the FRP sash beam forms of described bottom is greater than the distance of adjacent two beam templates in the FRP sash beam forms of described top.
Preferably, described outer FRP sash beam forms is split modular structure, and the position that described top FRP sash beam forms and described bottom FRP sash beam forms intersect is handing-over layer template, and described outer sash beam forms specifically comprises:
To form in the middle part of the side slope lower left corner, the bottom FRP component of bottom FRP sash beam forms, the side slope lower right corner, bottom FRP component, bottom side slope beam member, bottom side slope bottom on the left of FRP component, bottom side slope rail members, side slope middle level, bottom on the right side of FRP component, side slope middle level, bottom FRP component in the middle part of FRP component, side slope middle level, bottom;
On the left of the handing-over layer of formation handing-over layer template, on the right side of FRP component, handing-over layer, in the middle part of FRP component, handing-over layer, FRP component, handing-over layer connect longeron FRP component;
FRP component in the middle part of FRP component, upper slope top layer on the right side of FRP component, upper slope top layer on the left of FRP component, upper slope top layer in the middle part of FRP component, upper slope middle level on the right side of FRP component, upper slope middle level on the left of the upper slope middle level forming top FRP sash beam forms;
The end section that FRP component described in each is used for being connected with adjacent FRP component is provided with end junction plate, and side, described end junction plate next-door neighbour side slope surface is arranged, and is linked into an integrated entity by FRP plate and adhering with epoxy resin between FRP component described in each.
Preferably, described bottom FRP sash beam forms and described top FRP sash beam forms are 2/1-4/1 along the ratio of the extended distance on described slope height direction, and the sash inside that described bottom FRP sash beam forms is surrounded by described beam template and longeron template is provided with the Large space FRP grid be fixedly linked with the beam template and longeron template that surround sash, the sash inside that described top FRP sash beam forms is surrounded by described beam template and longeron template is provided with the Small Distance FRP grid be fixedly linked with the beam template and longeron template that surround sash.
Preferably, the concrete surface in described outer FRP sash beam forms is also provided with the sealing off and covering anchorage concrete for preventing described Anchor Cable Anchorage corrosion, and the concrete surface of described sealing off and covering anchorage is also pasted with one deck FRP woven roving.
Also disclose a kind of construction method of highway slope protection structure in the present invention simultaneously, comprise step:
1) split type method is adopted to make each component of outer FRP sash beam forms in factory, described FRP sash beam forms comprise horizontal arrangement beam template and along slope height direction along the longeron template that slope is arranged, and described beam template and the described longeron template FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, then by each component conveying to building site;
2) complete the anchoring construction of anchor cable lower end, and adopt concrete to complete the leveling construction on the side slope ground of the anchor cable hole periphery of anchor cable;
3) each component installaiton of produce in factory is become outer FRP sash beam forms, in described beam template and described longeron template, reinforcing bar is installed, and completes the concreting of crossbeam and longeron to concreting in described beam template and described longeron template.
4) after the concrete of the described crossbeam of having built and described longeron reaches intensity, one deck FRP articulamentum is pasted respectively at the upper surface of crossbeam and the upper surface of longeron with bonding agent, be bonded in the two ends of FRP articulamentum on crossbeam and the biside plate of beam template is bonded as one, the biside plate at the two ends and longeron template that are bonded in the FRP articulamentum on longeron is bonded as one;
5) reach after intensity until bonding agent, the prestressing force of anchor cable described in stretch-draw, the Suo Li of anchor cable 30% described in stretch-draw 3 days ages of concrete, the Suo Li of anchor cable 60% described in stretch-draw 6 days ages of concrete, when 9 to 10 days ages of concrete and intensity and modulus of elasticity all reach 80% of design load, the Suo Li of anchor cable 100% described in stretch-draw.
6) complete the sealing off and covering anchorage concrete construction of described anchor cable, paste one deck FRP waterproofing course at sealing off and covering anchorage concrete surface.
Preferably, green area casing is also provided with above the beam template of described outer FRP sash beam forms, greening retaining casing is also provided with between described beam template and described green area casing, described outer FRP sash beam forms comprises top FRP sash beam forms and bottom FRP sash beam forms, the position that described top FRP sash beam forms and described bottom FRP sash beam forms intersect is handing-over layer template
Described step 1) in specifically comprise:
Bottom FRP sash beam forms makes: to adopt in the middle part of the side slope lower left corner, Making mold bottom FRP component, the side slope lower right corner, bottom FRP component, bottom side slope beam member, bottom side slope bottom on the left of FRP component, bottom side slope rail members, side slope middle level, bottom on the right side of FRP component, side slope middle level, bottom FRP component in the middle part of FRP component, side slope middle level, bottom in factory;
Handing-over layer template construct: adopt FRP component on the left of Making mold handing-over layer in factory, join FRP component on the right side of layer, join FRP component in the middle part of layer, handing-over layer connects upper longitudinal FRP component;
Top FRP sash beam forms makes: to adopt on the left of Making mold upper slope middle level on the right side of FRP component, upper slope middle level in the middle part of FRP component, upper slope middle level on the left of FRP component, upper slope top layer on the right side of FRP component, upper slope top layer FRP component in the middle part of FRP component, upper slope top layer in factory;
Each component described is transported to building site;
Described step 3) in specifically comprise:
Large space FRP grid is laid in side slope bottom, on described side slope top, Small Distance FRP grid is set, plant-manufactured described FRP component is installed in layering from bottom to top, epoxy resin is adopted to be pasted onto by described FRP component on the leveling concrete at face place, anchor cable hole peripheral edge hillside fields, described anchor cable exit, be connected firmly by FRP plate between FRP component, described Small Distance FRP grid is fixedly connected with described longeron template with the beam template in its place sash, described Large space FRP grid is fixedly connected with described longeron template with the beam template in its place sash, in described beam template and described longeron template, reinforcing bar is installed, and to concreting in described beam template and described longeron template,
Described step 6) also comprise step afterwards:
7) fill construction of described green area casing is completed, green plants of planting.
Highway slope protection structure provided by the present invention, comprise anchor cable, outer FRP sash beam forms and inner reinforced concrete box beam, and outer FRP sash beam forms comprise horizontal arrangement beam template and along slope height direction along the longeron template that slope is arranged, inner reinforced concrete box beam comprises the reinforced concrete beams of building in beam template and builds the steel concrete longeron in longeron template.As can be seen here, it is inner that reinforced concrete beams and steel concrete longeron are all covered by outer FRP sash beam forms, this just effectively reduces reinforced concrete beams and the exposed area in external environment of longeron, thus effectively prevent the cracking of crossbeam and longeron, improve the application life of highway slope protection structure; Set up support with scene to compare with the mode of template, this kind of structure effectively can also reduce the input of template and support, because namely sash beam forms itself can be used as the formwork for placing of reinforced concrete beams and longeron, thus without the need to setting up template in addition, which saves a large amount of templates and portion support; And the appearance color being surrounded by the highway slope protection structure of outer FRP sash beam forms is outward consistent, enhances the aesthetic property of highway slope protection structure.
The construction method of highway slope protection structure disclosed in the present invention simultaneously, adopts the method that factory manufactures and in-site installation combines, construction can be made more efficient and convenient; And the Suo Li of anchor cable stretch-draw 30% in the 3 days age of concrete, the Suo Li of stretch-draw 60% in the 6 days age of concrete, when 9 to 10 days ages of concrete and intensity and modulus of elasticity all reach 80% of design load, the Suo Li of stretch-draw 100%, can ensure concrete frame lattice beam overall stressed evenly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the side structure schematic diagram of prior art anchor cable sash beam;
Fig. 2 is the facade arrangement diagram (the A-A schematic diagram of Fig. 1) of prior art anchor cable sash beam;
The side structure schematic diagram of the slope protection structure that Fig. 3 provides for the embodiment of the present invention;
The facade arrangement diagram (the B-B sectional view of Fig. 3) of the slope protection structure that Fig. 4 provides for the embodiment of the present invention;
The assembling schematic diagram of the FRP body structure of the slope protection structure that Fig. 5 provides for the embodiment of the present invention;
The side slope lower left corner, the bottom FRP element structure schematic diagram that Fig. 6 provides for the embodiment of the present invention;
The side slope lower right corner, the bottom FRP element structure schematic diagram that Fig. 7 provides for the embodiment of the present invention;
The bottom side slope beam member structural representation that Fig. 8 provides for the embodiment of the present invention;
FRP element structure schematic diagram in the middle part of the bottom side slope bottom that Fig. 9 provides for the embodiment of the present invention;
The bottom side slope rail members structural representation that Figure 10 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the left of the side slope middle level, bottom that Figure 11 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the right side of the side slope middle level, bottom that Figure 12 provides for the embodiment of the present invention;
FRP element structure schematic diagram in the middle part of the side slope middle level, bottom that Figure 13 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the left of the handing-over layer that Figure 14 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the right side of the handing-over layer that Figure 15 provides for the embodiment of the present invention;
FRP element structure schematic diagram in the middle part of the handing-over layer that Figure 16 provides for the embodiment of the present invention;
Figure 17 connects longeron FRP element structure schematic diagram for the handing-over layer that the embodiment of the present invention provides;
FRP element structure schematic diagram on the left of the upper slope middle level that Figure 18 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the right side of the upper slope middle level that Figure 19 provides for the embodiment of the present invention;
FRP element structure schematic diagram in the middle part of the upper slope middle level that Figure 20 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the left of the upper slope top layer that Figure 21 provides for the embodiment of the present invention;
FRP element structure schematic diagram on the right side of the upper slope top layer that Figure 22 provides for the embodiment of the present invention;
FRP element structure schematic diagram in the middle part of the upper slope top layer that Figure 23 provides for the embodiment of the present invention;
The bottom side slope beam member base arrangement schematic diagram that Figure 24 provides for the embodiment of the present invention;
FRP component negative structural representation in the middle part of the side slope middle level, bottom that Figure 25 provides for the embodiment of the present invention;
FRP component negative structural representation in the middle part of the bottom side slope bottom that Figure 26 provides for the embodiment of the present invention;
The side slope lower left corner, the bottom FRP component negative structural representation that Figure 27 provides for the embodiment of the present invention;
Figure 28 is the A-A sectional view of Figure 27;
Figure 29 is the B-B sectional view of Figure 27;
Figure 30 is the C-C sectional view of Figure 27;
Figure 31 is the D-D sectional view of Figure 27;
Figure 32 is the E-E sectional view of Figure 27;
Figure 33 is the F-F sectional view of Figure 27;
The slope protection structure Large space FRP grid facade arrangement diagram that Figure 34 provides for the embodiment of the present invention;
The slope protection structure Small Distance FRP grid facade arrangement diagram that Figure 35 provides for the embodiment of the present invention;
Facade arrangement diagram after the slope protection structure sash beam FRP Components installation that Figure 36 provides for the embodiment of the present invention;
Facade arrangement diagram after the slope protection structure sash beam concreting that Figure 37 provides for the embodiment of the present invention;
Figure 38 is the anchor cable facade arrangement diagram of slope protection structure of the present invention.
Wherein, 01 is crossbeam, and 02 is longeron, and 03 is anchor cable;
11 is beam template, and 12 is longeron template, and 2 is anchor cable, and 3 is green area casing, and 4 is greening retaining casing, and 5 is Large space FRP grid, and 6 is Small Distance FRP grid, and 7 is green plants, and 8 is FRP opening box local connecting bottom board, and 9 is end junction plate;
101 is the side slope lower left corner, bottom FRP component, 102 is the side slope lower right corner, bottom FRP component, 103 is bottom side slope beam member, 104 is FRP component in the middle part of the side slope bottom of bottom, 105 is bottom side slope rail members, 106 is FRP component on the left of side slope middle level, bottom, 107 is FRP component on the right side of side slope middle level, bottom, 108 is FRP component in the middle part of side slope middle level, bottom, 109 is FRP component on the left of handing-over layer, 110 is FRP component on the right side of handing-over layer, 111 is FRP component in the middle part of handing-over layer, 112 connect longeron FRP component for joining layer, 113 is FRP component on the left of upper slope middle level, 114 is FRP component on the right side of upper slope middle level, 115 is FRP component in the middle part of upper slope middle level, 116 is FRP component on the left of upper slope top layer, 117 is FRP component on the right side of upper slope top layer, 118 is FRP component in the middle part of upper slope top layer.
Detailed description of the invention
The object of this invention is to provide a kind of highway slope protection structure, the reinforced concrete beams in this highway slope protection structure and the outside of steel concrete longeron are coated with FRP sash beam forms, exposed at the crossbeam in the external world and the cracking of longeron to avoid.The present invention also discloses a kind of construction method of above-mentioned highway slope protection structure.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 3-38, the slope protection structure that the embodiment of the present invention provides, comprise the inner concrete sash beam and outer FRP sash beam forms that form slope protection structure, its ectomesoderm FRP sash beam forms comprise horizontal arrangement beam template 11 and along slope height direction along the longeron template 12 that slope is arranged, inner reinforced concrete box beam comprises crossbeam and longeron, its middle cross beam builds the reinforced concrete beams in beam template 11, and longeron is the steel concrete longeron of building in longeron template 12.
As can be seen here, it is inner that reinforced concrete beams and steel concrete longeron are all covered by outer FRP sash beam forms, this just effectively reduces reinforced concrete beams and the exposed area in external environment of longeron, thus effectively prevent the cracking of crossbeam and longeron, improve the application life of highway slope protection structure; Set up support with scene to compare with the mode of template, this kind of structure effectively can also reduce the input of template and support, because namely sash beam forms itself can be used as the formwork for placing of reinforced concrete beams and longeron, thus without the need to setting up template in addition, compared with prior art, which saves a large amount of steel forms and wooden form and portion support; And the appearance color being surrounded by the highway slope protection structure of outer FRP sash beam forms is outward consistent, enhances the aesthetic property of highway slope protection structure.
In order to optimize the technical scheme in above-described embodiment further, preferably above the beam template 11 of outer sash beam forms, green area casing 3 is also provided with in the present embodiment, greening retaining casing 4 is also provided with between beam template 11 and green area casing 3, be provided with the water inlet and delivery port that are communicated with drainage system with the water supply of highway in certain greening retaining casing 4, and the retaining of afforesting in retaining casing 4 is for surviving for the green plants 7 of cultivating in green area casing 3.
Concrete, the top board of greening retaining casing 4 is provided with multiple opening, the soil bottom of planting of the green plants 7 of cultivation in green area casing 3 is provided with one deck rubble french drain, geotextiles is surrounded by outside rubble french drain, the opening that geotextiles is arranged through greening retaining casing 4 top board, be communicated with the water body in greening retaining casing 4, for the native slowly-releasing of planting of the green plants 7 of cultivation in green area casing 3 supplies water.
In the highway slope protection structure provided in the present embodiment, beam template 11 and the longeron template 12 FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, certainly, two blocks of side plates are FRP plate, in order to strengthen the integrated connection intensity of this outer FRP sash beam forms, the section that beam template 11 and longeron template 12 intersect, the side on next-door neighbour side slope surface is provided with FRP opening box local connecting bottom board 8, as shown in Figure 25,26 and 27.And in beam template 11 and longeron template 12, reinforcing bar is set, like this, be filled in the composite construction that concrete and rebar in beam template 11 and longeron template 12 and template just define steel concrete and FRP plate, this greatly enhances the intensity of inner reinforced concrete box beam.
Further, the highway slope protection structure provided in the present embodiment also comprises the FRP articulamentum being bonded in reinforced concrete beams and steel concrete longeron upper surface, and two blocks of side plates of the two ends of the FRP articulamentum on reinforced concrete beams and beam template are bonded as one, the two ends of the FRP articulamentum on steel concrete longeron and two blocks of side plates of longeron template are bonded as one, the upper surface that can be the naked reinforced concrete beams that is exposed on the external and longeron is like this coated by FRP articulamentum, and be connected as a single entity with beam template and longeron template, its structure is more stable.
FRP articulamentum in above-described embodiment specifically comprises the FRP woven roving being positioned at intermediate layer, and the FRP being adhered to FRP woven roving upper surface and soffit is respectively short cuts felt.
The upper end of anchor cable 2 is through the intersection point of the outer beam template 11 of FRP sash beam forms and the axis of longeron template 12 and the concrete surface of stretch-draw anchor in outer FRP sash beam forms, anchoring lower ends is in the rock stratum, depths of slope soil, in order to further optimisation technique scheme, the side slope surface contacted with FRP sash beam forms in the present embodiment is also provided with concrete leveling layer, certainly, concrete leveling layer should be arranged on the anchor hole periphery of anchor cable 2.
More stable in order to ensure whole highway slope protection structure, the spacing increase also according to 2.5 to 3.5 meters between the intersection point of the axis of beam template and longeron template in the present embodiment arranges anchor cable.
The geological condition of general side slope upper and lower is different, and comparatively generally the soil layer on side slope top is comparatively loose, the soil layer of bottom is comparatively closely knit, thus it is irrational in highway slope protection structure, the spacing between two of arbitrary neighborhood crossbeams being set to spacing between two of arbitrary neighborhood longerons equal, this can cause highway slope protection structure economical not, the wasting of resources is more, for this reason, outer FRP sash beam forms in the highway slope protection structure provided in the present embodiment comprises top FRP sash beam forms and bottom FRP sash beam forms, and adjacent two beam templates 11 in the FRP sash beam forms of top are equal with the distance of adjacent two longeron templates 12, adjacent two beam templates 11 in the FRP sash beam forms of bottom are equal with the distance of adjacent two longeron templates 12, and the distance of adjacent two beam templates 11 in the FRP sash beam forms of bottom is greater than the distance of adjacent two beam templates 11 in the FRP sash beam forms of described top.
As shown in Fig. 4, Figure 36 and Figure 37, the sash of FRP sash beam forms bottom formed like this is greater than the sash on top, because the soil layer of side slope bottom is comparatively closely knit, thus the FRP sash beam forms of larger sash can be adopted, and the soil layer on side slope top is comparatively loose, thus the FRP sash beam forms adopting less sash is applicable to, concreting in the beam template 11 and longeron template 12 of FRP sash beam forms respectively, makes it form the combining structure of outer FRP sash beam forms as shown in Figure 37 and internal layer reinforced concrete box beam.
It should be noted that, the highway slope protection structure that the embodiment of the present invention provides, the beam template 11 of bottom FRP sash beam forms and longeron template 12 all can adopt the FRP opening casing of high 40 centimetres wide 40 centimetres, and the beam template 11 of top FRP sash beam forms and longeron template 12 can adopt the FRP opening casing of high 20 centimetres wide 20 centimetres.Accordingly, beam template 11 in the FRP sash beam forms of top and the crossing section of longeron template 12, the FRP opening box local connecting bottom board 8 that the side on next-door neighbour side slope surface is arranged is of a size of long 40 centimetres wide 40 centimetres, beam template 11 in the FRP sash beam forms of bottom and the crossing section of longeron template 12, the FRP opening box local connecting bottom board 8 that the side on next-door neighbour side slope surface is arranged is of a size of long 20 centimetres wide 20 centimetres, and the side plate wall thickness of FRP opening casing can adopt 5 millimeters.Certainly, also other sizes can be adopted as required.Beam template 11 is with to be provided with reinforcing bar in longeron template 12 consistent with prior art, and case inner stuffing is that concrete is consistent with prior art.Wherein the height of FRP opening casing is that FRP opening casing edge is perpendicular to the size on the direction of side slope.
It should be noted that, the highway slope protection structure that the embodiment of the present invention provides, the size of the Large space sash of bottom FRP sash beam forms can be laterally 9 meters and longitudinally 9 meters simultaneously.The size of the Small Distance sash of top FRP sash beam forms can be horizontal 3 meters of longitudinal directions 3 meters.Certainly, can also adopt other sizes as required, the longitudinal direction wherein mentioned in this enforcement is parallel with side slope, and the direction consistent with slope height, be laterally parallel with side slope, and the direction vertical with slope height.
Green area casing 3 simultaneously in the FRP sash beam forms of bottom and greening retaining casing 4 can be all wide 40 centimetres high 40 centimetres.Green area casing 3 in the FRP sash beam forms of top and greening retaining casing 4 can be all wide 40 centimetres high 20 centimetres.Height is consistent with FRP sash beam forms.Certainly, also other sizes can be adopted as required.Certainly, in the present embodiment, the height of green area casing 3 and greening retaining casing 4 is green area casing 3 and greening retaining casing 4 along perpendicular to the size on the direction of side slope.
For the convenience of producing and in transport, the outer FRP sash beam forms in the present embodiment is split modular structure, and the position that top FRP sash beam forms and bottom FRP sash beam forms intersect is handing-over layer template, and this outer FRP sash beam forms specifically comprises:
To form in the middle part of the side slope lower left corner, the bottom FRP component 101 of bottom FRP sash beam forms, the side slope lower right corner, bottom FRP component 102, bottom side slope beam member 103, bottom side slope bottom on the left of FRP component 104, bottom side slope rail members 105, side slope middle level, bottom on the right side of FRP component 106, side slope middle level, bottom FRP component 108 in the middle part of FRP component 107, side slope middle level, bottom;
On the left of the handing-over layer of formation handing-over layer template, on the right side of FRP component 109, handing-over layer, in the middle part of FRP component 110, handing-over layer, FRP component 111, handing-over layer connect longeron FRP component 112;
FRP component 118 in the middle part of FRP component 117, upper slope top layer on the right side of FRP component 116, upper slope top layer on the left of FRP component 115, upper slope top layer in the middle part of FRP component 114, upper slope middle level on the right side of FRP component 113, upper slope middle level on the left of the upper slope middle level forming top FRP sash beam forms;
The end section that FRP component described in each is used for being connected with adjacent FRP component is provided with end junction plate 9, described end junction plate 9 is close to side, side slope surface and arranges, and linked into an integrated entity by FRP plate and adhering with epoxy resin between FRP component described in each, wherein FRP plate is for bonding with the end junction plate 9 on adjacent two FRP components respectively, bonding employing epoxide-resin glue realizes, thus is connected in one by adjacent two FRP components.
The highway slope protection structure that the embodiment of the present invention provides, described beam template 11, longeron template 12, green area casing 3 and greening retaining casing 4 are overall FRP multicell body structure, wherein afforesting retaining casing 4 is case of remaining silent, all the other are opening box, wherein the opening direction of beam template 11 and longeron template 12 is the direction perpendicular to side slope surface, the opening direction of green area casing 3 and side slope plane parallel, and opening is positioned at the top of green area casing 3.
It should be noted that, the highway slope protection structure that the embodiment of the present invention provides, the size connecing crossbeam FRP component when the spacing adjustment of sash beam by adjusting FRP beam member, FRP rail members and handing-over layer can realize the adjustment of the spacing of sash beam.
Also it should be noted that, the highway slope protection structure that the embodiment of the present invention provides, the end section of each FRP component, the end junction plate 9 that the direction on next-door neighbour side slope surface is arranged is of a size of 20 centimetres wide, certainly, also can adopt other sizes as required.
Bottom FRP sash beam forms and top FRP sash beam forms are 2/1-4/1 along the ratio of the extended distance on described slope height direction, preferably 2/1, and the sash inside that bottom FRP sash beam forms is surrounded by beam template 11 and longeron template 12 is provided with Large space FRP grid 5, the sash inside that top FRP sash beam forms is surrounded by beam template 11 and longeron template 12 is provided with Small Distance FRP grid 6, and Large space FRP grid 5 is all fixedly connected with longeron template 12 with the beam template 11 in the sash at himself place with Small Distance FRP grid 6.
In order to further prioritization scheme, on the beam template 11 of bottom FRP sash beam forms and the longeron template 12 of the left and right sides, be all equipped with anchor cable in the present embodiment and fix whole highway slope protection structure, concrete, beam template 11 and longeron template 12 position crossing with Large space FRP grid 5 are all equipped with anchor cable, as shown in Figure 38.
It should be noted that, the highway slope protection structure that the embodiment of the present invention provides, the size of mesh opening of Large space FRP grid 5 can adopt long 100 centimetres wide 100 centimetres, and the size of mesh opening of Small Distance FRP grid 6 can adopt long 5 mm wide 5 millimeters.Certainly, also other sizes can be adopted as required.
The highway slope protection structure that the embodiment of the present invention provides, the sealing off and covering anchorage concrete surface of the ground tackle of anchor cable 2 is arranged pastes one deck FRP woven roving, and FRP woven roving both side surface is arranged pastes that one deck FRP is short cuts felt, forms the FRP waterproofing course that thickness is 3 millimeters.
Described FRP is good anti-cracking waterproof material.Described FRP is Fiber Reinforced Polymer english abbreviation, i.e. fibre reinforced composites.During fiber employing glass fiber, fibre reinforced composites are called GFRP (often claiming glass fiber reinforced plastic), hereinafter referred to as FRP.Glass fiber about tensile strength 1000MPa, epoxy resin about tensile strength 60MPa, forming GFRP structural strength after glass fiber and epoxy resin combine can reach about 300MPa, and the intensity of steel work is close.GFRP less expensive, construction plasticity is good, is that concrete structure improves the more suitable sandwich of anti-cracking waterproof performance.The slope protection structure that the embodiment of the present invention provides adopts GFRP to improve stress performance and the cracking resistance of reinforced concrete box beam.
The main beneficial effect of highway slope protection structure that the embodiment of the present invention provides is:
Sash beam between side slope bottom (i.e. bottom FRP sash beam forms region) adopts greatly, side slope top (i.e. top FRP sash beam forms region) adopts Small Distance sash beam, has both met stressed needs, and can save cost again; Sash beam adopts outsourcing FRP structure, can save a large amount of templates, can save portion support, and appearance color is consistent simultaneously; And outsourcing FRP structure improves stress performance and the cracking resistance of steel concrete; Side slope ground, anchor cable exit arranges concrete leveling layer, and FRP sash beam forms is pasted onto on described concrete, improves working security; The greening casing arranged can beautify side slope environment, and the greening retaining casing simultaneously arranged can retaining slowly-releasing, exempts from maintenance; Side slope top laying Large space FRP grid and side slope bottom are provided with Small Distance FRP grid and can prevent falling rocks and partial collapse.
The construction method of the slope protection structure that the embodiment of the present invention provides, construction sequence is as follows:
The first step: adopt split type method to make each component of outer FRP sash beam forms in factory, described FRP sash beam forms comprise horizontal arrangement beam template 11 and along slope height direction along the longeron template 12 that slope is arranged, and beam template and the longeron template FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, then by each component conveying to building site;
Second step: the anchoring construction completing anchor cable 2 lower end, and adopt concrete to complete the leveling construction on the side slope ground of the anchor cable hole periphery of anchor cable 2;
3rd step: each component installaiton of produce in factory is become outer FRP sash beam forms, in described beam template 11 and described longeron template 12, reinforcing bar is installed, and completes the concreting of crossbeam and longeron to concreting in described beam template 11 and described longeron template 12;
4th step: after the concrete of the described crossbeam of having built and described longeron reaches intensity, one deck FRP articulamentum is pasted respectively at the upper surface of crossbeam and the upper surface of longeron with bonding agent, two blocks of side plates at the two ends and beam template that are bonded in the FRP articulamentum on crossbeam are bonded as one, and two blocks of side plates at the two ends and longeron template that are bonded in the FRP articulamentum on longeron are bonded as one;
5th step, reach after intensity until bonding agent, the prestressing force of stretch-draw anchor 2, the age of concrete 3 days stretch-draw anchors 30% Suo Li, the age of concrete 6 days stretch-draw anchors 60% Suo Li, when 9 to 10 days ages of concrete and intensity and modulus of elasticity all reach 80% of design load, the Suo Li of stretch-draw anchor 100%.
6th step: the sealing off and covering anchorage concrete construction completing described anchor cable 2, pastes one deck FRP waterproofing course at sealing off and covering anchorage concrete surface, and this waterproofing course body is that upper and lower surface is all pasted with the short FRP woven roving cutting felt of FRP.
More preferably, beam template 11 top of outer FRP sash beam forms is also provided with green area casing 3, greening retaining casing 4 is also provided with between beam template 11 and green area casing 3, outer FRP sash beam forms comprises top FRP sash beam forms and bottom FRP sash beam forms, the position that top FRP sash beam forms and bottom FRP sash beam forms intersect is handing-over layer template
And specifically comprise in the first step:
Bottom FRP sash beam forms makes: to adopt in the middle part of the side slope lower left corner, Making mold bottom FRP component 101, the side slope lower right corner, bottom FRP component 102, bottom side slope beam member 103, bottom side slope bottom on the left of FRP component 104, bottom side slope rail members 105, side slope middle level, bottom on the right side of FRP component 106, side slope middle level, bottom FRP component 108 in the middle part of FRP component 107, side slope middle level, bottom in factory;
Handing-over layer template construct: adopt FRP component 109 on the left of Making mold handing-over layer in factory, join FRP component 110 on the right side of layer, join FRP component 111 in the middle part of layer, handing-over layer connects upper longitudinal FRP component 112;
Top FRP sash beam forms makes: to adopt on the left of Making mold upper slope middle level on the right side of FRP component 113, upper slope middle level in the middle part of FRP component 114, upper slope middle level on the left of FRP component 115, upper slope top layer on the right side of FRP component 116, upper slope top layer FRP component 118 in the middle part of FRP component 117, upper slope top layer in factory;
Each component described is transported to building site;
Specifically comprise in 3rd step:
Large space FRP grid 5 is laid in side slope bottom, on described side slope top, Small Distance FRP grid 6 is set, plant-manufactured described FRP component is installed in layering from bottom to top, epoxy resin is adopted to be pasted onto by described FRP component on the leveling concrete at side slope ground place, described anchor cable 2 exit, be connected firmly by FRP plate between component, and Large space FRP grid 5 is all fixedly connected with longeron template 12 with the beam template 11 in the sash at himself place with Small Distance FRP grid 6, in described beam template 11 and described longeron template 12, reinforcing bar is installed, and to concreting in described beam template 11 and described longeron template 12,
Also comprise after the 6th step:
7th step: the fill construction completing described green area casing 3, green plants 7 of planting.
The main beneficial effect of construction method of the highway slope protection structure that the embodiment of the present invention provides is:
Adopt the method that factory manufactures and in-site installation combines, quick construction can be realized convenient; The Suo Li of anchor cable stretch-draw 30% in the 3 days age of concrete, the Suo Li of stretch-draw 60% in the 6 days age of concrete, when 9 to 10 days ages of concrete and intensity and modulus of elasticity all reach 80% of design load, the Suo Li of stretch-draw 100%, avoiding problems the situation of the overall discontinuity of sash beam that the disposable stretch-draw of prior art stream line causes to 100%, can ensure sash beam overall stressed evenly.
In this manual, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a highway slope protection structure, it is characterized in that, comprise anchor cable (2), outer FRP sash beam forms and inner reinforced concrete box beam, described outer FRP sash beam forms comprise horizontal arrangement beam template (11) and along slope height direction along the longeron template (12) that slope is arranged, described inner reinforced concrete box beam comprises the reinforced concrete beams and steel concrete longeron of building respectively in described beam template (11) and described longeron template (12);
Described outer FRP sash beam forms comprises top FRP sash beam forms and bottom FRP sash beam forms, adjacent two beam templates (11) in the FRP sash beam forms of described top are equal with the distance of adjacent two longeron templates (12), adjacent two beam templates (11) in the FRP sash beam forms of described bottom are equal with the distance of adjacent two longeron templates (12), and the distance of adjacent two beam templates (11) in the FRP sash beam forms of described bottom is greater than the distance of adjacent two beam templates (11) in the FRP sash beam forms of described top,
Described bottom FRP sash beam forms and described top FRP sash beam forms are 2/1-4/1 along the ratio of the extended distance on described slope height direction, and the sash inside that described bottom FRP sash beam forms is surrounded by described beam template (11) and longeron template (12) is provided with the Large space FRP grid (5) be fixedly linked with the beam template surrounding sash (11) and longeron template (12), the sash inside that described top FRP sash beam forms is surrounded by described beam template (11) and longeron template (12) is provided with the Small Distance FRP grid (6) be fixedly linked with the beam template surrounding sash (11) and longeron template (12).
2. highway slope protection structure according to claim 1, it is characterized in that, beam template (11) top of described outer FRP sash beam forms is also provided with green area casing (3), is also provided with greening retaining casing (4) between described beam template (11) and described green area casing (3).
3. highway slope protection structure according to claim 1, it is characterized in that, described beam template (11) and described longeron template (12) the FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, the side that described beam template (11) and described longeron template (12) intersect section next-door neighbour side slope surface is provided with FRP opening box local connecting bottom board (8).
4. highway slope protection structure according to claim 3, it is characterized in that, also comprise the FRP articulamentum being adhered to described reinforced concrete beams and described steel concrete longeron upper surface, the two ends of the FRP articulamentum on described reinforced concrete beams and two blocks of side plates of described beam template (11) are bonded as one, and the two ends of the FRP articulamentum on described steel concrete longeron and two blocks of side plates of described longeron template (12) are bonded as one.
5. highway slope protection structure according to claim 1, it is characterized in that, the upper end of described anchor cable (2) is through the intersection point of the axis of described beam template (11) and longeron template (12) and the concrete surface of stretch-draw anchor in described outer FRP sash beam forms, anchoring lower ends is in rock stratum, described slope soil depths, and the side slope surface contacted with described FRP sash beam forms is also provided with concrete leveling layer, and described concrete leveling layer is arranged at the anchor hole periphery of described anchor cable (2).
6. highway slope protection structure according to claim 1, it is characterized in that, described outer FRP sash beam forms is split modular structure, the position that described top FRP sash beam forms and described bottom FRP sash beam forms intersect is handing-over layer template, and described outer FRP sash beam forms specifically comprises:
To form in the middle part of the side slope lower left corner, bottom FRP component (101) of bottom FRP sash beam forms, the side slope lower right corner, bottom FRP component (102), bottom side slope beam member (103), bottom side slope bottom on the left of FRP component (104), bottom side slope rail members (105), side slope middle level, bottom on the right side of FRP component (106), side slope middle level, bottom FRP component (108) in the middle part of FRP component (107), side slope middle level, bottom;
On the left of the handing-over layer of formation handing-over layer template, on the right side of FRP component (109), handing-over layer, in the middle part of FRP component (110), handing-over layer, FRP component (111), handing-over layer connect longeron FRP component (112);
FRP component (118) in the middle part of FRP component (117), upper slope top layer on the right side of FRP component (116), upper slope top layer on the left of FRP component (115), upper slope top layer in the middle part of FRP component (114), upper slope middle level on the right side of FRP component (113), upper slope middle level on the left of the upper slope middle level forming top FRP sash beam forms;
The end section that FRP component described in each is used for being connected with adjacent FRP component is provided with end junction plate (9), side, next-door neighbour's side slope surface, described end junction plate (9) is arranged, and is linked into an integrated entity by FRP plate and adhering with epoxy resin between FRP component described in each.
7. highway slope protection structure according to claim 5, it is characterized in that, concrete surface in described outer FRP sash beam forms is also provided with the sealing off and covering anchorage concrete for preventing described Anchor Cable Anchorage corrosion, and the concrete surface of described sealing off and covering anchorage is also pasted with FRP waterproofing course.
8. a construction method for highway slope protection structure, comprises step:
1) split type method is adopted to make each component of outer FRP sash beam forms in factory, described FRP sash beam forms comprise horizontal arrangement beam template (11) and along slope height direction along the longeron template (12) that slope is arranged, and described beam template (11) and described longeron template (12) the FRP opening casing of the equal opening in top and bottom all for being made up of two blocks of side plates, then by each component conveying to building site;
2) complete the anchoring construction of anchor cable (2) lower end, and adopt concrete to complete the leveling construction on the side slope ground of the anchor cable hole periphery of anchor cable (2);
3) each component installaiton of produce in factory is become outer FRP sash beam forms, in described beam template (11) and described longeron template (12), reinforcing bar is installed, and completes the concreting of crossbeam and longeron to described beam template (11) and described longeron template (12) interior concreting;
4) after the concrete of the described crossbeam of having built and described longeron reaches intensity, one deck FRP articulamentum is pasted respectively at the upper surface of crossbeam and the upper surface of longeron with bonding agent, two blocks of side plates at the two ends and beam template (11) that are bonded in the FRP articulamentum on crossbeam are bonded as one, and two blocks of side plates at the two ends and longeron template (12) that are bonded in the FRP articulamentum on longeron are bonded as one;
5) reach after intensity until bonding agent, the prestressing force of anchor cable described in stretch-draw (2), the Suo Li of anchor cable (2) 30% described in stretch-draw 3 days ages of concrete, the Suo Li of anchor cable (2) 60% described in stretch-draw 6 days ages of concrete, when 9 to 10 days ages of concrete and intensity and modulus of elasticity all reach 80% of design load, the Suo Li of anchor cable (2) 100% described in stretch-draw;
6) complete the sealing off and covering anchorage concrete construction of described anchor cable (2), paste one deck FRP waterproofing course at sealing off and covering anchorage concrete surface;
Beam template (11) top of described outer FRP sash beam forms is also provided with green area casing (3), greening retaining casing (4) is also provided with between described beam template (11) and described green area casing (3), described outer FRP sash beam forms comprises top FRP sash beam forms and bottom FRP sash beam forms, the position that described top FRP sash beam forms and described bottom FRP sash beam forms intersect is handing-over layer template
Described step 1) in specifically comprise:
Bottom FRP sash beam forms makes: to adopt in the middle part of the side slope lower left corner, Making mold bottom FRP component (101), the side slope lower right corner, bottom FRP component (102), bottom side slope beam member (103), bottom side slope bottom on the left of FRP component (104), bottom side slope rail members (105), side slope middle level, bottom on the right side of FRP component (106), side slope middle level, bottom FRP component (108) in the middle part of FRP component (107), side slope middle level, bottom in factory;
Handing-over layer template construct: adopt FRP component (109) on the left of Making mold handing-over layer in factory, join FRP component (110) on the right side of layer, join FRP component (111) in the middle part of layer, handing-over layer connects longeron FRP component (112);
Top FRP sash beam forms makes: to adopt on the left of Making mold upper slope middle level on the right side of FRP component (113), upper slope middle level in the middle part of FRP component (114), upper slope middle level on the left of FRP component (115), upper slope top layer on the right side of FRP component (116), upper slope top layer FRP component (118) in the middle part of FRP component (117), upper slope top layer in factory;
Each component described is transported to building site;
Described step 3) in specifically comprise:
Large space FRP grid (5) is laid in side slope bottom, on described side slope top, Small Distance FRP grid (6) is set, plant-manufactured described FRP component is installed in layering from bottom to top, epoxy resin is adopted to be pasted onto by described FRP component on the leveling concrete at face place, anchor cable hole peripheral edge hillside fields, described anchor cable (2) exit, be connected firmly by FRP plate between FRP component, described Small Distance FRP grid (6) is fixedly connected with described longeron template (12) with the beam template (11) in its place sash, described Large space FRP grid (5) is fixedly connected with described longeron template (12) with the beam template (11) in its place sash, in described beam template (11) and described longeron template (12), reinforcing bar is installed, and to described beam template (11) and described longeron template (12) interior concreting,
Described step 6) also comprise step afterwards:
7) fill construction of described green area casing (3) is completed, green plants of planting (7).
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| CN201310311530.3A CN103334441B (en) | 2013-07-23 | 2013-07-23 | Road slope protecting structure and construction method thereof |
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| CN103628489B (en) * | 2013-12-05 | 2015-08-12 | 长沙理工大学 | Highway side slope reinforced structure |
| CN105804095B (en) * | 2016-03-15 | 2018-03-20 | 云南省建设投资控股集团有限公司 | A kind of method using prefabricated mesh beam slope supported |
| CN105951852B (en) * | 2016-06-12 | 2018-05-11 | 中国十七冶集团有限公司 | A kind of adjustable formwork and construction method of the beam concrete construction of high slope sash |
| CN108203985B (en) * | 2018-02-26 | 2023-11-21 | 北京方圆恒基岩土工程技术有限公司 | Prestressed soil nail assembled supporting structure and construction method thereof |
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| CN201610546U (en) * | 2010-01-07 | 2010-10-20 | 贵州省交通规划勘察设计研究院 | Prestress anchoring frame plat |
| CN102704623A (en) * | 2012-06-12 | 2012-10-03 | 大连理工大学 | Combined FRP(Fiber Reinforced Plastic)-self prestressed concrete structure |
| CN103205976A (en) * | 2013-04-26 | 2013-07-17 | 西南交通大学 | Multistage frame beam slope protection structure with self-adjustable slope body pressure |
| CN203393729U (en) * | 2013-07-23 | 2014-01-15 | 重庆交通大学 | Road slope protection structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08218386A (en) * | 1995-02-15 | 1996-08-27 | Kazuaki Tsuchimoto | Construction method for restraining slope |
| JP2001348881A (en) * | 2000-06-05 | 2001-12-21 | Toko Corp | Slope frame structure, slope frame construction method and frame inside greening method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201610546U (en) * | 2010-01-07 | 2010-10-20 | 贵州省交通规划勘察设计研究院 | Prestress anchoring frame plat |
| CN102704623A (en) * | 2012-06-12 | 2012-10-03 | 大连理工大学 | Combined FRP(Fiber Reinforced Plastic)-self prestressed concrete structure |
| CN103205976A (en) * | 2013-04-26 | 2013-07-17 | 西南交通大学 | Multistage frame beam slope protection structure with self-adjustable slope body pressure |
| CN203393729U (en) * | 2013-07-23 | 2014-01-15 | 重庆交通大学 | Road slope protection structure |
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