CN103205976A - Multistage frame beam slope protection structure with self-adjustable slope body pressure - Google Patents
Multistage frame beam slope protection structure with self-adjustable slope body pressure Download PDFInfo
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- CN103205976A CN103205976A CN2013101489735A CN201310148973A CN103205976A CN 103205976 A CN103205976 A CN 103205976A CN 2013101489735 A CN2013101489735 A CN 2013101489735A CN 201310148973 A CN201310148973 A CN 201310148973A CN 103205976 A CN103205976 A CN 103205976A
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Abstract
The invention relates to a geotechnical engineering slope treatment technology and discloses a multistage frame beam slope protection structure with self-adjustable slope body pressure, realizing cooperative work among upper, lower, left and right multi-span anchor frame beams so as to commonly bear and regulate slope pressure applied to the multi-span anchor frame beams. The multistage frame beam slope protection structure comprises frame beams which are formed by crossed transverse beams and vertical beams and are distributed on slopes in different slope stages, anchor rods are arranged at junctions of the transverse beams and the vertical beams at certain intervals, a platform is arranged between slopes in each two adjacent slope stages, the frame beams are distributed on each platform, and the frame beams in each two adjacent slope stages and the vertical beams in the frame beams on each platform are connected together to form a whole structure. According to the multistage frame beam slope protection structure disclosed by the invention, the frame beams on each two adjacent slopes are connected together by virtue of the frame beams on each platform, so that the frame beams within a certain range can be connected together to form a whole structure, and the whole structure is very suitable for multistage slope engineering treatment and protection.
Description
Technical field
The present invention relates to the sloping improvement technology in geotechnical engineering limit (cunning), particularly a kind of multistage Vierendeel girder protective slope structure.
Background technology
Framework anchor structure (also being the anchor bolt frame beam) is the light-duty retaining structure of a class, because advantages such as its flexibility and construction convenience, safety are widely used in landslide or slope treatment engineering, especially when multistage High Slope Protection, can be used in the classification digging process and reinforce step by step.But in current this type of actual engineering, there are two typical problems usually: the one, there is not connection between the anchor bolt frame beam on slopes at different levels, independent protection is at the corresponding levels domatic separately, can not work in coordination with between the multistage Vierendeel girder and share sloping body compressive load; The 2nd, the shrinkage joint between the domatic Vierendeel girders at different levels along domatic from top to down all on same straight line, (as heavy showers) under some specific condition may be created between the adjacent expansion seam sloping body from top to down integral body all skid off.Therefore, the framework anchor structure for commonly used in the current engineering though certain advantage is arranged, also exists tangible unreasonable part.
Summary of the invention
Technical problem to be solved by this invention, it is exactly the shortcoming at prior art framework anchor structure, provide a kind of sloping body pressure self-adjusting formula multistage Vierendeel girder protective slope structure, realize collaborative work between many Pin anchor bolt frame beam up and down, bear jointly and corrective action sloping body pressure thereon.
The present invention solve the technical problem, the technical scheme that adopts is, the multistage Vierendeel girder protective slope structure of slope body pressure self-adjusting formula, has the Vierendeel girder that cross one another crossbeam and vertical beam constitute, described Vierendeel girder is distributed on different slopes level domatic, be provided with anchor pole at crossbeam and vertical beam infall across a certain distance mutually, it is characterized in that, be provided with platform between adjacent slope level domatic, be distributed with Vierendeel girder on the described platform, the Vierendeel girder of adjacent slope level and the vertical beam in the Vierendeel girder on the platform link together and become overall structure.
Technical scheme of the present invention, utilize the Vierendeel girder on the platform that adjacent Vierendeel girder on domatic is coupled together, Vierendeel girder in the certain limit can be connected into an overall structure, realize collaborative work between many Pin anchor bolt frame beam up and down, bear jointly and corrective action sloping body pressure thereon.
Further, be distributed in the Vierendeel girder on domatic, crossbeam is every one shrinkage joint of anchor pole horizontal spacing setting of 3～4 times.
The shrinkage joint be set be the common technology of anchor bolt frame beam deformational stress of releiving in the geotechnical engineering, Vierendeel girder protective slope structure distribution area of the present invention is wide, crossbeam and vertical beam length are bigger, adopt this technology to be conducive to discharge anchor bolt frame beam deformational stress, improve stability and the reliability of whole Vierendeel girder protective slope structure.
Further, the shrinkage joint interlaced arrangement in the adjacent Vierendeel girder on domatic.
Shrinkage joint interlaced arrangement in the adjacent Vierendeel girder on domatic, the compressive stress that produces in the time of can disperseing sloping body to slide effectively avoids sloping body integral body to skid off.
Concrete, be distributed in the Vierendeel girder on domatic, crossbeam is identical with the vertical beam cross sectional dimensions.
Be distributed in the Vierendeel girder on domatic, belong to safeguard structure, need bear bigger sloping body pressure, crossbeam and vertical beam adopt identical cross sectional dimensions, can improve the ability of bearing pressure of structure, and make things convenient for engineering construction, are conducive to improve programming.
Further, in the Vierendeel girder on the platform, be provided with transverse expansion joint between vertical beam, and transverse expansion joint is laid staggeredly also.
Between the vertical beam on the platform transverse expansion joint being set, also is a kind of means for the treatment of temperature stress, is conducive to improve the stability of Vierendeel girder.Simultaneously, transverse expansion joint is laid staggeredly, and the compressive stress that produces in the time of can disperseing the superior and the subordinate's slope body to slide is effectively avoided skidding off with one-level slope body integral body.
Recommend, the domatic gradient of adjacent slope level is identical.
Adopt the identical domatic gradient, domatic pressure at different levels are comparatively approaching, and whole Vierendeel girder is stressed more even, can improve stability and the safety of Vierendeel girder protective slope structure.
Further, every grade of domatic toe arranges the gutter, with the vertical beam infall, the gutter places on the vertical beam, make the gutter along domatic to medial surface to domatic distance equate throughout.
Every grade of domatic toe arranges the gutter, can isolate independent processing to every grade of domatic rainwater, avoids multistage domatic rainwater to concentrate, and reduces rainwater to the souring of sloping body, improves protection effect.
Preferably, described crossbeam and vertical beam are reinforced concrete structure.
Reinforced concrete structure is the most general engineering component of geotechnical engineering, is fit to very much this many slopes of the present invention level, large-area safeguard structure.
Preferably, described crossbeam and vertical beam cross section are rectangle.
The crossbeam of reinforced concrete structure and vertical beam adopt rectangular cross sectional shape to have easy construction, the advantage that cost is low.
Recommend, be distributed in Vierendeel girder and the Vierendeel girder that is distributed on domatic on the platform, the ratio of the corresponding length of side of its section of beam is 2/3～3/4.
Be distributed in Vierendeel girder and the Vierendeel girder that is distributed on domatic on the platform, at different stressing conditions, adopt the different cross section size, can either guarantee protection effect, can also save construction costs and cost.
The invention has the beneficial effects as follows, both continued traditional side slopes at different levels " type separately " convenient, safe advantage of framework anchor bolt construction, make that simultaneously the more domatic crossbeam of multi-disc is connected with vertical beam is organic, can give full play to the characteristics of multi-disc Vierendeel girder cooperative bearing, help multi-disc Vierendeel girder automatic equalization ground to adjust sloping body pressure, make anchor bolt frame beam more reasonable stress on the whole.Simultaneously, adopt framework bank protection form at sloping roof panels at different levels, equally also can adopt the slope vegetation protection technology to carry out slope protection in its lattice, thereby but the round Realization engineering is propped up the combination of retaining and vegetative protection, form stealthy retaining structure system, in rib (cunning) slope, taken into account greening and the environmental protection of whole sloping body again.Have sloping body extent of stability height, safe and reliable, convenient and quick construction, saving construction costs, easily with plurality of advantages such as slope vegetation protection combines, for administering slope, limit (cunning) quickly and efficiently, have Technological Economy comprehensive benefit preferably.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the local enlarged diagram of Fig. 1;
Fig. 4 is embodiment platform upper frame girder construction schematic diagram;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the C-C sectional view of Fig. 4;
Fig. 7 a～f is the construction process schematic diagram.
Among the figure, the basic lattice of 1-unit; The 2-vertical expansion joint; The 3-platform; 4-is transverse expansion joint between the vertical beam that platform arranges; Flat upper surface behind the 5-excavation; The 6-anchor pole; The 7-vertical beam; The 8-crossbeam; 9-Vierendeel girder (comprising vertical beam and crossbeam); 42-platform crossbeam; 43-platform trailing edge line; 44-platform costa; The 45-gutter; Domatic behind the 46-excavation; 71-is original domatic; 72-excavates sloping body; 76-crossbeam beam groove; 77-landing beam groove; 78-vertical beam beam groove; The 79-shrinkage joint; 710-crossbeam reinforcing bar; 711-landing beam reinforcing bar; 712-vertical beam reinforcing bar; 713-steel bar concrete crossbeam; 714-steel bar concrete landing beam; The outer anchor head of 715-anchor pole; 716-steel bar concrete vertical beam; The a-gutter along domatic to medial surface to domatic distance; α-domatic the gradient.
The specific embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The present invention utilizes the Vierendeel girder that distributes on the platform by between adjacent slope level domatic platform being set, will be connected along the Vierendeel girder on the neighbouring two-stage slope of aspect, and along aspect, horizontal wall inscription to the adjacent multistage anchor bolt frame beam of Vierendeel girder formation monolithic.Specifically, the vertical beam of the anchor bolt frame beam of neighbouring two-stage (along aspect) is a continuous beam exactly, along two-stage up and down domatic and therebetween platform be broken line type and lay, except on two-stage up and down is domatic, laying the crossbeam with a determining deviation, also on platform, lay crossbeam with a determining deviation, each crossbeam all intersects with vertical beam, but does not establish anchor pole on the crossover node of beam anyhow on the platform, and the shrinkage joint between the adjacent domatic Vierendeel girder all is laid staggeredly.Like this, present the lattice anchoring status on two-stage slope and the platform and integrally therebetween up and down, form a space combination structure, with its whole opposing Thrust of Landslide, make the sloping body pressure that acts on the Vierendeel girder be able to collaborative adjustment the in a big way, be conducive to the harmony of anchor bolt frame beam stress, and interlaced arrangement horizontal, vertical expansion joint, be conducive to the sloping body of the collaborative reinforcing of polylith anchor bolt frame beam, the degree of stability of sloping body is further enhanced.Simultaneously, but in the sash of domatic and platform all grass planting, plant trees and carry out the vegetation cultivation, play the effect of greening side slope and reinforcing side slope.Will be along the domatic Vierendeel girder anchor structure of the neighbouring two-stage of aspect together with the frame beam structure on the related platform as a basic lattice anchoring unit, (determine according to concrete actual conditions designing and calculating to arranging with certain spacing along horizontal wall inscription, as: be taken as 9m), in the still available single Pin lattice reinforcing of local edge, administer the sloping effect in limit (cunning) to reach, as Fig. 1～shown in Figure 3.
Embodiment
The multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula of the present invention is shown in Fig. 1～3.Wherein Fig. 1 is elevation, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the local enlarged diagram of Fig. 1.Domatic three the platform upper frame girder constructions that reach therebetween that go up of level Four have been shown among Fig. 1.Cross one another crossbeam 8 and vertical beam 7 constitutes Vierendeel girders 9, and these Vierendeel girders 9 are distributed on different slopes level domatic, are provided with anchor pole 6 at crossbeam 8 and vertical beam 7 infalls across a certain distance mutually, and these routine Vierendeel girder 9 middle cross beams 8 all are provided with anchor pole 6 with vertical beam 7 infalls.If the size of basic lattice unit 1 is little, also can as basic lattice unit 1, interval anchor pole be set mutually across a certain distance.In this example, be provided with platform 3 between adjacent slope level domatic, its width is 2m.Be distributed with Vierendeel girder 9 on the platform 3, it is middle to be positioned at platform 3 comprising 8, one on two crossbeams, and one is positioned at platform costa 44 places.The Vierendeel girder 9 of adjacent slope level and the vertical beam 7 in the Vierendeel girder 9 on the platform link together and become overall structure, and as shown in Figure 2, vertical beam 7 is a continuous broken line.As can be seen from Figure 2, the domatic gradient (α) of adjacent slope level is identical, and the pressure of domatic generations at different levels is also substantially the same, can avoid producing the phenomenon of unbalance stress like this, helps to improve the resistance to overturning of Vierendeel girder.
As seen from Figure 1, in this routine Vierendeel girder protective slope structure, be distributed in the Vierendeel girder 9 on domatic, on the crossbeam 8 every one vertical expansion joint of anchor pole horizontal spacing setting 2 of 3 times, and vertical expansion joint 2 interlaced arrangement in the adjacent Vierendeel girder 9 on domatic can be known by local enlarged diagram shown in Figure 3 and to find out.In this example, all crossbeams 8 and vertical beam 7 are reinforced concrete structure, are distributed in the Vierendeel girder 9 on domatic, and crossbeam 8 and vertical beam 7 cross sections are measure-alike rectangle, specifically are of a size of 30 * 40cm.Because the Vierendeel girder that is distributed on the platform does not bear sloping body pressure basically, only play the connection effect, so for the Vierendeel girder that is distributed on the platform, its section of beam size can be taken as 20 * 30cm, be 2/3～3/4 of the corresponding length of side in the Vierendeel girder middle cross beam cross section on domatic.
Referring to Fig. 3, in the Vierendeel girder 9 on this routine platform, be provided with transverse expansion joint 4 between vertical beam, be used for release temperature and change the stress that produces, be conducive to improve the stability of frame beam structure.
Fig. 4～Fig. 6 shows this routine platform upper frame girder construction, and every grade of domatic toe arranges gutter 45, with vertical beam 7 infalls, gutter 45 places on the vertical beam 7, make gutter 45 along domatic to medial surface to domatic distance equate throughout, be a.
Job practices:
The multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula of the present invention applies as follows, and its schematic diagram is namely progressively realized to (f) from (a) as shown in Figure 7 in turn.
1) ground of classification excavation slope from top to down body 72, and excavated platform 3, shown in Fig. 7 (a);
2) for multistage high slope 71, follow the excavation back principle of a retaining in time, after excavation two-stage (excavating three grades at most), in domatic boring, anchor pole reinforcing bar, slip casting down, finish the construction of anchor pole 6, by designing requirement shown in Fig. 7 (b);
3) smooth domatic 46 and sloping roof panel, to each basic lattice anchoring unit, according to shrinkage joint and beam body design attitude unwrapping wire, and domatic 46 and platform 3 excavation form each Vierendeel girder beam groove, the crossbeam beam groove 76 shown in (c) among Fig. 7, landing beam groove 77 and vertical beam beam groove 78.
4) to the good reinforcing cage of vertical beam, domatic crossbeam, platform crossbeam shuttering and colligation, notice that Vierendeel girder crossover node place laid reinforcement binding is firm, shown in (d) among Fig. 7;
5) the domatic and platform framework beam of each basic lattice anchoring unit of employing concrete (C25 number at least) continuous placing, usually 2～3 grades of domatic vertical beam continuous placings are once finished, and carry out the construction that is connected of anchor pole 6 outer anchor heads 715 and Vierendeel girder, shown in (e) among Fig. 7;
6) treat to build all Vierendeel girders of finishing and all reach curing period after, apply the gutter 45 of finishing on the sloping roof panel of relevant slope level again, the side slope below the excavation then is shown in (f) among Fig. 7;
7) repeat 2)～6), till finishing all anchor bolt frame beam constructions of side slope.
Claims (10)
1. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula, has the Vierendeel girder that cross one another crossbeam and vertical beam constitute, described Vierendeel girder is distributed on different slopes level domatic, be provided with anchor pole at crossbeam and vertical beam infall across a certain distance mutually, it is characterized in that, be provided with platform between adjacent slope level domatic, be distributed with Vierendeel girder on the described platform, the Vierendeel girder of adjacent slope level and the vertical beam in the Vierendeel girder on the platform link together and become overall structure.
2. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 1 is characterized in that, is distributed in the Vierendeel girder on domatic, and crossbeam is every one shrinkage joint of anchor pole horizontal spacing setting of 3～4 times.
3. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 2 is characterized in that, the shrinkage joint interlaced arrangement in the adjacent Vierendeel girder on domatic.
4. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 1 is characterized in that, is distributed in the Vierendeel girder on domatic, and crossbeam is identical with the vertical beam cross sectional dimensions.
5. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 1 is characterized in that, in the Vierendeel girder on the platform, be provided with transverse expansion joint between vertical beam, and transverse expansion joint is laid staggeredly.
6. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 1 is characterized in that, the domatic gradient of adjacent slope level is identical.
7. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 1, it is characterized in that every grade of domatic toe arranges the gutter, with the vertical beam infall, the gutter places on the vertical beam, make the gutter along domatic to medial surface to domatic distance equate throughout.
8. according to any multistage Vierendeel girder protective slope structure of described sloping body pressure self-adjusting formula of claim 1～7, it is characterized in that described crossbeam and vertical beam are reinforced concrete structure.
9. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 8 is characterized in that described crossbeam and vertical beam cross section are rectangle.
10. the multistage Vierendeel girder protective slope structure of sloping body pressure self-adjusting formula according to claim 9 is characterized in that, is distributed in Vierendeel girder and the Vierendeel girder that is distributed on domatic on the platform, and the ratio of the corresponding length of side of its section of beam is 2/3～3/4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334441A (en) * | 2013-07-23 | 2013-10-02 | 重庆交通大学 | Road slope protecting structure and construction method thereof |
| CN104805851A (en) * | 2015-05-07 | 2015-07-29 | 重庆交通大学 | Bending moment-resistant reinforcer for expansion joint between side slope lattice beams |
| CN104805848A (en) * | 2015-05-07 | 2015-07-29 | 重庆交通大学 | Reinforcing structure for expansion joint in side slope lattice |
| CN104831739A (en) * | 2015-05-07 | 2015-08-12 | 重庆交通大学 | Integrally reinforced type side slope lattice assembly |
| CN105862885A (en) * | 2016-04-12 | 2016-08-17 | 化学工业岩土工程有限公司 | Soil slope reinforcing method |
| CN105951852A (en) * | 2016-06-12 | 2016-09-21 | 中国十七冶集团有限公司 | Adjustable formwork for high slope frame beam concrete construction and construction method |
| CN106320350A (en) * | 2015-06-24 | 2017-01-11 | 辽宁有色基础工程公司 | Concrete pouring method for reinforced concrete lattice beams in slope treatment |
| CN107100646A (en) * | 2017-05-23 | 2017-08-29 | 梁美欣 | The additional fixing structure of loess tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334441A (en) * | 2013-07-23 | 2013-10-02 | 重庆交通大学 | Road slope protecting structure and construction method thereof |
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| CN104805848A (en) * | 2015-05-07 | 2015-07-29 | 重庆交通大学 | Reinforcing structure for expansion joint in side slope lattice |
| CN104831739A (en) * | 2015-05-07 | 2015-08-12 | 重庆交通大学 | Integrally reinforced type side slope lattice assembly |
| CN106320350A (en) * | 2015-06-24 | 2017-01-11 | 辽宁有色基础工程公司 | Concrete pouring method for reinforced concrete lattice beams in slope treatment |
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| CN105862885B (en) * | 2016-04-12 | 2018-07-03 | 化学工业岩土工程有限公司 | Soil slope reinforcing method |
| CN105951852A (en) * | 2016-06-12 | 2016-09-21 | 中国十七冶集团有限公司 | Adjustable formwork for high slope frame beam concrete construction and construction method |
| CN107100646A (en) * | 2017-05-23 | 2017-08-29 | 梁美欣 | The additional fixing structure of loess tunnel |
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| CN103205976B (en) | 2015-12-23 |
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Granted publication date: 20151223 Termination date: 20190426 |