CN214143747U - H formula combination cling compound structure with prestressed anchorage cable - Google Patents

Abstract

The utility model discloses an h formula combination cling compound structure with prestressed anchorage cable relates to the landslide and administers and side slope protection technical field, including the slipbed and the landslide body, be equipped with the glide plane between slipbed and the landslide body, the internal front row's of being equipped with of slipbed and landslide, be equipped with contact crossbeam and prestressed anchorage cable on the front row's of piles, be equipped with the back row's of piles on the contact crossbeam, be equipped with anchor section three, free section and outer anchor head in the prestressed anchorage cable, anchor section three sets up in the slipbed, and outer anchor head sets up in the front row's of piles, free section fixed connection is between anchor section three and outer anchor head. In the device, the anti-sliding capacity of the front row of piles and the rear row of piles can be fully exerted due to the existence of the reinforced concrete connection beam, meanwhile, the deformation of the anti-sliding piles is limited by the active anchor pulling force of the prestressed anchor cables, the pile top displacement and the stress state of the pile body are greatly improved, a combined anti-sliding system is formed, and the anti-sliding effect of the anti-sliding structure can be obviously improved.

Description

H formula combination cling compound structure with prestressed anchorage cable

Technical Field

The utility model relates to a landslide is administered and side slope protection technical field specifically is an h formula combination anti-skidding structure with prestressed anchorage cable.

Background

Landslide is a geological phenomenon with serious harm, and often causes serious personal casualties or property loss, and the landslide prevention and treatment research becomes a hotspot of geological engineering. At present, the measures for treating landslide and side slope mainly comprise anti-skid retaining walls, anti-skid piles, weight reduction by brushing, backfill back pressure and the like, wherein the anti-skid piles are most widely applied to landslide treatment and side slope protection due to the advantages of large self rigidity, better self-stability, convenient construction, obvious reinforcement effect and the like.

At present, although common anti-slide mono-piles are widely applied, the defects are very obvious, and especially for large-scale landslide control projects, the situation that the conventional single-row anti-slide piles cannot meet the design requirements easily due to overlarge thrust of a landslide body is often met, so that the control projects are often completed by adopting double-row anti-slide piles or prestressed anchor cable anti-slide piles. Common double-row anti-slide piles comprise portal double-row piles, bent anti-slide piles, seat type piles and the like, wherein the double-row anti-slide piles are used for connecting front and rear double-row piles into a whole through a connecting beam to enhance the integral rigidity of the anti-slide structure, but the double-row anti-slide piles are only a passive protection measure. The traditional anti-slide single pile with the prestressed anchor cables is provided with the prestressed anchor cables at the pile top and part of the pile body of the anti-slide pile, but the landslide thrust which can be borne by the anti-slide single pile is limited.

For solving the landslide control method of the existing double-row anti-slide pile, there is "passive" protection, and the limited scheduling problem of landslide thrust that the existing anti-slide single pile of prestressed anchorage cable can bear, the utility model provides a pile top and pile body horizontal deformation are less, prop up effectual after the bending resistance is strong, the bulk rigidity is big, the loaded, and the h formula combination anti-slide structure that is equipped with the prestressed anchorage cable that specially adapted scale is great is administered engineering and high side slope protection engineering.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an h formula combination cling compound structure with prestressed anchorage cable to solve the problem in the above-mentioned technical background. In order to achieve the above object, the utility model provides a following technical scheme: an h-type combined anti-sliding structure with a prestressed anchor cable comprises a sliding bed and a sliding slope body, wherein a sliding surface is arranged between the sliding bed and the sliding slope body, a front row pile is arranged in the sliding bed and the sliding slope body, a connection cross beam and the prestressed anchor cable are arranged on the front row pile, a rear row pile is arranged on the connection cross beam, a cantilever section, a first sliding body section and a first anchoring section are arranged in the front row pile, the first anchoring section is fixedly connected in the sliding bed, the cantilever section and the first sliding body section are arranged in the sliding slope body, the cantilever section, the first sliding body section and the first anchoring section are arranged from top to bottom, the cantilever section, the first sliding body section and the first anchoring section are fixedly connected, a second sliding body section and a second anchoring section are arranged in the rear row pile, the second sliding body section is arranged in the sliding slope body, the second anchoring section is arranged in the sliding bed, a third anchoring section, a free section and an outer anchor head are arranged in the prestressed anchor cable, the anchor section III is arranged in the sliding bed, the outer anchor head is arranged in the front row of piles, and the free section is fixedly connected between the anchor section III and the outer anchor head.

As a further aspect of the present invention: the front row of piles, the connection cross beam and the rear row of piles are all made of reinforced concrete materials, and the connection among the front row of piles, the connection cross beam and the rear row of piles is rigid connection.

As a further aspect of the present invention: the length of the cantilever section is 10% -30% of the total length of the front row pile body, the depth of the anchoring section is 20% -40% of the total length of the front row pile body, the cross section is rectangular, the length of the cross section is 1 m-3 m, and the width of the cross section is 0.6-1 time of the length.

As a further aspect of the present invention: the depth of the anchoring section II is the same as that of the front row of piles, and the cross section shape and size of the anchoring section II are the same as those of the front row of piles.

As a further aspect of the present invention: the shape of the vertical section of the connecting beam is square, the side length of the vertical section is the same as the width of the front row of piles, and the length of the cross section is 1.5-3 times of that of the front row of piles.

As a further aspect of the present invention: the inclination angle of the prestressed anchor cable is 10-35 degrees, the length of a free section in the prestressed anchor cable is not less than 5m and exceeds a sliding surface by 1.5m, and the length of the anchoring section is 3-8 m.

Has the advantages that:

1. the h-type combined anti-sliding structure with the prestressed anchor cables is connected into a whole by using the connection cross beams with high rigidity at the pile body of the front row of piles and the pile top of the rear row of piles respectively to form a combined structure form, the cooperative anti-sliding capability of the front row of piles and the rear row of piles is exerted, the thrust transmitted from a landslide is jointly borne by the front row of piles and the rear row of piles, and the self stability and the integral rigidity of the anti-sliding structure are enhanced.

2. According to the h-type combined anti-sliding structure with the prestressed anchor cables, the pile body of the front row pile is provided with the prestressed anchor cables, so that the anti-sliding capacity of the anti-sliding pile is exerted, the deformation of the anti-sliding pile is limited by means of the active anchor tension of the prestressed anchor cables, the pile top displacement and the stress state of the pile body are greatly improved, and the anti-sliding effect of the anti-sliding pile can be well improved.

3. The active protection prestressed anchor cable and the passive anti-sliding connection cross beam are arranged on the front row piles in the h-type combined anti-sliding structure provided with the prestressed anchor cables, so that the whole h-type combined anti-sliding structure provided with the prestressed anchor cables is coordinated and acted mutually, the structural form of the anti-sliding pile is optimized, the anti-sliding capacity is further improved compared with that of a common anti-sliding pile, and the technical and economic comprehensive effect of landslide control is further improved.

4. The h-type combined anti-sliding structure with the prestressed anchor cables is strong in operability and simple in construction process, because pile holes of front row piles are excavated firstly during construction, the prestressed anchor cables are constructed, and then the connecting cross beams and the rear row piles are constructed, the construction period is short, the quality is reliable, the construction cost is low, and the h-type combined anti-sliding structure is suitable for not only common side slopes or high and steep side slopes, but also foundation pit engineering and large landslide management engineering and is convenient to popularize and apply.

Drawings

Fig. 1 is a schematic plan view of the present invention;

fig. 2 is a schematic structural diagram of the front row of piles, the connecting beam and the rear row of piles in the present invention;

FIG. 3 is a detailed structural diagram of the prestressed anchorage cable according to the present invention;

FIG. 4 is a flow chart of the construction process of the present invention for implementing steps a, b, c, d, e, f, and g;

in the figure: 1. the pile comprises front row piles, 101 cantilever sections, 102 sliding body sections I, 103 anchoring sections I, 2 connecting cross beams, 3 rear row piles, 301 sliding body sections II, 302 anchoring sections II, 4 prestressed anchor cables, 401 outer anchor heads, 402 free sections, 403 anchoring sections III, 5 sliding beds, 6 sliding bodies and 7 sliding surfaces.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a following technical scheme:

as shown in fig. 1-4, an h-type combined anti-skid structure with prestressed anchor cables comprises a slide bed 5 and a slide body 6, a sliding surface 7 is arranged between the slide bed 5 and the slide body 6, front row piles 1 are arranged in the slide bed 5 and the slide body 6, a connection beam 2 and prestressed anchor cables 4 are arranged on the front row piles 1, rear row piles 3 are arranged on the connection beam 2, the front row piles 1, the connection beam 2 and the rear row piles 3 are all made of reinforced concrete materials, the connection among the three is rigid connection, reinforced concrete and rigid connection can enhance the connection stability among the piles, prevent the internal structure from being damaged and influence the anti-skid function of the structure, the pile bodies of the front row piles 1 and the pile tops of the rear row piles 3 are connected into a whole by the connection beam 2 with high rigidity, the h-type combined anti-skid structure is constructed, and the cooperative anti-skid capability of the front row and rear row anti-skid piles is exerted, the thrust transmitted from the landslide is jointly born by the front row of piles 1 and the rear row of piles 3, the self stability and the overall rigidity of the anti-skidding structure are enhanced, the vertical section of the connecting beam 2 is square, the side length of the vertical section is equal to the width of the front row of piles 1, the length of the cross section is 1.5-3 times of that of the front row of piles 1, the front row of piles 1 are internally provided with cantilever sections 101, first sliding body sections 102 and first anchoring sections 103, the first anchoring sections 103 are fixedly connected in the slide bed 5, the cantilever sections 101 and the first sliding body sections 102 are arranged in the landslide body 6, the cantilever sections 101, the first sliding body sections 102 and the first anchoring sections 103 are arranged from top to bottom, the cantilever sections 101, the first sliding body sections 102 and the first anchoring sections 103 are fixedly connected, the length of the cantilever sections 101 is 10% -30% of the total length of the pile body of the front row of piles 1, and the depth of the first anchoring sections 103 is 20% -40% of the total length of the pile body of the front row of piles 1, the cross section of the pile is rectangular, the length of the cross section is 1 m-3 m, the width of the cross section is 0.6-1 time of the length, the arrangement is carried out, the distance of the front row of piles 1 penetrating into a slide bed 5 is increased, the structure of the front row of piles 1 is further strengthened, the piles are prevented from falling under the action of impact force, a slide section II 301 and an anchoring section II 302 are arranged in the rear row of piles 3, the slide section II 301 is arranged in a slide slope body 6, the anchoring section II 302 is arranged in the slide bed 5, the depth of the anchoring section II 302 is the same as that of the front row of piles 1, the cross section shape and the size are the same as those of the front row of piles 1, an anchoring section III, a free section 402 and an outer anchor head 401 are arranged in the prestressed anchor cable 4, the anchoring section III 403 is arranged in the slide bed 5, the outer anchor head 403 is arranged in the front row of piles 1, the free section 402 is fixedly connected between the anchoring section III 403 and the outer anchor head 401, the inclination angle of the prestressed anchor cable 4 is 10-35 degrees, the length of a free section 402 in the prestressed anchor cable 4 is not less than 5m and is 1.5m when exceeding a sliding surface 7, the length of an anchoring section three 403 is 3 m-8 m, the sliding resistance of the anti-slide pile is exerted, meanwhile, the deformation of the anti-slide pile is limited by the active anchor pulling force of the prestressed anchor cable 4, the pile top displacement and the stress state of a pile body are greatly improved, the sliding resistance effect of the anti-slide pile can be better improved, and the whole h-type combined anti-slide structure provided with the prestressed anchor cable 4 is mutually coordinated and coacted by the prestressed anchor cable 4 and the passive sliding resistance connection cross beam 2, so that the structural form of the anti-slide pile is optimized, the sliding resistance is further improved compared with the common anti-slide pile, and the technical and economic comprehensive effect of landslide control is further improved.

When the utility model is in construction, pile holes of the front row piles 1 are excavated, the prestressed anchor cables 4 are constructed, and then the reinforcement welding and the concrete pouring of the front row piles 1 are performed at a certain position below the connection beam 2; then excavate 3 holes in back campshed and contact crossbeam 2, carry out 1 remaining pile position in front campshed, 3 whole steel bar welding of back campshed again and tie up and contact crossbeam 2 template installations, pour 1 remaining pile position in front campshed, 3 whole and contact crossbeam 2 parts in back campshed at last, concrete step is as follows:

a. excavating pile holes of the front row of piles 1: adopting manual hole digging construction, digging by using pickaxes and shovels, breaking by using hammers and drill rods when hard soil layers are met, breaking by using air picks when large stones exist, and carrying out wall protection and support in the digging process;

b. and (3) construction of a prestressed anchor cable 4: cleaning rock powder and soil scraps in a hole by adopting a drilling method with small disturbance to surrounding strata, inserting an assembled rod body into the rod body, placing a grouting pipe at a position 500mm away from the bottom of the hole, uniformly injecting concrete into the drilled hole, tensioning an anchor cable twice when the concrete reaches 75% of the designed strength, wherein the first tensioning is divided into five stages, the tension values of the first four stages are respectively 25%, 50%, 75% and 100% of the designed tension value and are respectively stabilized for 5 minutes, the tension value of the last stage is 110% of the designed tension value, and the stabilization time is 30 minutes; locking for 48 hours, and then performing second compensation tensioning, wherein the stage number and the tension value of the second tensioning are the same as those of the first tensioning;

c. and (3) welding, binding and pouring concrete for the reinforcing steel bars of the front row pile 1 at a certain position below the cross beam 2: welding and binding a reinforcement cage on the front row pile 1 part at a certain position below the connecting beam 2, adopting segmented binding reinforcement and segmented casting, performing concrete casting when one section of the reinforcement is welded and bound, vibrating and compacting once when one section is continuously cast in the casting process, stopping casting until a certain position below the connecting beam 2, and reserving transverse stressed reinforcement; when the anchor is poured to the position of the outer anchor head 401 in the prestressed anchor cable 4, the anchor plate is fixed in the reinforcement cage, and concrete is poured;

d. excavating a pile hole of the rear row of piles 3: and after the concrete of the front row of piles 1 reaches certain strength and is primarily acted with the rock-soil mass around the piles, excavating 3 holes of the rear row of piles. Adopting manual hole digging construction, digging by using pickaxes and shovels, breaking by using hammers and drill rods when hard soil layers are met, breaking by using air picks when large stones exist, and carrying out wall protection and support in the digging process;

e. excavating a connection beam 2: adopting manual hole digging construction, digging with pickaxe and spade, breaking with hammer and drill rod when meeting hard soil layer, widening 5cm on two sides of the connection beam 2 when digging foundation pit, ensuring the working surface of template installation, leveling the substrate, paving 5cm thick mortar cushion layer on the substrate for leveling;

f. 1 surplus pile position of preceding campshed, 3 whole steel bar welding of back campshed are tied up and are linked 2 template installations of crossbeam: firstly, prefabricating and placing a reinforcement cage on the rear row of piles 3, reserving transverse stressed steel bars, carrying the transverse stressed steel bars reserved in the step c, and welding and bundling all the steel bars reserved on the rest part of the front row of piles 1; finally, installing a template of the connection beam 2, connecting the connection beam 2, the front row of piles 1 and the rear row of piles 3 in a straight thread mode, strictly centering two joints during connection, ensuring accurate installation positions of the reinforcing steel bars, and ensuring the thickness of a protective layer of the reinforcing steel bars by using concrete cushion blocks;

g. pouring the residual pile position of the front row pile 1, the whole rear row pile 3 and the part of the connection beam 2: firstly, pouring is carried out from a rear row of piles 3, blanking is carried out by adopting a tandem cylinder or a guide pipe, layered vibration is carried out, the distance from the bottom of the tandem cylinder to the alkali surface is preferably not more than 2m, the tandem cylinder is continuously poured in layers until reaching the joint with the connection cross beam 2, then pouring of the connection cross beam 2 is carried out, concrete is vibrated by adopting an inserted vibrator, the distance between a vibrating rod and a template is kept between 5 and 10cm during vibration, quick-insertion slow-drawing is followed during vibration, vibration points are uniformly arranged, stagnation points are shifted, and the shifting distance is not more than 1.5 times of the action radius of the vibrator. And finally, pouring the rest part of the front row of piles 1, wherein the pouring requirement is the same as that of the rear row of piles 3.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides an h formula combination cling compound structure with prestressed anchorage cable, includes sliding bed (5) and landslide body (6), its characterized in that: a sliding surface (7) is arranged between the sliding bed (5) and the sliding mass (6), front row piles (1) are arranged in the sliding bed (5) and the sliding mass (6), a connection cross beam (2) and a prestressed anchor cable (4) are arranged on the front row piles (1), rear row piles (3) are arranged on the connection cross beam (2), a cantilever section (101), a sliding mass section I (102) and an anchoring section I (103) are arranged in the front row piles (1), the anchoring section I (103) is fixedly connected in the sliding bed (5), the cantilever section (101) and the sliding mass section I (102) are arranged in the sliding mass (6), the cantilever section (101), the sliding mass section I (102) and the anchoring section I (103) are arranged from top to bottom, the cantilever section (101), the sliding mass section I (102) and the anchoring section I (103) are fixedly connected, a sliding mass section II (301) and an anchoring section II (302) are arranged in the rear row piles (3), the second slide body segment (301) is arranged in a slide body (6), the second anchoring segment (302) is arranged in a slide bed (5), a third anchoring segment (403), a free segment (402) and an outer anchor head (401) are arranged in the prestressed anchor cable (4), the third anchoring segment (403) is arranged in the slide bed (5), the outer anchor head (401) is arranged in a front row of piles (1), and the free segment (402) is fixedly connected between the third anchoring segment (403) and the outer anchor head (401).

2. The h-type combined anti-skid structure provided with the prestressed anchor cables as claimed in claim 1, wherein: the front row of piles (1), the connection cross beam (2) and the rear row of piles (3) are all made of reinforced concrete materials, and the front row of piles, the connection cross beam and the rear row of piles are all in rigid connection.

3. The h-type combined anti-skid structure provided with the prestressed anchor cables as claimed in claim 1, wherein: the length of the cantilever section (101) is 10% -30% of the total length of the pile body of the front row pile (1), the depth of the anchoring section I (103) is 20% -40% of the total length of the pile body of the front row pile (1), the cross section is rectangular, the length of the cross section is 1 m-3 m, and the width of the cross section is 0.6-1 time of the length.

4. The h-type combined anti-skid structure provided with the prestressed anchor cables as claimed in claim 1, wherein: the depth of the anchoring section II (302) is the same as that of the front row of piles (1), and the shape and the size of the cross section of the anchoring section II are the same as those of the front row of piles (1).

5. The h-type combined anti-skid structure provided with the prestressed anchor cables as claimed in claim 1, wherein: the shape of the vertical section of the connection beam (2) is square, the side length of the vertical section is the same as the width of the front row of piles (1), and the length of the cross section is 1.5-3 times of that of the front row of piles (1).

6. The h-type combined anti-skid structure provided with the prestressed anchor cables as claimed in claim 1, wherein: the inclination angle of the prestressed anchor cable (4) is 10-35 degrees, the length of a free section (402) in the prestressed anchor cable (4) is not less than 5m and is 1.5m when exceeding the sliding surface (7), and the length of an anchoring section III (403) is 3-8 m.

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