CN109610407B - Ecological barricade of landslide prevention based on dead weight is balanced - Google Patents
Ecological barricade of landslide prevention based on dead weight is balanced Download PDFInfo
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- 230000002265 prevention Effects 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000009991 scouring Methods 0.000 claims abstract description 6
- 210000003371 toe Anatomy 0.000 claims description 97
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
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- 239000010959 steel Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 238000009415 formwork Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
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- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
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- 238000005406 washing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/066—Quays
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0233—Retaining or protecting walls comprising retention means in the backfill the retention means being anchors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0275—Retaining or protecting walls characterised by constructional features cast in situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention discloses an anti-landslide ecological retaining wall based on dead-weight balance, which is beneficial to the lasting stability of the retaining wall by utilizing the self gravity of the retaining wall and the loads of an anchor rod, an anti-landslide wall toe, an anchor rod pile and a retaining wall base in front and back, is provided with an ecological cave to provide a good living space for aquatic organisms, plays a role in purifying a water body, is provided with an anti-scouring column, reduces the impact of floating sundries in the water body impacted by waves generated by wind on the wall body to the wall body, and greatly enhances the protection of the retaining wall.
Description
The application is a divisional application of invention patent with application number of 2018104445873 and application date of 2018.05.10, and is named as 'an ecological retaining wall easy to slide on the basis of water level change and a construction method'.
Technical Field
The invention relates to the technical field of ecological retaining walls, in particular to an ecological retaining wall based on bank slope support of a mountain canyon type river channel with large water level change.
Background
For water conservancy engineering buildings, when water flows through the water conservancy engineering buildings, large impact force is generated, necessary protective measures are taken for river channels and side slopes on two sides in general engineering to protect river banks from being washed away and ensure the stability and safety of the side slopes and buildings nearby, and the side slopes on the two sides and the river channels are treated by methods of stone masonry protection or bottom protection, concrete retaining walls and the like in engineering. For the embankment with the water level frequently changing and easy to slide, the retaining wall deforms and even collapses under the action of long-term water flow impact, and the engineering safety is seriously threatened. Meanwhile, most rivers in most of the areas are polluted to different degrees, how to build an ecological environment-friendly retaining wall and how to consider adopting stable and reliable comprehensive treatment measures to ensure the safety of the river channel and the slopes on two sides are an important technology in the treatment design and construction of the engineering slopes.
Disclosure of Invention
The invention aims to provide an anti-slip slope ecological retaining wall based on dead weight balance and a construction method, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme:
an anti-landslide ecological retaining wall based on self-weight balance comprises a wall body and a base, wherein the wall body and the base are poured into a whole at the same time, the wall body is in front of a water-facing surface, ecological pits are arranged below a normal water line in front of the wall body, the ecological pits can be made into different shapes, and anti-scouring columns are arranged from the upper part of the normal water line to the lower part of a flood line; and backfill is filled on the back side of the wall body.
The pouring part periphery of ecological barricade is provided with the back up coat, be provided with anchor bar and stirrup in the back up coat, the anchor bar is along the even parallel arrangement of wall body, the stirrup is bound on the anchor bar along anchor bar vertical direction, anchor bar and stirrup constitute the steel reinforcement cage structure, the steel reinforcement cage structure plays tensile effect, and the compressive strength height of concrete is very low nevertheless tensile strength, sets up the steel reinforcement cage structure, plays the effect of restraint to the wall body, makes it to bear stronger horizontal force.
The base bottom is provided with preceding anti-skidding wall toe and back anti-skidding wall toe, fix preceding stock stake on the preceding anti-skidding wall toe, fix back stock stake on the back anti-skidding wall toe.
The anchor pile of the invention can also be replaced by a root pile.
As a further improvement of the above technical solution:
the wall body is made of C20-C35 concrete or rubble concrete, the compressive strength of C20-C35 is 20-35MPa, the longitudinal section of the wall body is trapezoidal, the rear surface of the wall body is perpendicular to the base, the front surface of the wall body is in a slope shape, the slope range is 60-75 degrees, the length of the upper side of the trapezoid of the longitudinal section of the wall body is not less than 50cm, the base is horizontally arranged and is in a cuboid shape, the thickness of the base is not less than 20cm, the slope range is 60-75 degrees, impact of water flow on the wall body can be well buffered, stability of the retaining wall body can be facilitated, the base is not less than 20cm, the wall body can be well supported, and fracture caused by too large shearing force of an AB section at the front end of the base and a.
The front anti-skid wall toe and the rear anti-skid wall toe are arranged at the lower end of the base in a cuboid shape and are symmetrically arranged along the central axis of the base, the front anti-skid wall toe and the rear anti-skid wall toe are same in size and shape and have the height not less than 0.4m, the front width and the rear width of the front anti-skid wall toe and the rear anti-skid wall toe are larger than 1/5 of the front length and the rear length of the base, and too small front width and rear width of the anti-skid wall toe can cause too small bearing at the wall toe, so that the bearing cannot; the front-back distance between the front anti-skid wall toe and the rear anti-skid wall toe is not more than 2/5 of the front-back length of the base, and the stress at the center of the base is increased when the distance is too large under the gravity of the wall; the distance between the front anti-skid wall toe and the rear anti-skid wall toe in the left-right adjacent direction is not more than 2 m; preceding stock stake is fixed along preceding non-slip wall toe the central axis, back stock stake is fixed along back non-slip wall toe the central axis, and preceding stock stake passes preceding non-slip wall toe and perpendicular downwards with back non-slip wall toe from thickness central plane about the base respectively with back stock stake, preceding stock stake is not less than 2/3 of wall body height with back stock stake length.
Preferably, the front anti-skid wall toe and the rear anti-skid wall toe are the same in size and consistent in length with the length of the wall body, and are arranged in parallel and throughout along the length direction of the wall body; the front anti-skid wall toe and the rear anti-skid wall toe are provided with an anchor rod pile every 50cm along the central axis of the front anti-skid wall toe and the rear anti-skid wall toe, the length of the anchor rod pile is equal to the height of the wall body, and the distance between the front anti-skid wall toe and the rear anti-skid wall toe is not greater than 2/5 of the front length and the rear length of the base.
The length ratio of the AB section at the front end of the base to the CD section at the rear end of the base meets the following requirements: 2:1 < AB: CD < 4: 1.
the top surface of the wall body is made into a drainage slope not less than 4%, and the ecological cave is made into one or a combination of a plurality of first ecological cave, a second ecological cave and a third ecological cave.
The construction method of the landslide prevention ecological retaining wall based on dead weight balance comprises the following steps:
the first step is as follows: setting a temporary water retaining wall or a water retaining plate, performing measurement lofting, and lofting according to the basic size of a designed drawing, wherein the size meets the specification requirement;
the second step is that: cleaning sundries at the bottom, performing mechanical segmental excavation by taking every 10m as a section, wherein the collapse is easily caused by continuous excavation due to loose earthwork in the operation of a landslide section, and when the distance from the operation earthwork to the elevation of the base is 10-20cm, manually cleaning is carried out, the bearing capacity of the base is checked, and the requirement is not lower than 150 KPa;
the third step: excavating toe pits of the front anti-skid wall toe and the rear anti-skid wall toe, drilling pile holes of a front anchor rod pile and a rear anchor rod pile, wherein the pile holes are slightly larger than the anchor rods, and fixing and anchoring; the anchor rod pile is connected with the anti-slip wall toe to prevent the retaining wall from sliding and playing a great role;
the fourth step: manufacturing a base and an anti-slip wall toe template, using a wood template support die, a batten and a steel pipe as a support system according to the lofting size, temporarily supporting one side and the back side, correcting the verticality, pouring the base, a front anti-slip wall toe and a rear anti-slip wall toe, vibrating by using an insertion type 50 vibrating rod, curing after slurry is collected after pouring is finished, preventing impurities from polluting the surface, controlling the periphery of the base to drain, and removing the die after the strength requirement is met;
the fifth step: performing wall body measurement lofting and formwork erecting, temporarily fixing one side formwork and the back formwork, correcting verticality, fixing formworks of other sides according to the formwork supported firstly, arranging anchor bars and stirrups to form a reinforcement cage structure, then pouring the wall body in layers, controlling the height of each layer within 150cm, preventing uneven pouring of bubbles and cavities, arranging ecological pits and anti-scouring columns, performing secondary slurry collection on the wall body after pouring, and preventing cracks from appearing on the surface; setting a settlement joint at intervals of 20m or at corners of the wall body, wherein the width of the settlement joint is 20mm, and filling the settlement joint with wood boards; the settlement joint is used for preventing the retaining wall from being fractured due to different settlement degrees at each position, so that the service life of the retaining wall is shortened, and the function of the expansion joint is realized;
and a sixth step: maintaining the wall body after slurry collection is finished, preventing the surface from being polluted by impurities, removing the formwork after the strength requirement is met, and then covering, watering and maintaining by using geotextile until the strength requirement reaches 100%;
the seventh step: and after the strength of the wall body meets the requirement, backfilling the backfill material behind the wall, backfilling by 150cm layers of backfill in each layer, and performing construction by backfilling every 150cm layer, so that the phenomenon that the backfill is insufficient, a cavity is formed or the backfill does not reach the standard and collapses in the process of washing rainwater is prevented.
Advantageous effects
Compared with the common block retaining wall, the retaining wall is only suitable for offsetting of an outward pushing acting force and cannot offset an inward pushing acting force, so that the retaining wall can be well suitable for the pressure action of active soil pressure and passive soil pressure; the anchor rod piles arranged in front and at the back of the large length reduce the possibility that the retaining wall rotates and topples around the anti-skid wall toe, the lengths of the AB section and the CD section of the base are different, and the front load and the back load of the retaining wall base are balanced, so that the front load and the back load of the base are in a relative balanced state along with the change of the water level, and the retaining wall is favorable for lasting stability; the design of the retaining wall slope can reduce the direct impact of water flow on a wall body below the water surface, and the retaining wall is provided with ecological holes, so that a good attachment and living space is provided for microorganisms in water, and a water body purification effect is achieved; the scour prevention post has been set up between normal water line and the flood line, reduces and strikes the striking of the showy debris in the wall body and the water to the wall body because of the wave that rises, has strengthened the protection to the barricade greatly, and the setting of subsiding crack prevents to arouse the increase of wall body internal stress because of the settlement degree difference in different districts, and then influences the stability of barricade, and the steel bar structure that the anchor bar that the barricade set up and the stirrup constitute strengthens the tensile resistance and the stability of wall body greatly. The method has the advantages of easy construction, clear and definite construction flow, easy implementation, cheap and practical used materials, good economic effect and capability of well solving the problem of easy landslide due to large water level change.
Drawings
FIG. 1 is a schematic cross-sectional view of the retaining wall of the present invention;
FIG. 2 is a schematic structural view of a reinforcement cage of the retaining wall of the present invention;
FIG. 3 is a schematic structural diagram of the retaining wall of the present invention;
FIG. 4 is a schematic top view of the retaining wall base of the present invention;
FIG. 5 is a schematic top view of the retaining wall base of the present invention;
FIG. 6 is a schematic diagram of a first ecological cavity structure on the front surface of the retaining wall according to the present invention;
FIG. 7 is a schematic view of a second ecological cave structure on the front side of the retaining wall according to the present invention;
FIG. 8 is a schematic diagram of a third ecological cavity structure on the front side of the retaining wall according to the present invention;
fig. 9 is a schematic structural view of the front anti-erosion pillar of the retaining wall of the present invention.
Fig. 10 is another schematic view of the front anti-erosion post of the retaining wall of the present invention.
In the reference symbols: 1. a wall body; 2. an anti-scour post; 3. a base; 4. a front non-slip wall toe; 5. front anchor rod piles; 6. ecological holes; 601. a first ecological point; 602. a second ecological cave; 603. a third ecological cave, 7, backfill; 8. a rear antiskid wall toe; 9. a rear anchor rod pile; 10. anchoring ribs; 11. and (5) hooping.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-10, the anti-landslide ecological retaining wall based on self-weight balance of the embodiment includes a wall 1 and a base 3, the wall 1 and the base 3 are simultaneously poured into a whole, the surface of the wall 1 facing the water is the front, an ecological cave 6 is arranged below the normal water line in front of the wall 1, the ecological cave 6 can be made into different shapes, and an anti-scouring column 2 is arranged from the upper part of the normal water line to the lower part of the flood line; the back side of the wall 1 is filled with backfill 7.
The ecological retaining wall is characterized in that a reinforcing layer is arranged on the periphery of a pouring part of the ecological retaining wall, anchor bars 10 and stirrups 11 are arranged in the reinforcing layer, the anchor bars 10 are uniformly and parallelly arranged along a wall body 1, the stirrups 11 are bound on the anchor bars 10 along the vertical direction of the anchor bars 10, and the anchor bars 10 and the stirrups form a reinforcement cage structure; the steel reinforcement cage structure plays a tensile role, the compressive strength of concrete is high, but the tensile strength is very low, and the steel reinforcement cage structure is arranged, so that the effect of restraining a wall body is achieved, and the wall body can bear a strong horizontal force.
The bottom end of the base 3 is provided with a front anti-slip wall toe 4 and a rear anti-slip wall toe 8, the front anchor rod pile 5 is fixed on the front anti-slip wall toe 4, and the rear anchor rod pile 9 is fixed on the rear anti-slip wall toe 8.
The wall body 1 is made of C20-C35 concrete or rubble concrete, the C25 concrete is made of concrete with the compressive strength of 25MPa, the longitudinal section of the wall body 1 is trapezoidal, the rear surface of the wall body 1 is perpendicular to the base 3, the front surface of the wall body 1 is in a slope shape, the slope range is 60-75 degrees, the upper side length of the trapezoid of the longitudinal section of the wall body 1 is not less than 50cm, the base 3 is horizontally arranged and is in a cuboid shape, and the thickness of the base 3 is not less than 20 cm.
The front anti-skid wall toe 4 and the rear anti-skid wall toe 8 are cuboid-shaped and are symmetrically arranged at the lower end of the base 3 along the central axis of the base 3, the front anti-skid wall toe 4 and the rear anti-skid wall toe 8 are same in size and shape and are not less than 0.4m in height, the front width and the rear width of the front anti-skid wall toe 4 and the rear anti-skid wall toe 8 are greater than 1/5 of the front length and the rear length of the base 3, the front distance and the rear distance of the front anti-skid wall toe 4 and the rear anti-skid wall toe 8 are not greater than 2/5 of the front length and the rear length of the base 3, and the distance between the front anti-skid wall; the front anchor rod piles 5 are fixed along the central axis of the front anti-skid wall toe 4, so that the front anchor rod piles can be better connected with the base and the wall body; the 8 central axes of back antiskid wall toe are fixed along to back stock stake 9, and preceding antiskid wall toe 4 is perpendicular downwards with back antiskid wall toe from base 3 upper and lower thickness central plane respectively with back stock stake 9 to preceding stock stake 5, preceding stock stake 5 is not less than the 2/3 of wall body 1 height with back stock stake 9 length, the stock stake has certain elasticity, the more short rebound resilience is weaker, the rigidity is stronger, stock stake length is the 2/3 of wall body 1 height, existing stronger rigidity, there is fine elasticity again.
The length ratio of the front AB section to the rear CD section of the base 3 meets the following requirements: 2:1 < AB: CD < 4: 1. the design aims at balancing the front and rear loads of the retaining wall base, so that the front and rear loads of the base are in a relative balance state along with the change of the water level, and the retaining wall is favorable for lasting stability.
The top surface of the wall body 1 is made into a drainage slope not less than 4%, and the ecological cave 6 is made into one or a combination of a first ecological cave 601, a second ecological cave 602 and a third ecological cave 603.
The construction method of the landslide prevention ecological retaining wall based on the self-weight balance comprises the following steps:
the first step is as follows: setting a temporary water retaining wall or a water retaining plate, performing measurement lofting, and lofting according to the basic size of a designed drawing, wherein the size meets the specification requirement;
the second step is that: cleaning sundries at the bottom, performing mechanical segmental excavation by taking every 10m as a section, and when the distance from the height of the base to 3 elevation is 10-20cm, switching to manual cleaning, and checking the bearing capacity of the base, wherein the requirement is not lower than 200 KPa;
the third step: excavating front anti-skid wall toe 4 and rear anti-skid wall toe 8 toe pits, driving front anchor rod piles 5 and rear anchor rod piles 9, wherein the pile holes are slightly larger than the anchor rods, and fixing and anchoring;
the fourth step: manufacturing a base 3 and an anti-skid wall toe template, using a wood template support, battens and steel pipes as a support system according to the lofting size, temporarily supporting one side and the back side, correcting the verticality, pouring the base 3, a front anti-skid wall toe 4 and a rear anti-skid wall toe 8, vibrating by using an inserted 50 vibrating rod, maintaining after slurry is collected after pouring is finished, preventing impurities from polluting the surface, controlling the periphery of the base 3 to drain water, and removing the template after the strength requirement is met;
the fifth step: the method comprises the steps of performing measurement lofting on a wall body 1, erecting a template, temporarily fixing a template on one side and the back side, correcting verticality, fixing templates on other sides according to the template supported firstly, setting anchor bars and stirrups to form a reinforcement cage structure, then pouring the wall body 1 in layers, controlling the height of each layer within 150cm, setting ecological pits 6 and anti-scouring posts 2, performing secondary slurry collection on the wall body 1 after pouring is completed, and preventing cracks from appearing on the surface; setting a settlement joint at intervals of 20m or at corners of the wall body 1, wherein the width of the settlement joint is 20mm, and filling the settlement joint with wood boards;
and a sixth step: maintaining the wall body 1 after slurry collection is finished, preventing the surface from being polluted by impurities, removing the formwork after the strength requirement is met, and then covering and watering by geotextile until the strength requirement reaches 100%;
the seventh step: and after the strength of the wall body 1 meets the requirement, backfilling the backfill material 7 behind the wall, and backfilling each layer by 50cm layer by layer.
Example 1: the height of a wall body is 1m, the length of the upper surface of the wall body is 0.5m, the gradient is 60 degrees, C20 concrete, the width of a base is 4m, the front width and the rear width of an anti-skid wall toe are 1m, the distance between the front anti-skid wall toe and the rear anti-skid wall toe is 1.2m, the height of the anti-skid wall toe is 0.4m, the length of an anchor rod pile is 1.6m, the length of an AB section of the base is 1.6m, the length of a CD section is 0.6m, the thickness of the base is 0.2m, and the distance.
Example 2: the height of a wall body is 1m, the length of the upper surface of the wall body is 0.5m, the gradient is 75 degrees, C35 concrete is filled, the width of a base is 4m, the front and back widths of anti-skid wall toes are 0.8m, the distance between the front anti-skid wall toe and the back anti-skid wall toe is 1.2m, the height of the anti-skid wall toe is 0.4m, the length of an anchor rod pile is 1.5m, the length of an AB section of the base is 1.5m, the length of a CD section is 0.7m, the thickness of the base is 0.4m, and the distance between the left anti.
Example 3: the height of a wall body 1 is 2.5m, the length of the upper surface of the wall body 1 is 0.6m, the gradient is 70 degrees, C30 concrete, the width of a base is 4.5m, the front and back widths of anti-skid wall toes are 1m, the distance between the front anti-skid wall toe and the back anti-skid wall toe is 1.3m, the height of the anti-skid wall toe is 0.4m, the length of an anchor rod is 1.8m, the length of an AB section of the base is 2m, the length of a CD section is 0.5m, the thickness of the base is 0.4m, and the distance between the left anti-.
The working principle is as follows: the invention solves the problems that bank slope embankment with great water level change all the year round has a loose and soft geological structure, so the bank slope embankment has strict requirements on the base, meanwhile, earthwork of a land with easy landslide can impact the wall, running water can impact the wall, friction factors of the foundation and arrangement of anchor rods have complicated and many influence factors, in order to solve the problems, the invention is designed into a gravity retaining wall, the gravity of the retaining wall and the anchor rods are utilized to play a stabilizing role, meanwhile, the anti-skid toes arranged in front and back greatly reduce the possibility of translation of the retaining wall, anchor rod piles arranged in front and back with large length reduce the possibility of the retaining wall rotating and overturning around the anti-skid wall, the lengths of AB section and CD section of the base are unequal, the load of the retaining wall base in front and back is balanced, generally, the density of the earthwork is 1600-kg/m 3, the density of water is 1000-kg/m 3, supposing that the height of the wall body 1 is h, the perennial water level is h/4, the flood water level is 3h/4, the wall body 1, the base 3 and the wall toe are integrated as an ideal physical model, and when the water level is on the normal water level line, AB: CD is approximately equal to 6.5:1, when the water level is at the flood line, AB: CD is approximately equal to 2:1, the distance between the front wall toe and the rear wall toe, the influence of the anchor rod pile and the weight of the retaining wall, and the length ratio of AB to CD can be between 2 and 4, so that the front load and the rear load of the base are in a relative balance state along with the change of the water level, and the retaining wall is favorable for lasting stability. The design on barricade slope, slowly reduce the wall body that rivers direct impact is located the surface of water, the barricade has set up ecological cave, the microorganism in the feedwater provides better adhering to and living space, play the effect of purifying water, the scour prevention post has been set up between normal water line and the flood line, reduce and strike the wall body and the striking of the showy debris in the water to the wall body because of wind rises the wave, the periphery of wall body has set up the steel reinforcement cage structure and has played the tensile effect, the compressive strength height but the tensile strength of concrete is very low, set up the steel reinforcement cage structure, play the effect of restraint to the wall body, make it can bear stronger horizontal force, the protection to the barricade has been strengthened greatly, the setting of subsiding crack, prevent to arouse the increase of wall body internal stress because of the degree of subsiding of different land sections is different, and then influence the.
Claims (3)
1. The utility model provides an ecological barricade of landslide prevention based on dead weight is balanced which characterized in that: the retaining wall comprises a wall body (1) and a base (3), wherein the wall body (1) and the base (3) are poured into a whole at the same time, the wall body (1) faces the water surface in front, an ecological cave (6) is arranged below a normal water line in front of the wall body (1), the ecological cave (6) is made into different shapes, and an anti-scouring column (2) is arranged from the upper part of the normal water line to the lower part of a flood line; the back side of the wall body (1) is filled with backfill (7);
the ecological retaining wall is characterized in that a reinforcing layer is arranged on the periphery of a pouring part of the ecological retaining wall, anchor bars (10) and stirrups (11) are arranged in the reinforcing layer, the anchor bars (10) are uniformly and parallelly arranged along a wall body (1), the stirrups (11) are bound on the anchor bars (10) in the vertical direction of the anchor bars (10), and the anchor bars (10) and the stirrups (11) form a reinforcement cage structure;
a front anti-skid wall toe (4) and a rear anti-skid wall toe (8) are arranged at the bottom end of the base (3), a front anchor rod pile (5) is fixed on the front anti-skid wall toe (4), and a rear anchor rod pile (9) is fixed on the rear anti-skid wall toe (8);
the length ratio of the front end AB section to the rear end CD section of the base (3) meets the following requirements: 2:1 < AB: CD < 4: 1; the front and back widths of the front anti-skid wall toe (4) and the back anti-skid wall toe (8) are greater than 1/5 of the front and back length of the base (3), and the front and back widths of the anti-skid wall toes are 0.8 m; the front-back distance between the front anti-skid wall toe (4) and the rear anti-skid wall toe (8) is not more than 2/5 of the front-back length of the base (3), and the distance between the front anti-skid wall toe (4) and the rear anti-skid wall toe (8) is 1.2 m;
the front anti-skid wall toe (4) and the rear anti-skid wall toe (8) are arranged at the lower end of the base (3) in a cuboid shape and are symmetrically arranged along the central axis of the base (3), the front anti-skid wall toe (4) and the rear anti-skid wall toe (8) are the same in size and shape and are not less than 0.4m in height, and the distance between the front anti-skid wall toe (4) and the rear anti-skid wall toe (8) in the left-right adjacent direction is not more than 2 m; preceding stock stake (5) are fixed along preceding non-slip wall toe (4) the central axis, back stock stake (9) are fixed along back non-slip wall toe (8) the central axis, and preceding stock stake (5) and back stock stake (9) pass preceding non-slip wall toe (4) and back non-slip wall toe (8) perpendicular downwards from base (3) upper and lower thickness central plane respectively, preceding stock stake (5) and back stock stake (9) length are not less than wall body (1) 2/3 of height.
2. The ecological barricade of landslide prevention based on dead weight balance of claim 1, wherein: the wall body (1) is made of C20-C35 concrete or rubble concrete, the longitudinal section of the wall body (1) is trapezoidal, the rear surface of the wall body (1) is perpendicular to the base (3), the front surface of the wall body (1) is in a slope shape, the slope range is 60-75 degrees, the length of the upper side of the trapezoid of the longitudinal section of the wall body (1) is not less than 50cm, the base (3) is horizontally arranged and is in a cuboid shape, and the thickness of the base (3) is not less than 20 cm.
3. The ecological barricade of landslide prevention based on dead weight balance of claim 1, wherein: the top surface of the wall body (1) is made into a drainage slope not less than 4%, and the ecological cave (6) is made into one or a combination of a first ecological cave (601), a second ecological cave (602) and a third ecological cave (603).
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| CN201810444587.3A CN108570964B (en) | 2018-05-10 | 2018-05-10 | A kind of Ecological Retaining Wall and construction method based on bank slope supporting |
| CN201811412752.3A CN109610407B (en) | 2018-05-10 | 2018-05-10 | Ecological barricade of landslide prevention based on dead weight is balanced |
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| CN108570964A (en) | 2018-09-25 |
| CN109610407A (en) | 2019-04-12 |
| CN108570964B (en) | 2019-01-15 |
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