CN110424327B - Construction method of precast concrete ecological slope protection - Google Patents
Construction method of precast concrete ecological slope protection Download PDFInfo
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- CN110424327B CN110424327B CN201910535597.2A CN201910535597A CN110424327B CN 110424327 B CN110424327 B CN 110424327B CN 201910535597 A CN201910535597 A CN 201910535597A CN 110424327 B CN110424327 B CN 110424327B
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- 238000010276 construction Methods 0.000 title claims abstract description 15
- 239000011178 precast concrete Substances 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 55
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000004746 geotextile Substances 0.000 claims abstract description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 43
- 230000037431 insertion Effects 0.000 claims description 43
- 230000000670 limiting effect Effects 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 238000003466 welding Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 27
- 238000000746 purification Methods 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/129—Polyhedrons, tetrapods or similar bodies, whether or not threaded on strings
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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
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Revetment (AREA)
Abstract
The invention discloses a construction method of a precast concrete ecological slope protection, which comprises the following steps: a. paving a gravel material cushion layer; b. laying geotextile; c. backfilling a soil layer on the geotextile; d. assembling an ecological building block auxiliary positioning device; e. positioning the laying position of the first layer of ecological building blocks by adopting an ecological building block auxiliary positioning device; f. laying a first layer of ecological building blocks; g. laying ecological building blocks layer by layer; h. pouring a concrete layer; i. and filling soil into the planting holes of the laid ecological building blocks. The ecological slope protection device can improve the laying precision and integrity of the ecological slope protection, enables the ecological blocks of each layer to interact together, and enables the reinforcing steel bars to act on the auxiliary positioning devices of the ecological blocks, so that the ecological blocks distributed up and down are mutually embedded and connected, the influence of slight settlement of earthwork on the laying of the ecological blocks can be reduced, the laying smoothness of the ecological slope protection is further ensured, and the flood control effect, the ecological effect, the landscape effect and the self-purification effect of the ecological slope protection are improved.
Description
Technical Field
The invention belongs to the technical field of ecological restoration, and particularly relates to a construction method of a precast concrete ecological slope protection.
Background
Ecological restoration means stopping artificial interference on an ecological system to reduce load pressure, and evolving in an orderly direction depending on self-regulation capacity and self-organization capacity of the ecological system, or gradually restoring a damaged ecological system or developing the ecological system in a virtuous circle direction by utilizing the self-restoration capacity of the ecological system and assisting artificial measures; mainly aims at the restoration and reconstruction work of a natural ecosystem destroyed under the influence of natural mutation and human activities, and restores the original appearance of the ecosystem.
Ecological river restoration is one of the fields of ecological restoration, and ecological river restoration is currently carried out by adopting ecological revetments. The ecological bank protection refers to a river slope protection form for protecting the river slope by combining plants or plants with civil engineering; the river course slope protection device can prevent river bank collapse, and also has a river course slope protection form which enables river water and soil to mutually permeate, enhances the self-purification capacity of the river course and has a certain natural landscape effect. The ecological bank protection integrates flood control effect, ecological effect, landscape effect and self-cleaning effect, not only is a great progress of the bank protection engineering construction, but also will become the mainstream of the bank protection engineering construction in the future. In the prior art, ecological building blocks are paved on a slope surface in the construction process of ecological bank protection. But when laying ecological block, the easy skew design position in first layer ecological block laying position leads to whole ecological bank protection also to deviate the design position, and ecological block laying easily receives the influence of earthwork micro-amplitude settlement moreover, leads to ecological bank protection to lay the unevenness, influences the wholeness, weakens the flood control effect, ecological effect, view effect and the self-purification effect of ecological bank protection.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a construction method for precast concrete ecological slope protection, wherein the laying position of a first layer of ecological blocks is positioned through an ecological block auxiliary positioning device, the laying position of the first layer of ecological blocks is improved, the laying precision and the integrity of the ecological slope protection are improved, the ecological blocks of each layer are connected together through reinforcing steel bars, the ecological blocks of each layer are interacted, the reinforcing steel bars are further acted on the ecological block auxiliary positioning device, the ecological blocks distributed up and down are mutually embedded and connected, the influence of soil micro-amplitude settlement when the ecological blocks are laid can be reduced, the laying smoothness of the ecological slope protection is ensured, and the flood control effect, the ecological effect, the landscape effect and the self-cleaning effect of the ecological slope protection are improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of precast concrete ecological slope protection is characterized by comprising the following steps:
a. paving a gravel cushion layer:
1) and (4) surveying the site, removing obstacles on the ground, measuring and lofting, excavating earthwork by sections from top to bottom by adopting an excavator, and trimming slope gradient and compacting earthwork.
2) And laying a gravel cushion layer on the excavated basis and tamping.
b. The geotextile is laid by manual rolling, the cloth surface needs to be smooth, and then the geotextile is sewed, wherein the sewing width is generally more than 0.1 m.
c. And backfilling a soil layer on the geotextile and compacting.
d. Assembling an ecological building block auxiliary positioning device:
1) the adjusting base is slid into the horizontal plate, the protruding portion of the adjusting base slides into the groove of the horizontal plate, the external connection plate is installed on the fixing shaft of the positioning plate on the inner side of the ecological block building auxiliary plate, the external connection plate is fixed on the positioning plate through the locking nut, then the external connection plate slides into the mounting hole of the adjusting base, and the fixing bolt is screwed into the adjusting base and used for tightly abutting against the external connection plate.
2) The inserting rod passes through the through hole of the horizontal plate, and then the upper end and the lower end of the inserting rod are respectively screwed into the adjusting nuts. The position of the horizontal plate on the insertion rod can be adjusted by screwing the adjusting nut on the insertion rod, and then the setting height of the auxiliary plate for building the ecological blocks is adjusted, so that the auxiliary plate for building the ecological blocks can act on soil.
e. The laying position of the first layer of ecological building blocks is positioned by adopting an ecological building block auxiliary positioning device:
1) and measuring and lofting the soil layer backfilled on the geotextile, determining the laying position of the first layer of ecological building blocks, and marking the position of the back of the first layer of ecological building blocks.
2) Arranging two symmetrical ecological block auxiliary positioning devices at marks of positions of the back of a first layer of ecological blocks, wherein the ecological block auxiliary positioning devices are arranged in the steps of selecting compact insertion points, inserting insertion rods into soil corresponding to the insertion points, inserting the insertion rods on the same ecological block auxiliary positioning device into the soil to the same depth, adjusting two adjusting nuts of the same insertion rod to enable a horizontal plate to be adjusted in the vertical direction on the insertion rods, fixing the horizontal plate on the insertion rods through the adjusting nuts when the bottom of the ecological block masonry auxiliary plate is in contact with the soil, sliding an adjusting base on the horizontal plate to enable an external connection plate to slide in an installation hole of the adjusting base, rotating the ecological block masonry auxiliary plate on the external connection plate to enable the marks of the positions of the back of the ecological block auxiliary plate and the first layer of ecological blocks to be coincident, then, the locking nut is screwed on the outer connecting plate, the fixing bolt is screwed on the outer connecting plate, and the adjusting base is welded on the horizontal plate. Through adjusting the base and sliding on the horizontal plate, slide outer fishplate bar in the mounting hole of adjustment base, construct the accessory plate with ecological block simultaneously and rotate outer fishplate bar, can adjust the position that the accessory plate was built to ecological block according to the inserted bar interpolation position, the accessory plate is built to ecological block has the adjustability of certain limit, consequently can be according to the soft or hard degree of soil, selects the insertion point of inserted bar for the inserted bar avoids softer soil, guarantees that the inserted bar acts on soil steadily.
f. Laying a first layer of ecological building blocks:
1) the ecological blocks of the first layer with the designed number are attached to the left and the right, reinforcing steel bars are introduced between the ecological blocks to form the ecological blocks of the first layer, and the ecological blocks are connected with each other.
2) The first layer of ecological building blocks are integrally hoisted by a crane, and the position of the first layer of ecological building blocks is limited in the hoisting process, so that the first layer of ecological building blocks are hoisted to the central position of the area between the two symmetrically arranged ecological building block auxiliary positioning devices, and the first layer of ecological building blocks lean against the ecological building block laying auxiliary plate.
3) And steel plates are welded on the inner sides of the ecological building block masonry auxiliary plates of the two symmetrical ecological building block auxiliary positioning devices, and then the steel bars on the first layer of ecological building blocks are welded and connected with the steel plates.
g. Laying ecological building blocks layer by layer:
1) laying a second layer of ecological blocks, inserting the limiting bulges at the bottoms of the ecological blocks on the upper layer into the limiting grooves at the tops of the ecological blocks on the lower layer, laying the ecological blocks on the upper layer on the ecological blocks on the lower layer, and introducing reinforcing steel bars among the ecological blocks. In order to increase the connection strength between the upper ecological block and the lower ecological block, the upper ecological block can be built on the lower ecological block through concrete. And then welding another steel plate on the top of the steel plate at the lower layer, and welding and fixing the steel plate and the steel bar.
2) And paving the ecological blocks of the rest layer according to the paving method of the ecological blocks of the second layer, so that the overall height reaches the design requirement.
h. And a concrete pouring template is arranged on the outer side of the ecological building block auxiliary positioning device in an enclosing manner, a concrete layer is poured in the concrete pouring template, and the ecological building block auxiliary positioning device is arranged in the concrete layer.
i. And filling soil into the planting holes of the laid ecological building blocks, and planting plants.
Furthermore, in the step a, the layer thickness of the gravel material cushion layer is 10-15cm in the part 2), so that the sedimentation phenomenon of the soil is reduced.
And further, before the first layer of ecological blocks is laid in the step f, the ecological blocks are placed in a cleaning pool to be cleaned, so that the influence of residual soil on the ecological blocks on the laying of the ecological blocks is reduced.
Further, after the ecological block auxiliary positioning device positions the laying position of the first layer of ecological blocks, a rope is arranged between the fixing holes of the ecological block laying auxiliary plates of the two symmetrically arranged ecological block auxiliary positioning devices, the rope is in a tightening state, when the first layer of ecological blocks are laid, the rope acts on the back of the ecological blocks, and after the ecological blocks are laid layer by layer, the rope is detached from the fixing holes of the ecological block laying auxiliary plates. The first layer of ecological building blocks are all acted on the ropes, and the bearing capacity of the first layer of ecological building blocks can be improved.
Further, before the first layer of ecological blocks are integrally hung through a crane, a limiting device is installed beside the ecological block auxiliary positioning device on the right side, the longitudinal rod is inserted into soil, the adjusting pipe rotates on the threaded rod, the limiting plate at the outer end of the adjusting pipe is located at the laying position of the first layer of ecological blocks, then the first layer of ecological blocks are hung through the crane, the first layer of ecological blocks are hung on the soil along the limiting plate, the limiting device is installed beside the ecological block auxiliary positioning device on the left side, the longitudinal rod is inserted into the soil, the adjusting pipe rotates on the threaded rod, the limiting plate at the outer end of the adjusting pipe is tightly attached to the ecological blocks, and after the steel bars on the first layer of ecological blocks are welded with the steel plates, the limiting device is detached from the soil. Firstly, a limiting device is used for positioning the first layer of ecological building blocks in a hanging mode, so that the first layer of ecological building blocks can be guaranteed to be hung at a designed position, and the stability of the first layer of ecological building blocks in the hanging mode can be guaranteed; because the adjusting pipe rotates on the threaded rod, the length of the limiting device can be adjusted, and the limiting device can limit the first layer of ecological building blocks conveniently.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. according to the invention, the adjusting base slides on the horizontal plate, the outer connecting plate slides in the mounting hole of the adjusting base, and the ecological block laying auxiliary plate rotates on the outer connecting plate, so that the position of the ecological block laying auxiliary plate can be adjusted according to the insertion position of the insertion rod, and the ecological block laying auxiliary plate has a certain range of adjustability, therefore, the insertion point of the insertion rod can be selected according to the hardness and softness of soil, so that the insertion rod avoids softer soil, and the insertion rod is ensured to stably act on the soil. According to the ecological block laying auxiliary plate, the marks of the positions of the back sides of the ecological block laying auxiliary plate and the first layer of ecological blocks are overlapped, the first layer of ecological blocks is leaned against the ecological block laying auxiliary plate, the laying position of the first layer of ecological blocks can be positioned through the ecological block auxiliary positioning device, the first layer of ecological blocks is laid at the designed position, and the laying precision and the integrity of the ecological slope protection are improved. And the ecological building blocks of each layer all link together with the reinforcing bar for the ecological building blocks of each layer interact is in the same place, and the reinforcing bar welding makes the reinforcing bar act on ecological building block auxiliary positioning device on the inboard steel sheet of building by laying bricks or stones auxiliary plate, and the ecological building block that distributes from top to bottom each other inlays the connection, and the reducible ecological building block is influenced by earthwork's slight width settlement when laying, and then guarantees that ecological bank protection is laid smoothly, improves ecological bank protection's flood control effect, ecological effect, view effect and self-purification effect.
2. After the ecological building block auxiliary positioning device finishes positioning the laying position of the first layer of ecological building blocks, ropes are arranged between the fixing holes of the ecological building block laying auxiliary plates of the two symmetrically arranged ecological building block auxiliary positioning devices and are in a tightening state, when the first layer of ecological building blocks are laid, the ropes act on the back surfaces of the ecological building blocks, and after the ecological building blocks are laid layer by layer, the ropes are detached from the fixing holes of the ecological building block laying auxiliary plates. The first layer of ecological building blocks are all acted on the ropes, and the bearing capacity of the first layer of ecological building blocks can be improved.
3. Before putting the ecological building block of first layer wholly through the loop wheel machine is hung, install stop device beside the ecological building block auxiliary positioning device that is in the right side, insert the longitudinal rod in soil, rotate on the threaded rod through the adjusting pipe, make the limiting plate of adjusting pipe outer end be in the laying position department of the ecological building block of first layer, then hang through the loop wheel machine and put the ecological building block of first layer, make the ecological building block of first layer hang along the limiting plate and put on soil, then install stop device beside being in left ecological building block auxiliary positioning device, insert the longitudinal rod in soil, rotate on the threaded rod through the adjusting pipe, make the ecological building block is hugged closely to the limiting plate of adjusting pipe outer end, after reinforcing bar and the steel sheet welding on the ecological building block of first layer are accomplished, demolish stop device from soil. Firstly, a limiting device is used for positioning the first layer of ecological building blocks in a hanging mode, so that the first layer of ecological building blocks can be guaranteed to be hung at a designed position, and the stability of the first layer of ecological building blocks in the hanging mode can be guaranteed; because the adjusting pipe rotates on the threaded rod, the length of the limiting device can be adjusted, and the limiting device can limit the first layer of ecological building blocks conveniently.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a precast concrete ecological slope protection of the present invention;
FIG. 2 is a schematic structural view of an auxiliary positioning device for ecological blocks in the invention;
FIG. 3 is a schematic view showing the structure of the connection between the insert rod and the horizontal plate according to the present invention;
FIG. 4 is a schematic view of an adjusting base according to the present invention;
FIG. 5 is a schematic structural view of an auxiliary plate for laying ecological blocks in the present invention;
FIG. 6 is a schematic structural view of the first layer of ecological blocks positioned by the auxiliary ecological block positioning device according to the present invention;
FIG. 7 is a schematic structural diagram of the ecological building block of the invention in the first layer of laying;
FIG. 8 is a schematic structural view of the ecological block layer by layer laid according to the present invention;
FIG. 9 is a schematic structural view of the position limiting device of the present invention;
fig. 10 is a schematic structural view of the ecological block of the present invention.
In the figure, 1-horizontal plate; 2-adjusting the base; 3-a boss; 4-a groove; 5-building an auxiliary plate by ecological blocks; 6, positioning a plate; 7-a fixed shaft; 8-an external connection plate; 9-inserting a rod; 10-adjusting the nut; 11-a lock nut; 12-a fixing bolt; 13-a fixation hole; 14-mounting holes; 15-a rope; 16-an ecological building block auxiliary positioning device; 17-ecological building blocks; 18-a stop device; 19-steel plate; 20-reinforcing steel bars; 21-longitudinal bar; 22-a threaded rod; 23-an adjusting tube; 24-a limiting plate; 25-planting holes; 26-a limit groove; 27-a limit bump; 28-concrete layer.
Detailed Description
As shown in fig. 1 to 10, the construction method of the precast concrete ecological slope protection of the present invention is characterized by comprising the following steps:
a. paving a gravel cushion layer:
1) and (4) surveying the site, removing obstacles on the ground, measuring and lofting, excavating earthwork by sections from top to bottom by adopting an excavator, and trimming slope gradient and compacting earthwork.
2) And laying a gravel cushion layer on the excavated basis and tamping. The layer thickness of the gravel material cushion layer is 10-15cm, and the sedimentation phenomenon of soil is reduced.
b. The geotextile is laid by manual rolling, the cloth surface needs to be smooth, and then the geotextile is sewed, wherein the sewing width is generally more than 0.1 m.
c. And backfilling a soil layer on the geotextile and compacting.
d. Assembling the ecological building block auxiliary positioning device 16:
1) the adjusting base 2 is slid on the horizontal plate 1, and the convex part 3 of the adjusting base 2 slides into the groove 4 of the horizontal plate 1. And an outer connecting plate 8 is arranged on a fixed shaft 7 of a positioning plate 6 at the inner side of the ecological building block building auxiliary plate 5, and the outer connecting plate 8 is fixed on the positioning plate 6 by a locking nut 11. The external connection plate 8 is then slid into the mounting hole 14 of the adjustment base 2, and the adjustment base 2 is screwed with the fixing bolt 12, wherein the fixing bolt 12 is used for abutting against the external connection plate 8.
2) The insertion rod 9 is passed through the through hole of the horizontal plate 1, and then the upper end and the lower end of the insertion rod 9 are screwed into the adjusting nuts 10, respectively. The adjusting nut 10 is screwed on the inserting rod 9, so that the position of the horizontal plate 1 on the inserting rod 9 can be adjusted, and the setting height of the ecological block laying auxiliary plate 5 is further adjusted, and the ecological block laying auxiliary plate 5 can act on soil.
e. The laying position of the first layer of ecological building blocks 17 is positioned by adopting an ecological building block auxiliary positioning device 16:
1) and measuring and lofting the soil layer backfilled on the geotextile, determining the laying position of the first layer of ecological building blocks 17, and marking the position of the back of the first layer of ecological building blocks 17.
2) Two symmetrical ecological block auxiliary positioning devices 16 are arranged at the marks of the positions of the back surfaces of the ecological blocks 17 of the first layer. The installation steps of the ecological block auxiliary positioning device 16 are as follows: selecting a compacted insertion point, inserting the insertion rod 9 into soil corresponding to the insertion point, inserting the insertion rod 9 on the same ecological building block auxiliary positioning device 16 into the soil to the same depth, and adjusting two adjusting nuts 10 of the same insertion rod 9, so that the horizontal plate 1 is adjusted in the up-and-down position on the insertion rod 9. When the bottom of the ecological block laying auxiliary plate 5 is contacted with soil, the horizontal plate 1 is fixed on the insert rod 9 by the adjustment nut 10. And then, the adjusting base 2 slides on the horizontal plate 1, the outer connecting plate 8 slides in the mounting hole 14 of the adjusting base 2, and meanwhile, the ecological block laying auxiliary plate 5 rotates on the outer connecting plate 8, so that marks of positions where the back faces of the ecological block laying auxiliary plate 5 and the first layer of ecological blocks 17 are located coincide, then the locking nut 11 is screwed on the outer connecting plate 8, the fixing bolt 12 is screwed on the outer connecting plate 8, and meanwhile, the adjusting base 2 is welded on the horizontal plate 1. The adjusting base 2 slides on the horizontal plate 1, the outer connecting plate 8 slides in the mounting hole 14 of the adjusting base 2, meanwhile, the ecological block laying auxiliary plate 5 rotates on the outer connecting plate 8, the position of the ecological block laying auxiliary plate 5 can be adjusted according to the insertion position of the insertion rod 9, the ecological block laying auxiliary plate 5 has adjustability in a certain range, therefore, the insertion point of the insertion rod 9 can be selected according to the hardness degree of soil, the insertion rod 9 avoids softer soil, and the insertion rod 9 is guaranteed to stably act on the soil.
f. Laying a first layer of ecological building blocks 17:
1) the ecological building blocks 17 of the first layer with the designed number are attached to the left and the right, reinforcing steel bars 20 are led into the ecological building blocks 17 to form the ecological building blocks 17 of the first layer, and the ecological building blocks 17 are connected with each other.
2) The first layer of ecological blocks 17 are integrally hoisted by a crane, and in the hoisting process, the position of the first layer of ecological blocks 17 is limited, so that the first layer of ecological blocks 17 are hoisted to the central position of the area between the two symmetrically arranged ecological block auxiliary positioning devices 16, and the first layer of ecological blocks 17 lean against the ecological block building auxiliary plate 5.
3) And steel plates 19 are welded on the inner sides of the ecological block building auxiliary plates 5 of the two symmetrical ecological block auxiliary positioning devices 16, and then the steel bars 20 on the first layer of ecological blocks 17 are welded and connected with the steel plates 19.
Before ecological block 17 is laid, place ecological block 17 in wasing the pond, wash ecological block 17, reduce the influence that ecological block 17 was laid to remaining earth on ecological block 17.
g. Paving ecological building blocks 17 layer by layer:
1) laying a second layer of ecological blocks 17, inserting the limiting bulges 27 at the bottoms of the ecological blocks 17 on the upper layer into the limiting grooves 26 at the tops of the ecological blocks 17 on the lower layer, laying the ecological blocks 17 on the upper layer on the ecological blocks 17 on the lower layer, and introducing reinforcing steel bars 20 between the ecological blocks 17. In order to increase the connection strength between the upper ecological block 17 and the lower ecological block 17, the upper ecological block 17 may be laid on the lower ecological block 17 by concrete, and the connection strength between the upper ecological block 17 and the lower ecological block 17 is sufficient in the present invention, so that concrete may not be used. Then another steel plate 19 is welded on top of the steel plate 19 at the lower layer, and the steel plate 19 and the reinforcing steel bar 20 are welded and fixed.
2) And paving the ecological blocks 17 of the rest layer according to the paving method of the ecological blocks 17 of the second layer, so that the overall height reaches the design requirement.
h. Concrete pouring formworks are arranged around the outer sides of the ecological block auxiliary positioning devices 16, concrete layers 28 are poured in the concrete pouring formworks, and the ecological block auxiliary positioning devices 16 are arranged in the concrete layers 28.
i. And filling soil into the planting holes 25 of the laid ecological blocks 17, and planting plants.
After the ecological block auxiliary positioning device 16 finishes positioning the laying position of the first layer of ecological blocks 17, a rope 15 is arranged between the fixing holes 13 of the ecological block laying auxiliary plates 5 of the two symmetrically arranged ecological block auxiliary positioning devices 16, the rope 15 is in a tightening state, when the first layer of ecological blocks 17 are laid, the rope 15 acts on the back surfaces of the ecological blocks 17, and after the ecological blocks 17 are laid layer by layer, the rope 15 is detached from the fixing holes 13 of the ecological block laying auxiliary plates 5. The first layer of ecological blocks 17 are all acted on the ropes 15, and the bearing capacity of the first layer of ecological blocks 17 can be improved.
Before the first layer of ecological blocks 17 are hoisted by the crane, a limiting device 18 is arranged beside the auxiliary ecological block positioning device 16 on the right side. The longitudinal rod 21 is inserted into the soil, and the adjusting pipe 23 is rotated on the threaded rod 22, so that the limiting plate 24 at the outer end of the adjusting pipe 23 is positioned at the laying position of the ecological building block 17 at the first layer. Then, a first layer of ecological blocks 17 are hung by a crane, the first layer of ecological blocks 17 are hung on soil along limiting plates 24, then limiting devices 18 are installed beside the ecological block auxiliary positioning devices 16 on the left side, longitudinal rods 21 are inserted into the soil, adjusting pipes 23 rotate on threaded rods 22, the limiting plates 24 at the outer ends of the adjusting pipes 23 are made to be tightly attached to the ecological blocks 17, and after the steel bars 20 on the first layer of ecological blocks 17 are welded with steel plates 19, the limiting devices 18 are detached from the soil. Firstly, a limiting device 18 is used for positioning the first layer of ecological building blocks 17 in a hanging mode, so that the first layer of ecological building blocks 17 can be guaranteed to be hung at a designed position, and the stability of the first layer of ecological building blocks 17 in the hanging mode can be guaranteed; since the adjusting pipe 23 rotates on the threaded rod 22, the length of the limiting device 18 can be adjusted, and the limiting effect of the limiting device 18 on the first layer of ecological building blocks 17 is facilitated.
According to the invention, the adjusting base 2 slides on the horizontal plate 1, the outer connecting plate 8 slides in the mounting hole 14 of the adjusting base 2, the ecological block building auxiliary plate 5 rotates on the outer connecting plate 8, the position of the ecological block building auxiliary plate 5 can be adjusted according to the insertion position of the insertion rod 9, and the ecological block building auxiliary plate 5 has a certain range of adjustability, so that the insertion point of the insertion rod 9 can be selected according to the hardness degree of soil, so that the insertion rod 9 avoids softer soil, and the insertion rod 9 is ensured to stably act on the soil. According to the ecological block laying auxiliary plate, the marks of the positions of the backs of the ecological block laying auxiliary plate 5 and the first layer of ecological blocks 17 are overlapped, then the first layer of ecological blocks 17 lean against the ecological block laying auxiliary plate 5, the laying position of the first layer of ecological blocks 17 can be positioned through the ecological block auxiliary positioning device 16, the first layer of ecological blocks 17 is laid at the designed position, and the laying precision and integrity of the ecological slope protection are improved. And the ecological building blocks 17 of each layer all link together with reinforcing bar 20 for the ecological building blocks 17 of each layer interact together, reinforcing bar 20 welds on the inboard steel sheet 19 of ecological building block masonry auxiliary plate 5, make reinforcing bar 20 act on ecological building block auxiliary positioning device 16, and the ecological building blocks 17 of upper and lower distribution are each other inlayed and are connected, can reduce ecological building blocks 17 and subside the influence by the earthwork slightly when laying, and then guarantee that ecological bank protection is laid smoothly, improve the flood control effect, ecological effect, view effect and the self-purification effect of ecological bank protection.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (5)
1. A construction method of precast concrete ecological slope protection is characterized by comprising the following steps:
a. paving a gravel cushion layer:
1) surveying a site, removing obstacles on the ground, measuring and lofting, excavating earthwork by sections from top to bottom by adopting an excavator, and trimming slope and compacting the earthwork;
2) laying a gravel material cushion layer on the excavated basis and tamping;
b. laying geotextile;
c. backfilling a soil layer on the geotextile, and compacting;
d. assembling an ecological building block auxiliary positioning device:
1) sliding an adjusting base on the horizontal plate, sliding a protruding part of the adjusting base into a groove of the horizontal plate, then installing an external connection plate on a fixing shaft of a positioning plate on the inner side of the ecological block building auxiliary plate, fixing the external connection plate on the positioning plate by using a locking nut, then sliding the external connection plate into a mounting hole of the adjusting base, and screwing a fixing bolt on the adjusting base, wherein the fixing bolt is used for tightly propping against the external connection plate;
2) the inserting rod penetrates through the through hole of the horizontal plate, and then the upper end and the lower end of the inserting rod are respectively screwed into the adjusting nuts;
e. the laying position of the first layer of ecological building blocks is positioned by adopting an ecological building block auxiliary positioning device:
1) measuring and lofting a soil layer backfilled on the geotextile, determining the laying position of the first layer of ecological building blocks, and marking the position of the back of the first layer of ecological building blocks;
2) arranging two symmetrical ecological block auxiliary positioning devices at marks of positions of the back of a first layer of ecological blocks, wherein the ecological block auxiliary positioning devices are arranged in the steps of selecting compact insertion points, inserting insertion rods into soil corresponding to the insertion points, inserting the insertion rods on the same ecological block auxiliary positioning device into the soil to the same depth, adjusting two adjusting nuts of the same insertion rod to enable a horizontal plate to be adjusted in the vertical direction on the insertion rods, fixing the horizontal plate on the insertion rods through the adjusting nuts when the bottom of the ecological block masonry auxiliary plate is in contact with the soil, sliding an adjusting base on the horizontal plate to enable an external connection plate to slide in an installation hole of the adjusting base, rotating the ecological block masonry auxiliary plate on the external connection plate to enable the marks of the positions of the back of the ecological block auxiliary plate and the first layer of ecological blocks to be coincident, then, the locking nut is screwed on the external connection plate, the fixing bolt is screwed on the external connection plate, and the adjusting base is welded on the horizontal plate;
f. laying a first layer of ecological building blocks:
1) clinging the ecological building blocks of the first layer in designed quantity from left to right, and introducing reinforcing steel bars among the ecological building blocks to form a first layer of ecological building blocks;
2) the first layer of ecological building blocks are integrally hoisted by a crane, and the position of the first layer of ecological building blocks is limited in the hoisting process, so that the first layer of ecological building blocks are hoisted to the central position of the area between two symmetrically arranged ecological building block auxiliary positioning devices, and the first layer of ecological building blocks lean against an ecological building block building auxiliary plate;
3) welding steel plates on the inner sides of the ecological block building auxiliary plates of the two symmetrical ecological block auxiliary positioning devices, and then welding and connecting the steel bars on the first layer of ecological blocks with the steel plates;
g. laying ecological building blocks layer by layer:
1) laying a second layer of ecological blocks, inserting a limiting bulge at the bottom of the upper layer of ecological blocks into a limiting groove at the top of the lower layer of ecological blocks, laying the upper layer of ecological blocks on the lower layer of ecological blocks, introducing reinforcing steel bars between the ecological blocks, welding another steel plate at the top of the lower layer of steel plates, and welding and fixing the steel plates and the reinforcing steel bars;
2) paving the ecological blocks of the rest layer according to the paving method of the ecological blocks of the second layer, so that the overall height reaches the design requirement;
h. a concrete pouring template is arranged on the outer side of the ecological building block auxiliary positioning device in a surrounding mode, a concrete layer is poured in the concrete pouring template, and the ecological building block auxiliary positioning device is arranged in the concrete layer;
i. and filling soil into the planting holes of the laid ecological building blocks, and planting plants.
2. The construction method of the precast concrete ecological slope protection according to claim 1, wherein: in the part 2) of the step a, the layer thickness of the gravel material cushion layer is 10-15 cm.
3. The construction method of the precast concrete ecological slope protection according to claim 1, wherein: and f, before the first layer of ecological building blocks is laid, placing the ecological building blocks into a cleaning pool, and cleaning the ecological building blocks.
4. The construction method of the precast concrete ecological slope protection according to claim 1, wherein: after the ecological building block auxiliary positioning device finishes positioning the laying position of the first layer of ecological building blocks, ropes are arranged between the fixing holes of the ecological building block laying auxiliary plates of the two symmetrically arranged ecological building block auxiliary positioning devices and are in a tightening state, when the first layer of ecological building blocks are laid, the ropes act on the back surfaces of the ecological building blocks, and after the ecological building blocks are laid layer by layer, the ropes are detached from the fixing holes of the ecological building block laying auxiliary plates.
5. The construction method of the precast concrete ecological slope protection according to claim 1, wherein: before putting the ecological building block of first layer wholly through the loop wheel machine is hung, install stop device beside the ecological building block auxiliary positioning device that is in the right side, insert the longitudinal rod in soil, rotate on the threaded rod through the adjusting pipe, make the limiting plate of adjusting pipe outer end be in the laying position department of the ecological building block of first layer, then hang through the loop wheel machine and put the ecological building block of first layer, make the ecological building block of first layer hang along the limiting plate and put on soil, then install stop device beside being in left ecological building block auxiliary positioning device, insert the longitudinal rod in soil, rotate on the threaded rod through the adjusting pipe, make the ecological building block is hugged closely to the limiting plate of adjusting pipe outer end, after reinforcing bar and the steel sheet welding on the ecological building block of first layer are accomplished, demolish stop device from soil.
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Denomination of invention: A Construction Method for Prefabricated Concrete Ecological Slope Protection Effective date of registration: 20231022 Granted publication date: 20210302 Pledgee: Zhejiang Panan Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Yong'an Engineering Consulting Group Co.,Ltd. Registration number: Y2023330002447 |
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