CN102704499A - Green slope reinforcing protection method using staggered platform bamboo-wood ladder lattice beams - Google Patents

Abstract

The invention is a green slope protection method for staggered bamboo and wood ladder lattice beams, which is characterized in that bamboo piles and wood chips are used in combination to protect the deep and shallow layers of the slope, and a kind of improved soil is used for cultivation and greening. The diameter of the pile is 5-11cm, the bamboo piles are pierced through, and the end of the soil is sharpened. The surface of the bamboo piles is engraved with grouting holes, and the grouting holes are evenly distributed. 1cm, the horizontal rib beam and vertical rib beam are made of concrete or reinforced concrete materials, and the construction is carried out. The bamboo-wood lattice beam is a prefabricated assembly structure. The diameter of the vertical bamboo rib columns is 8-11cm, and wood chips are used as horizontal wood supports between the vertical bamboo rib columns. Soil consists of local loam with amendments.

Description

A Green Slope Consolidation Protection Method for Staggered Bamboo and Wood Ladder Beams

technical field

The invention relates to a slope ecological greening protection method, which belongs to the field of civil engineering design and construction.

Background technique

With the large-scale investment in national infrastructure, a large number of expressway projects and provincial highway projects have been started in my country. The route selection of the highway crosses the green belt, forming a large number of exposed slopes, and the vegetation is destroyed or even degraded. The slope protection design scheme of highway engineering often adopts cement concrete structure. Although the purpose of engineering protection is achieved, the performance in ecological protection is not good, especially for rocky slopes, and ecological protection is a big problem. The purpose of the present invention is based on the consideration of environmental protection and greening, adopts non-polluting and ecological protection technology, carries out greening protection on rocky slopes and soil slopes, closes the slopes in the shortest possible time, promotes vegetation production, and restores the ecological environment.

Contents of the invention

The purpose of the present invention is to provide a green slope protection method for staggered bamboo and wood ladder lattice beams, which is used to solve the problem of ecological greening protection for soil slopes or rock slopes.

The technical solution of the present invention is a green slope protection method for staggered bamboo and wood ladder lattice beams, which is characterized in that bamboo piles (i.e. bamboo) are used as anchor rods, and bamboo piles and wood chips are used in combination for slope ecological slope consolidation , using improved soil for cultivation and greening to achieve combined protection of the deep and shallow layers of the slope. The diameter of the bamboo pile is 5-11cm. The distribution of the grouting holes along the length direction is not more than 40cm, the diameter of the grouting holes is not less than 1cm, the transverse rib beam and the vertical rib beam are made of concrete or reinforced concrete materials, and the construction is carried out, and the bamboo and wood lattice beam is a prefabricated assembled structure , bamboo is used as the vertical bamboo rib column, and the diamond-shaped lattice structure is formed by crossing wood chips. The diameter of the vertical bamboo rib column is 8-11cm. Bamboo ribs and columns are connected to support the weight of the diamond-shaped lattice structure. Improved soil is cultivated in the lattice structure. The improved soil is composed of local loam and amendments. The amendments include woody fibers, herbal fibers, and slow-acting fertilizers. The slow-acting fertilizers are nitrogen and phosphorus. Potassium mixed material, the mass ratio of nitrogen, phosphorus and potassium is 1:1:1, woody fiber, herbaceous fiber, slow-acting fertilizer and loam are mixed according to the mass ratio of 10:10:3:77, and the grass seeds are ryegrass, Tall fescue and bermudagrass are mixed in a mass ratio of 1:1:1. Specific protection techniques include the following steps:

(1) Excavate the side slope, brush the slope, and tidy up the slope surface. Drainage ditches are provided at the top and foot of the slope, and broken down platforms and drainage ditches are provided for graded slopes;

(2) Set out the wires, excavate the horizontal and vertical rib beam grooves, drill holes at the intersection of the horizontal and vertical rib beam grooves, place bamboo piles with grouting holes in the drill holes, put the tips into the holes, and the bamboo piles The depth of the piles should not be less than 60cm, and the length of the exposed bamboo piles on the slope should be equal to the horizontal and vertical rib beams, and the grout should be injected from the bottom of the bamboo piles to the slope;

(3) Cast in-situ concrete or reinforced concrete in the rib beam groove, and spray water to maintain the strength required by the specification. The vertical rib beam interval is 300cm-400cm, and the transverse rib beam interval is 180cm-240cm;

(4) Place the prefabricated and assembled bamboo-wood lattice beams in the lattice formed by the horizontal rib beams and the vertical rib beams;

(5) Mix nitrogen, phosphorus and potassium in a mass ratio of 1:1:1, and configure woody fiber, herbaceous fiber, slow-acting fertilizer and loam into improved soil in a mass ratio of 10:10:3:77. The ryegrass, tall fescue and bermudagrass are arranged with grass seeds according to the mass ratio of 1:1:1, and the improved soil and grass seeds are mixed and cultivated in the rhombus frame of bamboo and wood lattice beams;

(6) Cultivate the improved soil with mixed grass seeds. Construction is carried out from left to right and from top to bottom. After construction, spray appropriate amount of water, cover the improved soil with non-woven fabric, and trim regularly after the grass grows.

Advantages of the present invention:

The construction is simple, local materials are used, green and environmental protection, energy saving, and meet the requirements of ecological slope protection.

The scope of application of the present invention:

It is suitable for various deep and shallow soil slope greening protection projects encountered in civil engineering.

Description of drawings:

Figure 1 is a plan layout of bamboo and wood lattice beams. Wherein there are bamboo piles 1, wood chips 2, vertical bamboo rib columns 3, horizontal rib beams 4, vertical rib beams 5, and horizontal wooden supports 6.

Fig. 2 is the A-A sectional view of the floor plan of the bamboo-wood lattice beam. Wherein bamboo stake 1, grouting hole 7 are arranged.

Fig. 3 is an enlarged view of B of the floor plan layout of the bamboo-wood lattice beam. Wood chip 2, vertical bamboo rib column 3, horizontal wooden support 6 are arranged wherein.

Detailed ways:

Embodiment: the ecological greening protection method of a certain expressway soil slope is as follows,

① For a soil slope with a height of 6 meters, a slope ratio of 1:1, and a length of 30 meters, carry out surface ecological greening;

② Prepare nitrogen, phosphorus and potassium in a mass ratio of 1:1:1, and woody fibers, herbaceous fibers, slow-acting fertilizers and loam in a mass ratio of 10:10:3:77 to form improved soil. A total of about 30m ³ improved soil, mix ryegrass, tall fescue and bermudagrass with a mass ratio of 1:1:1 to prepare grass seeds, mix the grass seeds with a total of about 30kg, mix the improved soil and grass seeds for later use;

③ Slope brushing, setting out, drilling holes on the slope, installing bamboo piles with a diameter of 7cm, and grouting;

④ Excavate the transverse rib beam groove and the vertical rib beam groove, and carry out the concrete pouring construction;

⑤ Place the prefabricated and assembled bamboo-wood lattice beams in the rhombus frame formed by the transverse rib beams and vertical rib beams;

⑥ According to the construction sequence from left to right and from top to bottom, cultivate the mixed soil of improved soil and grass seeds, then water and cover with non-woven fabric.

Claims (1)

1. the green solid sloping means of defence of a faulting of slab ends bamboo wooden ladder lattice girder is characterized in that the bamboo stake as anchor pole, the bamboo stake is used in combination with wood chip carries out slope ecological Gu Po; Utilize conditioned soil to cultivate greening, bamboo stake diameter is 5-11cm, and the bamboo stake connects successively; The end that buries is fined away, and injected hole is carved with on bamboo stake surface, and injected hole evenly distributes; Injected hole is not more than 40cm along its length at interval, and the injected hole diameter is not less than 1cm, and laterally girt strip adopts concrete or Reinforced Concrete Materials with vertical girt strip; Carry out cast-in-place construction, bamboo wood lattice girder is the precast assembly structure, adopts bamboo as vertical bamboo rib post; Adopt the wood chip interleaved mode to constitute the rhombus lattice, vertical bamboo rib column diameter is 8-11cm, vertically adopts wood chip as laterally wood support between the bamboo rib post; Laterally wood supports with vertical bamboo rib post and is connected, and supports rhombus lattice weight, cultivates conditioned soil in the lattice; Conditioned soil is made up of local loam and modifying agent, and modifying agent comprises woody fiber, draft fiber, controlled-release fertilizer, and controlled-release fertilizer is the mixed material of nitrogen phosphorus potassium; Nitrogen phosphorus potassium mass ratio is 1: 1: 1; Woody fiber, draft fiber, controlled-release fertilizer are 10: 10: 3 with loam by mass ratio: 77 mix, and it is to mix at 1: 1: 1 by mass ratio that grass-seed is adopted rye grass, Festuca Arundinacea and Bermuda grass, and the concrete grammar that adopts the stake of this kind bamboo, wood chip and conditioned soil to protect comprises the steps:

(1) excavation slope, brush slope put domaticly, and top, slope and toe place are provided with the gutter, and the classification side slope is provided with stage for heaping debris and gutter;

(2) unwrapping wire; Excavation laterally with vertical girt strip groove, laterally hole with vertical girt strip groove crosspoint, settle the bamboo stake that has injected hole in the boring; The hole is put at the tip; Bamboo stake embedded depth is not less than 60cm, domaticly exposes bamboo stake partial-length and laterally girt strip, vertical girt strip are concordant, and beginning slip casting is to domatic from bamboo stake bottom;

(3) cast-in-situ concrete or steel concrete in the girt strip groove, and the intensity of wet curing to code requirement, vertical girt strip is spaced apart 300cm-400cm, and the cross rib distance between girders is 180cm-240cm;

(4) precast assembly is good bamboo wood lattice girder is placed in the grid of horizontal girt strip and vertical girt strip formation;

(5) be to mix at 1: 1: 1 nitrogen phosphorus potassium by mass ratio; Is 10: 10: 3 with woody fiber, draft fiber, controlled-release fertilizer and loam by mass ratio: 77 are configured to conditioned soil; Is 1: 1: 1 configuration grass-seed with rye grass, Festuca Arundinacea and Bermuda grass by mass ratio, conditioned soil is mixed with grass-seed cultivate in the bamboo wood lattice girder rhombus framework;

(6) cultivate the conditioned soil of mixing grass-seed, according to from left to right, construct from top to bottom, spray suitable quantity of water in construction back hides conditioned soil with nonwoven, treats regularly to prune after grass grows.

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