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CN-116378037-B - Novel concrete construction method

CN116378037BCN 116378037 BCN116378037 BCN 116378037BCN-116378037-B

Abstract

The invention relates to the field of constructional engineering, in particular to a novel concrete construction method which is suitable for greening slope protection, has good slope protection firmness and stable vegetation planting, and comprises the following steps of trimming, flattening and compacting a slope to be constructed; detecting slope gradient, slope area and slope flatness to regenerate a slope plan, digging a cylindrical pit at a connecting area, embedding the cylindrical pit into the cylindrical pit through a boring device, boring a stepped groove on the lower side wall of the cylindrical pit, knitting a reinforcing steel bar column with a cylindrical structure, embedding the reinforcing steel bar column into the boring device, enabling the lower part of the reinforcing steel bar column to bend and extend into the stepped groove through impacting the boring device, paving a first three-dimensional net layer on the compacted slope, pre-embedding anchor nails in soil which is arranged at the first mesh hole on the periphery of the compacted slope in advance, installing a template at the identified slope protection cement beam, knitting the reinforcing steel net layer in a mold cavity, selecting raw materials, configuring concrete, and pouring the concrete into the mold cavity in a layered manner.

Inventors

  • WANG QIAOYI
  • LIU QINGCHUN
  • WU WENDA
  • WANG XUEFANG
  • HUANG JUNPENG

Assignees

  • 福建路港（集团）有限公司

Dates

Publication Date
20260512
Application Date
20230330

Claims (6)

  1. 1. The concrete construction method is characterized by comprising the following steps of: 1) Trimming and flattening the slope to be constructed, removing protruding stones and sundries on the slope, watering the slope, and compacting; 2) Detecting slope gradient, slope area and slope flatness of a slope, generating a slope plan according to detection data, and drawing a slope protection cement beam distribution design diagram on the plan, wherein the slope protection cement beam comprises a plurality of first slope protection beams distributed side by side and a plurality of second slope protection beams distributed side by side, each first slope protection beam and each second slope protection beam are distributed in a crossing way, so that the first slope protection beam and the second slope protection beam enclose a plurality of openings with prismatic structures, and the crossing part of the first slope protection beam and the second slope protection beam forms a connecting area; 3) Marking distribution positions of the slope protection cement beams through lime powder in advance on a slope by executing design standards of a slope protection cement beam distribution design drawing, and digging cylindrical pits with depth of 60 cm-120 cm at a connection area; 4) Embedding the hole boring device into the cylindrical pit, and boring the side wall of the lower part of the cylindrical pit into a stepped groove; the working mode of the boring device is that the upper part of the hammering boring device drives the digging claw at the lower part of the boring device to extend outwards along the radial direction of the cylindrical pit, so that the side wall at the lower part of the cylindrical pit is bored with a stepped groove, the boring device is rotated for 5-8 degrees after being continuously hammered for 5-8 times, the digging claw brings the bored soil into the boring device, and the boring device is pulled out to bring the soil out of the cylindrical pit; 5) The reinforced bar column is woven into a cylindrical structure, the reinforced bar column is embedded into the boring device, and the lower part of the reinforced bar column is bent and extended into the stepped groove by striking the boring device; The steel bar column comprises an inner ring layer and an outer ring layer which are arranged in a concentric circle, wherein the inner ring layer comprises a plurality of first steel bars which are distributed side by side along the axis direction of the steel bar column and a first snare for fixing the first steel bars, the outer ring layer comprises a plurality of second steel bars which are distributed side by side along the axis direction of the steel bar column and a second snare for fixing the second steel bars, the first steel bars and the second steel bars are distributed in a staggered manner, the lower parts of the first steel bars and the second steel bars are bent and extended into the stepped groove, the free ends of the first steel bars are embedded into soil, and the bent first steel bars are distributed on the upper sides of the bent second steel bars; 6) Paving a first three-dimensional net layer on the compacted slope, wherein the first three-dimensional net layer is provided with a plurality of first meshes distributed in a matrix, and through holes are cut in the first three-dimensional net layer at positions corresponding to the cylindrical pits; 7) Welding and fixing the first three-dimensional net layer and each reinforcing steel bar column; 8) Pre-embedding anchors in soil which is arranged on the periphery side of the slope protection cement beams and is positioned at the first mesh holes through the distribution positions of the slope protection cement beams marked in the step 3, and installing templates at the marked slope protection cement beams so as to form casting mold cavities, wherein the templates are connected with the anchors through connecting components; 9) Braiding a reinforcing mesh layer in the die cavity; 10 Selecting raw materials, preparing concrete, and making a transportation plan according to the pouring time and the distance of the concrete; 11 Transporting the concrete to the slope to be constructed, stirring for 6-8 min before pouring to uniformly stir the concrete, pouring the concrete in a die cavity in layers, vibrating the concrete by using an inserted vibrator tightly, spraying water for curing within 15-20 h after the concrete pouring is finished, and continuously curing for 12 days.
  2. 2. The concrete construction method according to claim 1, wherein the first slope protection beams are distributed in an inclined manner, the inclination is 20-45 degrees, and the second slope protection beams are distributed in an inclined manner, and the inclination angle is 90-160 degrees.
  3. 3. The concrete construction method according to claim 2, wherein the first slope protection beams are distributed obliquely, the inclination is 30 degrees, and the second slope protection beams are distributed obliquely, and the inclination angle is 90 degrees.
  4. 4. The concrete construction method according to any one of claims 1 to 3, wherein the reinforcement mesh layer comprises longitudinal reinforcement bars distributed along the length direction of the first slope protection beam or the second slope protection beam, transverse reinforcement bars distributed along the width direction of the first slope protection beam or the second slope protection beam, and a second three-dimensional mesh layer, the longitudinal reinforcement bars comprise reinforcement units which are sequentially and continuously welded and connected, the reinforcement units located in the width direction are distributed in a staggered manner, the reinforcement units comprise a first part, a second part and a third part which is connected with the first part and the second part, an included angle between the first part and the third part is 90-120 degrees, an included angle between the second part and the third part is 90-120 degrees, two adjacent reinforcement units located in the length direction are welded and fixed with the second part of the other reinforcement unit through the first part of one reinforcement unit, two adjacent reinforcement units located in the vertical direction are welded and fixed with the third part through the second part of the first part and the third part of the other reinforcement unit, and the second three-dimensional mesh layer is distributed on the second three-dimensional mesh layer.
  5. 5. The concrete construction method of claim 1, wherein the concrete comprises 450-600 parts of cement, 20-40 parts of mineral powder, 80-90 parts of fly ash, 15-25 parts of polycarboxylic acid additive, 800-1000 parts of stone and 700-900 parts of sand.
  6. 6. The method of constructing concrete according to claim 1, wherein in the step 11, each layer of concrete is poured in 25cm to 35cm in the layered pouring, the second layer of concrete is poured before the first layer of concrete is primarily solidified, and the free falling height of the second layer of concrete is not more than 0.5m.

Description

Novel concrete construction method Technical Field The invention relates to the field of constructional engineering, in particular to a novel concrete construction method. Background The slope protection of the common hillside land is greatly more than that of a slope surface, cement concrete is paved on the slope surface so as to strengthen the slope surface and prevent rain wash, and the slope surface is an artificial face image of bare land to destroy the ecology of the nature although the slope surface is strengthened and the rain wash is prevented. Chinese patent application number 200510093007.3 discloses a greening concrete construction method which comprises the steps of a) rectifying a slope, b) paving a three-dimensional net on the slope, c) reinforcing the three-dimensional net by using steel bars and anchors, d) paving concrete on the slope paved with the three-dimensional net, e) spraying mixed planting base materials on the concrete, and f) planting and maintaining. The grass seeds of the living green oil can grow on the reinforced concrete slope protection with a strong structure, so that the grass seeds have the effect of greening and beautifying landscapes and have the effect of water and soil conservation. However, the soil on the slope is covered under the concrete due to the fact that the soil is fixed on the slope through the three-dimensional net and the concrete is paved, the soil layer on the upper side of the concrete is thinner due to the mode of spraying the mixed plant growing base material on the concrete, planted vegetation is not rooted deeply and cannot form a good fixing effect, once larger rainwater is used for flushing, vegetation is caused to fall off, the vegetation is planted on the concrete for a long time, corrosion of the concrete is easy to cause, the strength of the concrete is reduced, and meanwhile, the vegetation needs to be maintained regularly, so that convenience is relatively poor. Disclosure of Invention Therefore, the invention provides a novel concrete construction method which is suitable for greening slope protection, has good slope protection firmness and is stable in vegetation planting. In order to achieve the above purpose, the present invention adopts the following technical scheme: A novel concrete construction method comprises the following steps: 1) Trimming and flattening the slope to be constructed, removing protruding stones and sundries on the slope, watering the slope, and compacting; 2) Detecting slope gradient, slope area and slope flatness of a slope, generating a slope plan according to detection data, and drawing a slope protection cement beam distribution design diagram on the plan, wherein the slope protection cement beam comprises a plurality of first slope protection beams distributed side by side and a plurality of second slope protection beams distributed side by side, each first slope protection beam and each second slope protection beam are distributed in a crossing way, so that the first slope protection beam and the second slope protection beam enclose a plurality of openings with prismatic structures, and the crossing part of the first slope protection beam and the second slope protection beam forms a connecting area; 3) Marking distribution positions of the slope protection cement beams through lime powder in advance on a slope by executing design standards of a slope protection cement beam distribution design drawing, and digging cylindrical pits with depth of 60 cm-120 cm at a connection area; 4) Embedding the hole boring device into the cylindrical pit, and boring the side wall of the lower part of the cylindrical pit into a stepped groove; 5) The reinforced bar column is woven into a cylindrical structure, the reinforced bar column is embedded into the boring device, and the lower part of the reinforced bar column is bent and extended into the stepped groove by striking the boring device; 6) Paving a first three-dimensional net layer on the compacted slope, wherein the first three-dimensional net layer is provided with a plurality of first meshes distributed in a matrix, and through holes are cut in the first three-dimensional net layer at positions corresponding to the cylindrical pits; 7) Welding and fixing the first three-dimensional net layer and each reinforcing steel bar column; 8) Pre-embedding anchors in soil which is arranged on the periphery side of the slope protection cement beams and is positioned at the first mesh holes through the distribution positions of the slope protection cement beams marked in the step 3, and installing templates at the marked slope protection cement beams so as to form casting mold cavities, wherein the templates are connected with the anchors through connecting components; 9) Braiding a reinforcing mesh layer in the die cavity; 10 Selecting raw materials, preparing concrete, and making a transportation plan according to the pouring time and the distance of the concrete; 11 Transpo