阅读说明：本技术 一种淤泥质土支撑梁垫层施工方法 (Construction method for mucky soil support beam cushion ) 是由 郁志伟 冯志新 何志军 李礼强 孙志国 洪重诺 罗稳周 邵俊涛 孟伟 高睿 马鹏 于 2021-07-24 设计创作，主要内容包括：本发明公开了支撑梁垫层施工技术领域,具体为一种淤泥质土支撑梁垫层施工方法,包括具体步骤如下：S1,测量放线：根据设计图纸及现场情况测量放线,标出支撑梁和垫层区域位置,其中垫层两侧比梁宽100mm；S2,清理标出支撑梁和垫层区域位置的淤泥质土,并在标出支撑梁和垫层区域位置外侧放置挡板部件；S3,地基处理：在标出的垫层区域填压地基部件,利用现场碎石混凝土或制作水泥土混入淤泥质土中并压实,进行地基处理；S4,基地整平：对垫层区域填压的地基部件进行压实和整平处理,本发明的有益效果是：解决了淤泥质土垫层施工后的不均匀沉降,确保了垫层的平整度,保证了垫层的施工质量和后续支撑梁的顺利施工,进而保证了基坑工程的顺利进行。(The invention discloses the technical field of support beam cushion layer construction, in particular to a mucky soil support beam cushion layer construction method, which comprises the following steps: s1, measuring and setting out: paying off according to a design drawing and field condition measurement, and marking the positions of a support beam and a cushion layer area, wherein the width of two sides of the cushion layer is 100mm larger than that of the beam; s2, cleaning the mucky soil with the positions of the support beams and the cushion areas marked out, and placing baffle plates outside the positions of the support beams and the cushion areas marked out; s3, foundation treatment: filling foundation components in the marked cushion layer area, mixing in mucky soil by utilizing on-site gravel concrete or cement soil prepared, compacting and carrying out foundation treatment; s4, base leveling: the invention has the beneficial effects that the compacted and leveled foundation component of the bedding zone is compacted and leveled: the problem of uneven settlement after the construction of the mucky soil cushion is solved, the flatness of the cushion is ensured, the construction quality of the cushion and the smooth construction of a subsequent supporting beam are ensured, and further the smooth proceeding of foundation pit engineering is ensured.)

1. A mucky soil support beam cushion layer construction method is characterized in that: the method comprises the following specific steps:

s1, measuring and setting out: paying off according to a design drawing and field condition measurement, and marking the positions of a support beam and a cushion layer area, wherein the width of two sides of the cushion layer is 100mm larger than that of the beam;

s2, cleaning the mucky soil with the positions of the support beams and the bedding areas marked out, and placing baffle plates (101) outside the positions of the support beams and the bedding areas marked out;

s3, foundation treatment: filling foundation components (301) in the marked cushion layer area, mixing in mucky soil by utilizing on-site gravel concrete or cement soil, compacting and carrying out foundation treatment;

s4, base leveling: compacting and leveling foundation components (301) compacted in the bedding zone, carrying out layered compacting and grading treatment according to sizes when the foundation is compacted, and compacting and leveling each layer by using a vibrating plate compactor;

s5, finding the height, and popping the horizontal control line: measuring and paying off, and finding out a cushion layer elevation and a horizontal control line;

s6, formwork: supporting a formwork supporting component (201) at the upper end of the leveled and compacted foundation component (301) according to the cushion layer elevation and a horizontal control line, and paving concrete in the formwork supporting component (201) according to the elevation;

s7, leveling: paving the upper surface of the laid concrete;

s8, maintenance: and (3) performing regular maintenance on the laid concrete, and removing the formwork supporting part (201).

2. The mucky soil support beam mat construction method as claimed in claim 1, wherein: baffle part (101) includes bottom plate (1), bottom plate (1) is placed and is marked a supporting beam and the regional position outside of bed course, bottom plate (1) upper end is equipped with riser (2), riser (2) are located bottom plate (1) upper end inboard, riser (2) bottom fixed mounting has the one end of hinge (11), hinge (11) other end fixed mounting has in bottom plate (1) upper end, through-hole (6) have been seted up on the lateral wall of bottom plate (1) inner, through-hole (6) interpolation has support column (4), support column (4) upper end fixed mounting has fastener (5), fastener (5) articulate on riser (2) upper end lateral wall.

3. The mucky soil support beam mat construction method as recited in claim 2, wherein: the connecting device is characterized in that a connector (3) is fixedly mounted on the side wall of the upper end of the vertical plate (2), two groups of connectors (3) are arranged, and the connectors (3) are respectively located at two ends of the upper side of the vertical plate (2).

4. The mucky soil support beam mat construction method as claimed in claim 1, wherein: foundation part (301) includes ground one (7), ground one (7) are laid at baffle part (101) inboardly, ground two (8) have been laid to ground one (7) upper end, ground three (9) have been laid to ground two (8) upper end, ground four (10) have been laid to ground three (9) upper end.

5. The mucky soil support beam mat construction method as recited in claim 4, wherein: the block diameters of the waste concrete adopted by the first foundation (7), the second foundation (8), the third foundation (9) and the fourth foundation (10) are respectively 5-20 mm, 20-40 mm, 40-80 mm and 80-120 mm.

6. The mucky soil support beam mat construction method as claimed in claim 1, wherein: the formwork supporting part (201) comprises a first formwork (12), the first formwork (12) is provided with two groups, a connector (13) is formed in the inner side of one end of the first formwork (12), a second formwork (14) is connected between the first formwork (12), one end of the second formwork (14) is connected with the connector (13), and the other end of the second formwork (14) is connected with the side wall of the first formwork (12).

7. The mucky soil support beam mat construction method as recited in claim 6, wherein: the fixing rod (15) is connected to the outer wall of the first template (12), a connecting groove (16) is formed in the upper side of the outer end of the fixing rod (15), a built-in threaded hole (22) is formed in the outer side of the connecting groove (16), a through hole (21) is formed in the side wall of the fixing rod (15), and the fixing rod (15) is fixedly installed on the outer wall of the first template (12) through the through hole (21) and a bolt.

8. The mucky soil support beam underlayment construction method as recited in claim 7, wherein: connecting rod (17) have been interpolated in spread groove (16), connecting rod (17) inner lateral wall and template two (14) outer wall connection, the lateral wall of both ends both sides has stopper (18) through bolt fixed mounting about connecting rod (17), stopper (18) are located the spread groove (16) outside.

9. The mucky soil support beam underlayment construction method as recited in claim 7, wherein: dead lever (15) upper end is connected with dog (19), dog (19) are located spread groove (16) and connecting rod (17) top, dog (19) one end is through pivot (20) swing joint in dead lever (15) upper end, the dog (19) other end is connected with hand and twists bolt (23), hand is twisted bolt (23) and is passed dog (19) lateral wall and be connected with built-in screw hole (22).

Technical Field

The invention relates to the field of support beam cushion layer construction, in particular to a mucky soil support beam cushion layer construction method.

Background

The mucky soil has the characteristics of low liquid limit, low permeability and difficult drainage and consolidation, is easy to liquefy into silt when meeting water, particularly in rainy seasons, the bottom of a foundation pit is full of silt due to continuous rainwater, and even if the effect of the foundation pit on precipitation is achieved, the soil with the depth of about 300mm at the shallow part of the pit bottom is still soft.

The prior art has the following defects: the existing mucky soil support beam cushion layer construction method is difficult to ensure the flatness of the cushion layer, the cushion layer sinks unevenly in the process of laying and maintaining the foundation pit support beam cushion layer, and a height difference of 10-15 mm occurs locally on a 150mm thick concrete cushion layer seriously, so that the pouring of a subsequent support beam and the foundation pit excavation progress are seriously influenced.

Therefore, it is necessary to invent a construction method of a mucky soil support beam cushion.

Disclosure of Invention

Therefore, the invention provides a mucky soil support beam cushion layer construction method, which comprises the steps of cleaning mucky soil at the positions of a support beam and a cushion layer, placing a baffle plate part at the outer sides of the support beam and the cushion layer, filling and pressing a foundation part in the baffle plate part, and installing a formwork part at the upper end of the foundation part, so as to solve the problems that the flatness of the cushion layer is difficult to ensure, the cushion layer sinks unevenly, and the pouring of the subsequent support beam and the excavation progress of a foundation pit are influenced.

In order to achieve the above purpose, the invention provides the following technical scheme: a mucky soil support beam cushion layer construction method comprises the following specific steps:

s1, measuring and setting out: paying off according to a design drawing and field condition measurement, and marking the positions of a support beam and a cushion layer area, wherein the width of two sides of the cushion layer is 100mm larger than that of the beam;

s2, cleaning the mucky soil with the positions of the support beams and the cushion areas marked out, and placing baffle plates outside the positions of the support beams and the cushion areas marked out;

s3, foundation treatment: filling foundation components in the marked cushion layer area, mixing in mucky soil by utilizing on-site gravel concrete or cement soil prepared, compacting and carrying out foundation treatment;

s4, base leveling: compacting and leveling foundation components compacted in the cushion layer area, carrying out layered compacting and grading treatment according to sizes when the foundation is compacted, and compacting and leveling each layer by using a vibrating plate compactor;

s5, finding the height, and popping the horizontal control line: measuring and paying off, and finding out a cushion layer elevation and a horizontal control line;

s6, formwork: supporting a formwork supporting part at the upper end of the leveled and compacted foundation part according to the bed course elevation and the horizontal control line, and paving concrete in the formwork supporting part according to the elevation;

s7, leveling: paving the upper surface of the laid concrete;

s8, maintenance: and (5) carrying out regular maintenance on the laid concrete, and dismantling the formwork supporting part.

Preferably, the baffle part comprises a bottom plate, the bottom plate is placed outside the marked support beam and the cushion layer region, a vertical plate is arranged at the upper end of the bottom plate and is located on the inner side of the upper end of the bottom plate, one end of a hinge is fixedly mounted at the bottom end of the vertical plate, the other end of the hinge is fixedly mounted at the upper end of the bottom plate, a through hole is formed in the side wall of the inner end of the bottom plate, a support column is inserted into the through hole, a hanging fastener is fixedly mounted at the upper end of the support column, and the hanging fastener is hung on the side wall of the upper end of the vertical plate.

Preferably, the connectors are fixedly mounted on the side wall of the upper end of the vertical plate and are two groups, and the connectors are respectively located at two ends of the upper side of the vertical plate.

Preferably, the foundation part includes foundation one, foundation one is laid at the baffle part inboard, foundation two has been laid to foundation one upper end, foundation three has been laid to foundation two upper ends, foundation four has been laid to foundation three upper ends.

Preferably, the diameters of the waste concrete blocks adopted by the first foundation, the second foundation, the third foundation and the fourth foundation are respectively 5-20 mm, 20-40 mm, 40-80 mm and 80-120 mm.

Preferably, the formwork supporting part comprises a first formwork, the first formwork is provided with two groups, a connector is arranged on the inner side of one end of each formwork, a second formwork is connected between the first formworks, one end of each second formwork is connected with the connector, and the other end of each second formwork is connected with one side wall of each formwork.

Preferably, the outer wall of the first template is connected with a fixed rod, a connecting groove is formed in the upper side of the outer end of the fixed rod, a built-in threaded hole is formed in the outer side of the connecting groove, a through hole is formed in the side wall of the fixed rod, and the fixed rod is fixedly installed on the outer wall of the first template through the through hole and a bolt.

Preferably, the connecting rod is inserted in the connecting groove, the inner side wall of the connecting rod is connected with the outer wall of the template, the side walls of the left and right ends of the connecting rod are fixedly provided with limit blocks through bolts, and the limit blocks are positioned outside the connecting groove.

Preferably, the upper end of the fixed rod is connected with a stop block, the stop block is positioned above the connecting groove and the connecting rod, one end of the stop block is movably connected to the upper end of the fixed rod through a rotating shaft, the other end of the stop block is connected with a hand-screwed bolt, and the hand-screwed bolt penetrates through the side wall of the stop block and is connected with the built-in threaded hole.

The invention has the beneficial effects that: 1. the uneven settlement of the mucky soil cushion layer after construction is solved, the flatness of the cushion layer is ensured, the construction quality of the cushion layer and the smooth construction of a subsequent supporting beam are ensured, and further the smooth operation of foundation pit engineering is ensured;

2. when the baffle plate part needs to be taken out after construction is finished, one end of the steel cable is connected to the connecting head, the other end of the steel cable is connected to the crane, the supporting column is pulled out of the through hole through the hanging fastener, the bottom plate can rotate at the end of the vertical plate, and the vertical plate and the bottom plate can be easily pulled out of mucky soil by starting the crane;

3. the first template and the second template are connected with each other, and the first template and the second template are fixedly connected with each other through the fixing rod and the connecting rod, so that the cushion layer template is quickly and tidily supported, long-time mold erecting in a narrow space of a worker is avoided, and the working efficiency of the worker and the quality of the mold erecting are improved.

Drawings

FIG. 1 is a schematic flow chart of a construction method provided by the present invention;

FIG. 2 is a schematic cross-sectional front view of the overall structure provided by the present invention;

FIG. 3 is a top view of the overall structure provided by the present invention;

FIG. 4 is a schematic view of a baffle member according to the present invention;

FIG. 5 is an enlarged view of the structure of area A in FIG. 4 according to the present invention;

FIG. 6 is a schematic structural view of a formwork member provided in the present invention;

FIG. 7 is a schematic view of a fixing rod structure provided in the present invention;

fig. 8 is an enlarged view of the structure of the region B in fig. 6 according to the present invention.

In the figure: the structure comprises a base plate 1, a vertical plate 2, a connector 3, a supporting column 4, a fastener 5, a through hole 6, a foundation I7, a foundation II 8, a foundation III 9, a foundation IV 10, a hinge 11, a template I12, a connector 13, a template II 14, a fixing rod 15, a connecting groove 16, a connecting rod 17, a limiting block 18, a stop block 19, a rotating shaft 20, a through hole 21, a threaded hole 22 arranged in the connecting rod 17, a bolt screwed by a hand 23, a baffle plate part 101, a formwork part 201 and a foundation part 301.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to the attached figures 1-5, the invention provides a mucky soil support beam cushion layer construction method, which comprises the following steps:

s1, measuring and setting out: paying off according to a design drawing and field condition measurement, and marking the positions of a support beam and a cushion layer area, wherein the width of two sides of the cushion layer is 100mm larger than that of the beam;

s2, cleaning the mucky soil with the positions of the support beams and the cushion areas marked out, and placing baffle plates 101 outside the positions of the support beams and the cushion areas marked out;

s3, foundation treatment: filling foundation components 301 in the marked cushion layer area, mixing the on-site crushed stone concrete or manufactured cement soil into the mucky soil, compacting, and performing foundation treatment;

s4, base leveling: compacting and leveling the foundation component 301 compacted in the cushion layer area, utilizing the waste concrete blocks scraped on site in the marked cushion layer area, grading according to size, filling the graded concrete blocks into the mucky soil in the cushion layer area, and tamping, wherein the treatment depth of the foundation is 300-400 mm below the elevation of the cushion layer, and if the foundation meets the conditions required by cushion layer laying, the foundation can be leveled in the next step; if construction waste such as site ground scrapping and waste concrete is deficient or a soil layer is still soft and difficult to reach a cushion layer laying condition after being mixed with graded concrete blocks, foundation treatment can be carried out again by adopting a method of mixing cement soil, each layer needs to be compacted and leveled by a vibration type flat plate tamper, a certain jumping height needs to be maintained when the vibration flat plate tamper jumps, when the vibration flat plate tamper reaches the same excitation force, the higher the working frequency of the flat plate tamper is, the smaller the required vibration mass is, and the lighter the whole machine mass is;

s5, finding the height, and popping the horizontal control line: measuring and paying off, finding out the elevation of the cushion layer, playing a horizontal control line, measuring and paying off according to a horizontal elevation line of +50cm on the wall, and measuring the elevation of the cushion layer and the horizontal control line;

s6, formwork: supporting a formwork supporting part 201 at the upper end of the leveled and compacted foundation part 301 according to the elevation of the cushion layer and a horizontal control line, paving concrete in the formwork supporting part 201 according to the elevation, pouring C20 concrete with the thickness of 150mm, troweling and compacting by using a wood trowel, wherein the cushion layer is 100mm wider than the beam;

s7, leveling: paving the upper surface of the laid concrete, checking the flatness by taking a horizontal marking line as a standard, shoveling off the height, and filling the concave part;

s8, maintenance: the laid concrete is periodically cured and the formwork section 201 is removed.

Further, the baffle plate part 101 comprises a bottom plate 1, the bottom plate 1 is placed outside the area where the support beam and the cushion layer are marked, the upper end of the bottom plate 1 is provided with a vertical plate 2, the vertical plate 2 is positioned inside the upper end of the bottom plate 1, the bottom end of the vertical plate 2 is fixedly provided with one end of a hinge 11, the other end of the hinge 11 is fixedly arranged at the upper end of the bottom plate 1, the inner side wall of the bottom plate 1 is provided with a through hole 6, a support post 4 is inserted in the through hole 6, the upper end of the support post 4 is fixedly provided with a hanging fastener 5, the hanging fastener 5 is hung on the side wall at the upper end of the vertical plate 2, specifically, the hinge 11 plays a role of enabling the vertical plate 2 to rotate at the upper end of the bottom plate 1, the through hole 6 plays a role of connecting the support post 4, the support post 4 plays a role of supporting the vertical plate 2, when mucky soil flows to the baffle plate part 101, mucky soil can firstly flow to the upper end of the bottom plate 1, a downward pressure is applied to the bottom plate 1, and enables the bottom plate 1 to support the vertical plate 2 more stably, when silt soil flows down riser 2, support column 4 plays and prevents that riser 2 from falling to 1 inboard of bottom plate, fastener 5 plays the effect of connecting support column 4 in riser 2 upper end, fastener 5 still plays the effect of preventing riser 2 from falling to the bottom plate outside simultaneously, fixed mounting has connector 3 on the 2 upper end lateral walls of riser, connector 3 is equipped with two sets ofly, connector 3 is located 2 upside both ends of riser respectively, connector 3 plays the effect of connecting the cable wire, connect cable wire one end on connector 3, connect the cable wire other end on the loop wheel machine, extract support column 4 from through-hole 6 through fastener 5, bottom plate 1 alright rotate at 2 lower extremes of riser, start the loop wheel machine, alright extract riser 2 and bottom plate 1 from silt soil easily.

Further, the foundation component 301 comprises a first foundation 7, the first foundation 7 is laid on the inner side of the baffle component 101, a second foundation 8 is laid on the upper end of the first foundation 7, a third foundation 9 is laid on the upper end of the second foundation 8, a fourth foundation 10 is laid on the upper end of the third foundation 9, the first foundation 7, the second foundation 8, the third foundation 9 and the fourth foundation 10 adopt waste concrete blocks with the diameters of 5-20 mm, 20-40 mm, 40-80 mm and 80-120 mm respectively, specifically, the adopted waste concrete blocks can reduce cost, grading and filling and leveling can prevent uneven settlement after construction of a mucky soil cushion layer, ensure the flatness of the cushion layer, ensure the construction quality of the cushion layer and subsequent smooth construction of a supporting beam, further ensure the smooth proceeding of foundation pit engineering, directly add 4% of cement and 20% of sand in a specified area for cement manufacturing, and only compaction.

Further, the formwork supporting part 201 comprises a first formwork 12, the first formwork 12 is provided with two groups, a connector 13 is formed in the inner side of one end of the first formwork 12, a second formwork 14 is connected between the first formwork 12, one end of the second formwork 14 is connected with the connector 13, the other end of the second formwork 14 is connected with the side wall of the first formwork 12, a fixing rod 15 is connected to the outer wall of the first formwork 12, a connecting groove 16 is formed in the upper side of the outer end of the fixing rod 15, a built-in threaded hole 22 is formed in the outer side of the connecting groove 16, a through hole 21 is formed in the side wall of the fixing rod 15, the fixing rod 15 is fixedly installed on the outer wall of the first formwork 12 through the through hole 21 and a bolt, specifically, the first formwork 12 and the second formwork 14 are connected with each other, the cushion formwork can be supported quickly and tidily, long-time formwork erection in a narrow space of a worker can be avoided, and the work efficiency of the worker and the quality of formwork erection are improved.

Further, connecting rod 17 has been inserted to spread groove 16, and the inner lateral wall of connecting rod 17 and the second 14 outer wall connections of template, the lateral wall of connecting rod 17 left and right sides both sides has stopper 18 through bolt fixed mounting, and stopper 18 is located the spread groove 16 outside, and is concrete, and connecting rod 17 plays the effect of laminating second 14 templates on template one 12, and stopper 18 plays the effect that restriction template one 12 removed, has guaranteed the quality of template frame.

Further, dead lever 15 upper end is connected with dog 19, dog 19 is located spread groove 16 and connecting rod 17 top, 19 one end of dog is through pivot 20 swing joint in dead lever 15 upper end, the dog 19 other end is connected with hand-screwed bolt 23, hand-screwed bolt 23 passes the dog 19 lateral wall and is connected with built-in screw hole 22, it is specific, dog 19 can rotate at dead lever 15 upper end level through pivot 20, hand-screwed bolt 23 plays and fixes dog 19 in the effect of dead lever 15 upper end, dog 19 plays the effect that restriction connecting rod 17 reciprocated in spread groove 16, prevent the effect that connecting rod 17 from dropping in spread groove 16.

The using process of the invention is as follows: the person skilled in the art measures the payoff by S1: paying off according to a design drawing and field condition measurement, and marking the positions of a support beam and a cushion layer area, wherein the width of two sides of the cushion layer is 100mm larger than that of the beam; s2, the silt soil of a supporting beam and the regional position of bed course is marked in the clearance, and place bottom plate 1 in a supporting beam and the regional position outside of bed course marked, be equipped with riser 2 in 1 upper end of bottom plate, riser 2 is located 1 upper end of bottom plate inboard, 2 bottom fixed mounting of riser have the one end of hinge 11, hinge 11 other end fixed mounting is in 1 upper end of bottom plate, through-hole 6 has been seted up on the lateral wall of 1 inner of bottom plate, 6 interpolations of through-hole have support column 4, 4 upper end fixed mounting of support column have fastener 5, fastener 5 articulates on 2 upper end lateral walls of riser, fixed mounting has connector 3 on 2 upper end lateral walls of riser, S3, ground treatment: paving a first foundation 7 on the inner side of the baffle plate part 101, paving a second foundation 8 at the upper end of the first foundation 7, paving a third foundation 9 at the upper end of the second foundation 8, paving a fourth foundation 10 at the upper end of the third foundation 9, mixing the foundation with on-site crushed stone concrete or manufactured cement soil into mucky soil and compacting, and performing foundation treatment, wherein the diameters of the adopted waste concrete blocks are 5-20 mm, 20-40 mm, 40-80 mm and 80-120 mm, and the cement soil is manufactured by directly adding 4% of cement and 20% of sand into a designated area and compacting; s4, base leveling: the ground part 301 of regional tamping of bed course carries out compaction and flattening processing, carries out the layering tamping and carries out the gradation processing according to the size when tamping the ground, and each layer all needs to carry out compaction and flattening with vibrating plate rammer, S5, looks for the elevation, plays horizontal control line: measuring and paying off, finding out the elevation of the cushion layer, controlling the level of the bullet, S6, and erecting a formwork: the upper end of a leveled and compacted foundation component 301 supports a formwork supporting component 201 according to the bed course elevation and the horizontal control line, the inner side of one end of a first formwork 12 is provided with a connecting port 13, a second formwork 14 is connected between the first formwork 12, one end of the second formwork 14 is connected with the connecting port 13, the other end of the second formwork 14 is connected with the side wall of the first formwork 12, the outer wall of the first formwork 12 is connected with a fixed rod 15, the upper side of the outer end of the fixed rod 15 is provided with a connecting groove 16, the outer side of the connecting groove 16 is provided with a built-in threaded hole 22, the side wall of the fixed rod 15 is provided with a through hole 21, the fixed rod 15 is fixedly arranged on the outer wall of the first formwork 12 through the through hole 21 and a bolt, a connecting rod 17 is inserted in the connecting groove 16, the side wall of the inner end of the connecting rod 17 is connected with the outer wall of the second formwork 14, the side walls of the left and right ends of the connecting rod 17 are fixedly provided with limit blocks 18 through the bolt, the limit blocks 18 are arranged on the outer side of the connecting groove 16, the upper end of the fixed rod 15 is connected with a stop block 19, dog 19 is located spread groove 16 and connecting rod 17 top, and dog 19 one end is passed through 20 swing joint of pivot in dead lever 15 upper end, and the dog 19 other end is connected with hand and twists bolt 23, and hand is twisted bolt 23 and is passed the dog 19 lateral wall and be connected with built-in screw hole 22, has supported the template after, concreting in the die cavity, and S7 makes level: and (3) paving the upper surface of the laid concrete, S8, maintaining: the laid concrete is periodically cured and the formwork section 201 is removed.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.