阅读说明：本技术 一种大面积变曲率足球场施工方法 (Construction method for large-area variable-curvature football field ) 是由 黄春生 王丽梅 赵楠 李娟� 张振禹 于 2020-12-03 设计创作，主要内容包括：本发明公开了一种大面积变曲率足球场施工方法,包括以下步骤：足球场整块透水混凝土层合理分成半圆区及矩形区,然后对半圆区的扇形块和矩形区进行分块,然后进行分区域分块浇筑。足球场沿长向中轴线往两边找坡,至半圆区从圆心向四周找坡,为控制好坡度,在透水混凝土层进行找坡,即把足球场分成4大块,分别为两块半圆区,中间矩形区按中轴线分成左右两块；然后半圆区以圆心为中心等分成6个扇形,中间左右两块矩形区域进行分块；每块混凝土浇筑时也必须确保坡度准确,当浇筑的混凝土强度达到要求后,再浇筑其他块透水混凝土,以保证混凝土找坡精确度。这一大面积变曲率足球场施工方法体系保证了足球场的场地精度准确控制。(The invention discloses a construction method of a large-area variable-curvature football field, which comprises the following steps: the whole permeable concrete layer of the football field is reasonably divided into a semicircular area and a rectangular area, then the sector blocks and the rectangular area of the semicircular area are partitioned, and then the partitioned and partitioned pouring is carried out. The football field is used for finding slopes towards two sides along the central axis in the longitudinal direction, and the slopes are found from the circle center to the periphery in the semicircular areas, so that the slope is controlled well, namely the football field is divided into 4 blocks which are respectively two semicircular areas, and the middle rectangular area is divided into a left block and a right block according to the central axis; then the rear half circle area is equally divided into 6 sectors by taking the circle center as the center, and the middle left rectangular area and the middle right rectangular area are divided into blocks; and when the strength of the poured concrete meets the requirement, other permeable concrete blocks are poured to ensure the accuracy of the concrete slope finding. The large-area variable-curvature football field construction method system ensures accurate field control of the football field.)

1. A construction method of a large-area variable-curvature football field is characterized by comprising the following steps:

(1) dividing a set football field area into a ring-shaped football field consisting of an upper semicircular area (1-1), a lower semicircular area (1-2) and a rectangular area (2) connected between the upper semicircular area and the lower semicircular area;

(2) leveling and plain soil compacting the football field area, and then sequentially laying a cement-stabilized macadam base layer and a macadam drainage layer on the plain soil compacting layer from bottom to top;

(3) on the gravel drainage layer, an upper semi-circle region and a lower semi-circle region of a football court region are respectively divided into six fan-shaped blocks, a first fan-shaped block (B1), a second fan-shaped block (B2), a third fan-shaped block (B3), a fourth fan-shaped block (B4), a fifth fan-shaped block (B5) and a sixth fan-shaped block (B6) are sequentially arranged from left to right, the rectangular regions are divided into 12 rows along the direction parallel to the longitudinal central symmetry axis of the annular football court, a row of regions, a second row of regions, a third row of regions, a fourth row of regions, a fifth row of regions, a sixth row of regions, a seventh row of regions, an eighth row of regions, a ninth row of regions, a tenth row of regions, an eleventh row of regions and a twelfth row of regions are sequentially arranged from left to right, and a reserved channel (3) is arranged in the middle of the rectangular football court along the direction parallel to the transverse symmetry axis of the annular football court;

(4) respectively supporting edge side steel templates at a transverse boundary formed by the intersection of a first row area and a twelfth row area of the rectangular area with the reserved channel, a transverse boundary formed by the intersection of the first row area and the lower semicircular area and a left longitudinal boundary and a right longitudinal boundary of the first row area and the twelfth row area 2, respectively supporting a first steel template at the left longitudinal boundary and the right longitudinal boundary of the sixth row area and the seventh row area and the transverse boundary, wherein the highest elevation of the first steel template is a circle center connecting line of the upper semicircular area and the lower semicircular area, and the lowest elevation of the first steel template is an outer longitudinal boundary of the sixth row area and the seventh row area; then, respectively erecting a second steel template at the boundaries of the first sector and the sixth sector of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the second steel template is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sector;

(5) carrying out first-time pervious concrete pouring, comprising the following steps: respectively pouring concrete in the areas surrounded by the edge side steel templates in the first row of areas and the twelfth row of areas, the areas surrounded by the first steel templates in the sixth row of areas and the seventh row of areas, and the areas surrounded by the first sector blocks and the second steel templates in the upper semicircular area and the lower semicircular area; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the first row of areas, the sixth row of areas, the seventh row of areas and the twelfth row of areas are divided into rectangular blocks for pouring concrete, the first fan-shaped blocks and the sixth fan-shaped blocks are respectively poured in blocks from the circle centers of the upper semicircular area and the lower semicircular area to fan-shaped circular arcs gradually, and the edge side steel formwork, the first steel formwork and the second steel formwork are dismantled after the first pervious concrete is poured for three days;

(6) respectively erecting third steel templates at longitudinal boundaries of a second row of areas, a third row of areas, a fourth row of areas, a fifth row of areas, an eighth row of areas, a ninth row of areas, a tenth row of areas and an eleventh row of areas of the rectangular area, transverse boundaries formed by intersecting with the reserved channels, and transverse boundaries formed by intersecting with the upper semicircular area and the lower semicircular area; the highest position of the elevation of the third steel template is a vertical line at the joint of the fifth row area and the sixth row area and a vertical line at the joint of the seventh row area and the eighth row area, the elevation of the third steel template is gradually reduced from the fifth row area to the first row area, and the elevation of the third steel template is gradually reduced from the eighth row area to the eleventh row area; respectively erecting a fourth steel template at the boundary of a third sector and a fourth sector of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the fourth steel template is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sectors;

(7) carrying out elevation rechecking on the pervious concrete poured for the first time, and removing the pervious concrete poured for the first time if the pervious concrete is higher than the designed elevation; if the height is lower than the designed elevation, the pervious concrete is poured;

(8) and (3) carrying out second pervious concrete pouring, comprising the following steps: respectively pouring pervious concrete in areas surrounded by third steel templates in the second, fourth, ninth and eleventh rows of areas of the rectangular area and areas surrounded by third sector-shaped blocks and fourth steel templates in the upper and lower semicircular areas; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the second row area, the fourth row area, the ninth row area and the eleventh row area are divided into rectangular blocks for pouring concrete, and the third sector block and the fourth sector block are respectively poured in blocks from the circle centers of the upper semicircular area and the lower semicircular area to the circular arcs of the sectors gradually; the third steel formwork and the fourth steel formwork are dismantled after the second pervious concrete is poured for three days;

(9) respectively erecting fifth steel templates at the boundaries of second sector sectors and fifth sector sectors of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the fifth steel templates is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sectors;

(10) carrying out elevation rechecking on the pervious concrete poured for the second time, and removing the pervious concrete poured for the second time if the pervious concrete is higher than the designed elevation; if the height is lower than the designed elevation, the pervious concrete is poured;

(11) carrying out third-time pervious concrete pouring, comprising the following steps:

respectively pouring concrete in the area surrounded by the third steel templates of the third, fifth, eighth and tenth rows of areas, the second fan-shaped block sector of the upper and lower semi-circular areas, the area of the fifth fan-shaped block and the reserved channel of the rectangular area; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the third row area, the fifth row area, the eighth row area and the tenth row area are divided into rectangular blocks for pouring concrete, the second fan-shaped block and the fifth fan-shaped block are respectively poured into concrete in blocks from the circle centers of the upper semicircular area and the lower semicircular area to fan-shaped circular arcs gradually, and the fifth steel formwork is detached after concrete is poured for three days.

2. The large-area variable curvature soccer field construction method of claim 1, wherein: the rubble drainage blanket include from supreme geotechnological cloth, the inverted filter and the rubble layer of filling of fully spreading on cement stabilized macadam basic unit down in proper order.

3. The large-area variable curvature soccer field construction method according to claim 1 or 2, wherein: the material of the reverse filtering layer is formed by mixing medium sand, coarse sand and gravel.

Technical Field

The invention relates to a football field construction method +, in particular to a large-area variable-curvature football field construction method.

Background

How to adopt an effective control means to ensure the construction quality in the construction process of the large-area variable-curvature pervious concrete in the football field is always a difficult problem in the industry. The park project football field construction is more difficult. The football field pervious concrete is thin, the problems of concrete heat dissipation and cracks do not need to be considered, and the surface has a slope, so the technical difficulty is high. The block division of the permeable concrete structure layer and the quality control in the construction process are key technologies, and how to reasonably divide the whole football field into easily constructed bin blocks determines the difficulty degree and quality control of subsequent construction. The requirement of pouring pervious concrete on the gravel layer for the drainage gradient is met, the flatness and the gradient are guaranteed, and the method is not easy for a large-area variable-curvature football field.

Chinese patent with application number CN201720678601.7 discloses "ventilative pervious football court", football court is built by basic unit, bedding course, basic sheet layer and ventilative layer and forms, the basic unit is laid by the material that does not contain cement and pitch and tamps, the bedding course adopts the water permeability material to lay on the basic unit, the floor concatenation is assembled by the suspension to the basic sheet layer and constitutes, the basic sheet layer is assembled on the bedding course, ventilative layer adopts artificial turf to pave in the suspension and assembles the floor top. The conventional air-permeable and water-permeable football field disclosed in the patent is not suitable for a large-area variable-curvature water-permeable concrete construction method.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the construction method of the large-area variable-curvature football field, which has the advantages of short construction period, low construction cost, convenience and rapidness and improvement on construction precision.

The invention relates to a construction method of a large-area variable-curvature football field, which comprises the following steps:

(1) dividing a set football field area into an annular football field consisting of an upper semicircular area, a lower semicircular area and a rectangular area connected between the upper semicircular area and the lower semicircular area;

(2) leveling and plain soil compacting the football field area, and then sequentially laying a cement-stabilized macadam base layer and a macadam drainage layer on the plain soil compacting layer from bottom to top;

(3) the broken stone drainage layer is characterized in that an upper semicircular area and a lower semicircular area of a football court area are respectively divided into six fan-shaped blocks, a first fan-shaped block, a second fan-shaped block, a third fan-shaped block, a fourth fan-shaped block, a fifth fan-shaped block and a sixth fan-shaped block are sequentially arranged from left to right, the rectangular area is divided into 12 rows along the direction parallel to the longitudinal central symmetry axis of the annular football court, a row of areas, a second row of areas, a third row of areas, a fourth row of areas, a fifth row of areas, a sixth row of areas, a seventh row of areas, an eighth row of areas, a ninth row of areas, a tenth row of areas, an eleventh row of areas and a twelfth row of areas are sequentially arranged from left to right, and a reserved channel is arranged in the middle of the rectangular area along the direction parallel to the transverse symmetry axis of the annular football court;

(4) respectively supporting edge side steel templates at a transverse boundary formed by the intersection of a first row area and a twelfth row area of the rectangular area with the reserved channel, a transverse boundary formed by the intersection of the first row area and the lower semicircular area and a left longitudinal boundary and a right longitudinal boundary of the first row area and the twelfth row area 2, respectively supporting a first steel template at the left longitudinal boundary and the right longitudinal boundary of the sixth row area and the seventh row area and the transverse boundary, wherein the highest elevation of the first steel template is a circle center connecting line of the upper semicircular area and the lower semicircular area, and the lowest elevation of the first steel template is an outer longitudinal boundary of the sixth row area and the seventh row area; then, respectively erecting a second steel template at the boundaries of the first sector and the sixth sector of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the second steel template is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sector;

(5) carrying out first-time pervious concrete pouring, comprising the following steps: respectively pouring concrete in the areas surrounded by the edge side steel templates in the first row of areas and the twelfth row of areas, the areas surrounded by the first steel templates in the sixth row of areas and the seventh row of areas, and the areas surrounded by the first sector blocks and the second steel templates in the upper semicircular area and the lower semicircular area; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the first row of areas, the sixth row of areas, the seventh row of areas and the twelfth row of areas are divided into rectangular blocks for pouring concrete, the first fan-shaped blocks and the sixth fan-shaped blocks are respectively poured in blocks from the circle centers of the upper semicircular area and the lower semicircular area to fan-shaped circular arcs gradually, and the edge side steel formwork, the first steel formwork and the second steel formwork are dismantled after the first pervious concrete is poured for three days;

(6) respectively erecting third steel templates at longitudinal boundaries of a second row of areas, a third row of areas, a fourth row of areas, a fifth row of areas, an eighth row of areas, a ninth row of areas, a tenth row of areas and an eleventh row of areas of the rectangular area, transverse boundaries formed by intersecting with the reserved channels, and transverse boundaries formed by intersecting with the upper semicircular area and the lower semicircular area; the highest position of the elevation of the third steel template is a vertical line at the joint of the fifth row area and the sixth row area and a vertical line at the joint of the seventh row area and the eighth row area, the elevation of the third steel template is gradually reduced from the fifth row area to the first row area, and the elevation of the third steel template is gradually reduced from the eighth row area to the eleventh row area; respectively erecting a fourth steel template at the boundary of a third sector and a fourth sector of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the fourth steel template is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sectors;

(7) carrying out elevation rechecking on the pervious concrete poured for the first time, and removing the pervious concrete poured for the first time if the pervious concrete is higher than the designed elevation; if the height is lower than the designed elevation, the pervious concrete is poured;

(8) and (3) carrying out second pervious concrete pouring, comprising the following steps: respectively pouring pervious concrete in areas surrounded by third steel templates in the second, fourth, ninth and eleventh rows of areas of the rectangular area and areas surrounded by third sector-shaped blocks and fourth steel templates in the upper and lower semicircular areas; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the second row area, the fourth row area, the ninth row area and the eleventh row area are divided into rectangular blocks for pouring concrete, and the third sector block and the fourth sector block are respectively poured in blocks from the circle centers of the upper semicircular area and the lower semicircular area to the circular arcs of the sectors gradually; the third steel formwork and the fourth steel formwork are dismantled after the second pervious concrete is poured for three days;

(9) respectively erecting fifth steel templates at the boundaries of second sector sectors and fifth sector sectors of the upper semicircular area and the lower semicircular area, wherein the highest elevation of the fifth steel templates is the circle center of the upper semicircular area and the lower semicircular area, and the elevation gradually decreases towards the circular arc side of the sectors;

(10) carrying out elevation rechecking on the pervious concrete poured for the second time, and removing the pervious concrete poured for the second time if the pervious concrete is higher than the designed elevation; if the height is lower than the designed elevation, the pervious concrete is poured;

(11) carrying out third-time pervious concrete pouring, comprising the following steps:

respectively pouring concrete in the area surrounded by the third steel templates of the third, fifth, eighth and tenth rows of areas, the second fan-shaped block sector of the upper and lower semi-circular areas, the area of the fifth fan-shaped block and the reserved channel of the rectangular area; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the third row area, the fifth row area, the eighth row area and the tenth row area are divided into rectangular blocks for pouring concrete, the second fan-shaped block and the fifth fan-shaped block are respectively poured into concrete in blocks from the circle centers of the upper semicircular area and the lower semicircular area to fan-shaped circular arcs gradually, and the fifth steel formwork is detached after concrete is poured for three days.

The method reasonably divides the whole permeable concrete layer of the football field into a semicircular area and a rectangular area, then divides the sector blocks and the rectangular area of the semicircular area into blocks, numbers each block, and organizes construction according to a reasonable construction sequence after numbering.

The football field finds slopes towards two sides along the central axis in the longitudinal direction, and finds slopes towards the periphery from the circle center in the semicircular area, and because the width of the football field is wide, the highest position in the middle is higher than the lowest position in the periphery by a set height, for example, 190 mm; in order to control the slope, the slope is found on the pervious concrete layer, namely the football field is divided into 4 blocks which are two semicircular areas respectively, and the middle rectangular area is divided into a left block and a right block according to the central axis; then the rear half area is equally divided into 6 sectors by taking the circle center as the center, and the middle left rectangular area and the middle right rectangular area are divided into blocks, if the blocks can be divided into 6m multiplied by 6 m; and pouring permeable concrete every other blocks, wherein the slope accuracy must be ensured during pouring of each block of concrete, and after the strength of the poured concrete meets the requirement, pouring other blocks of permeable concrete to ensure the slope finding accuracy of the concrete. The large-area variable-curvature football field construction method system ensures accurate field control of the football field.

Drawings

Fig. 1 is a schematic view of a first pouring top view node of a construction method of a large-area variable-curvature football field according to the invention;

FIG. 2 is a schematic top view of a node at the junction between a semicircular area and a rectangular area in the construction method of a large-area variable curvature football field according to the present invention;

fig. 3 is a schematic view of erecting vertical surface nodes by pouring a rectangular area template for the first time in the construction method of the large-area variable-curvature football field;

fig. 4 is a schematic view of erecting vertical surface nodes by using rectangular area templates in the second pouring and the third pouring of the construction method of the large-area variable-curvature football field;

fig. 5 is a schematic diagram of a second pouring top view node of the construction method of a large-area variable-curvature football field of the invention;

fig. 6 is a schematic diagram of a third pouring top view node of the construction method for a large-area variable-curvature football field.

Detailed Description

The invention is described in detail below with reference to the following figures and specific examples:

the invention discloses a large-area variable-curvature football field construction method as shown in the attached drawings, which comprises the following steps:

(1) dividing a set football field area into a ring-shaped football field consisting of an upper semicircular area 1-1, a lower semicircular area 1-2 and a rectangular area 2 connected between the upper semicircular area 1-1 and the lower semicircular area 1-2;

(2) the method comprises the steps of leveling the football field area and tamping plain soil, and then paving a cement stabilized macadam base layer and a macadam drainage layer on a plain soil tamping layer from bottom to top in sequence.

As an embodiment of the invention, the gravel drainage layer comprises a geotextile, a reverse filter layer and a filled gravel layer which are fully paved on the cement stabilized gravel base layer from bottom to top in sequence. Further preferably, the material of the reverse filtering layer is formed by mixing medium sand, coarse sand and gravel.

(3) On the gravel drainage layer, an upper semi-circle region 1-1 and a lower semi-circle region 1-2 of a football field region are respectively divided into six fan-shaped blocks, a first fan-shaped block B1, a second fan-shaped block B2, a third fan-shaped block B3, a fourth fan-shaped block B4, a fifth fan-shaped block B5 and a sixth fan-shaped block B6 are sequentially arranged from left to right, the rectangular region 2 is divided into 12 rows along a direction parallel to a longitudinal central symmetry axis of the annular football field, and a row region A1, a second row region A2, a third row region A3, a fourth row region A4, a fifth row region A5, a sixth row region A6, a seventh row region A7, an eighth row region A8, a ninth row region A9, a tenth row region A10, an eleventh row region A11 and a twelfth row region A12 are sequentially arranged from left to right. A reserved channel 3 is arranged in the middle of the rectangular area 2 along the direction parallel to the transverse symmetry axis of the annular football court.

(4) Edge side steel templates are respectively erected at the transverse boundary formed by the intersection of the first column area A1 and the twelfth column area A12 of the rectangular area 2 and the reserved channel 3, the transverse boundary formed by the intersection of the upper semicircular area 1-1 and the lower semicircular area 1-2 and the left and right longitudinal boundaries of the first column area A1 and the twelfth column area A12, first steel templates are respectively erected at the left and right longitudinal boundaries and the transverse boundaries of the sixth column area A6 and the seventh column area A7, the highest elevation of the first steel templates is the circle center connecting line of the upper semicircular area 1-1 and the lower semicircular area 1-2, and the lowest elevation is the outer longitudinal boundary of the sixth column area A6 and the seventh column area; then, second steel templates are respectively erected at the boundaries of the first sector block B1 and the sixth sector block B6 of the upper semicircular area 1-1 and the lower semicircular area 1-2, the highest elevation of each second steel template is the center of a circle of the upper semicircular area 1-1 and the lower semicircular area 1-2, and the elevation gradually decreases towards the circular arc side of the sector;

(5) carrying out first-time pervious concrete pouring, comprising the following steps: pouring concrete in the area enclosed by the edge side steel templates in the first column area A1 and the twelfth column area A12, the area enclosed by the first steel templates in the sixth column area A6 and the seventh column area A7, and the areas enclosed by the first steel templates in the first segment B1 and the sixth segment B6 of the upper semicircular area 1-1 and the lower semicircular area 1-2 respectively; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the first column area a1, the sixth column area a6, the seventh column area a7 and the twelfth column area a12 are divided into rectangular blocks of casting concrete, for example, 6m × 6m is adopted for carrying out block casting concrete, and the first sector block B1 and the sixth sector block B6 are respectively cast in blocks gradually towards a sector circular arc from the center of the upper semicircular area 1-1 and the lower semicircular area 1-2. The edge side steel formwork, the first steel formwork and the second steel formwork are dismantled after the first pervious concrete is poured for three days.

(6) Third steel templates are respectively arranged at the longitudinal boundaries of a second column area A2, a third column area A3, a fourth column area A4, a fifth column area A5, an eighth column area A8, a ninth column area A9, a tenth column area A10 and an eleventh column area A11 of the rectangular area 2, the transverse boundaries formed by intersecting with the reserved channel 3 and the transverse boundaries formed by intersecting with the upper semicircular area 1-1 and the lower semicircular area 1-2; the highest point of the elevation of the third steel template is a vertical line at the joint of the fifth row area A5 and the sixth row area A6 and a vertical line at the joint of the seventh row area A7 and the eighth row area A8, the elevation of the third steel template gradually decreases from the fifth row area A5 to the first row area, and the elevation of the third steel template gradually decreases from the eighth row area A8 to the eleventh row area A11; respectively supporting fourth steel templates at the boundaries of a third sector block sector B3 and a fourth sector block B4 of the upper semicircular area 1-1 and the lower semicircular area 1-2, wherein the highest elevation of the fourth steel templates is the center of the circle of the upper semicircular area 1-1 and the center of the circle of the lower semicircular area 1-2, and the elevation gradually decreases towards the circular arc side of the sector;

(7) carrying out elevation rechecking on the pervious concrete poured for the first time, and removing the pervious concrete poured for the first time if the pervious concrete is higher than the designed elevation; and if the height is lower than the designed elevation, the pervious concrete is poured additionally.

(8) And (3) carrying out second pervious concrete pouring, comprising the following steps: respectively pouring pervious concrete in the areas surrounded by the third steel templates of the second column area A2, the fourth column area A4, the ninth column area A9 and the eleventh column area A11 of the rectangular area 2 and the areas surrounded by the fourth steel templates of the third sector-shaped block B3 and the fourth sector-shaped block B4 of the upper semi-circular area 1-1 and the lower semi-circular area 1-2; the pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the second column area a2, the fourth column area a4, the ninth column area a9 and the eleventh column area a11 are divided into rectangular blocks of casting concrete, for example, 6m × 6m is adopted for carrying out block casting concrete, and the third sector block B3 and the fourth sector block B4 are respectively cast in blocks gradually towards fan-shaped circular arcs from the centers of the upper semicircular area 1-1 and the lower semicircular area 1-2.

And the third steel formwork and the fourth steel formwork are dismantled after the second pervious concrete is poured for three days.

(9) Respectively supporting fifth steel templates at the boundaries of a second sector B2 and a fifth sector B5 of the upper semicircular area 1-1 and the lower semicircular area 1-2, wherein the highest elevation of the fifth steel templates is the center of the circle of the upper semicircular area 1-1 and the lower semicircular area 1-2, and the elevation gradually decreases towards the circular arc side of the sectors;

(10) carrying out elevation rechecking on the pervious concrete poured for the second time, and removing the pervious concrete poured for the second time if the pervious concrete is higher than the designed elevation; and if the height is lower than the designed elevation, the pervious concrete is poured additionally.

(11) Carrying out third-time pervious concrete pouring, comprising the following steps:

concrete is poured in the area enclosed by the third steel templates of the third column area A3, the fifth column area A5, the eighth column area A8 and the tenth column area A10 of the rectangular area 2, the second sector B2 and the fifth sector B5 of the upper semi-circle area 1-1 and the lower semi-circle area 1-2 and the reserved channel 3 respectively. The pouring sequence is as follows: pouring from the lowest elevation point to the highest elevation point of each pouring area to form a slope shape; the third column area A3, the fifth column area a5, the eighth column area A8 and the tenth column area a10 are divided into rectangular blocks of cast concrete, for example, the blocks of cast concrete are cast by adopting the size of 6m × 6m, and the second sector block B2 and the fifth sector block B5 are respectively cast by blocks gradually towards the circular arcs of the sectors from the centers of the upper half circle area 1-1 and the lower half circle area 1-2. And the fifth steel template is dismantled after concrete is poured for three days.