CN113711883B - Underground lodging-resistant structure for arbor transplantation and construction method - Google Patents

Underground lodging-resistant structure for arbor transplantation and construction method Download PDF

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CN113711883B
CN113711883B CN202110934701.2A CN202110934701A CN113711883B CN 113711883 B CN113711883 B CN 113711883B CN 202110934701 A CN202110934701 A CN 202110934701A CN 113711883 B CN113711883 B CN 113711883B
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geogrid
soil
arbor
planting
length
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CN113711883A (en
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贾彦兵
安通
洪长敏
吕敬应
叶军海
周一勤
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Ningbo Communication Engineering Construction Group Co Ltd
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Ningbo Communication Engineering Construction Group Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/04—Transplanting trees; Devices for grasping the root ball, e.g. stump forceps; Wrappings or packages for transporting trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/04—Supports for hops, vines, or trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/099—Auxiliary devices, e.g. felling wedges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces

Abstract

The invention discloses an underground lodging-resistant structure for arbor transplantation and a construction method, wherein the underground lodging-resistant structure comprises planting holes, soil balls of arbors, geogrids and the like, and has the following characteristics: the geogrid is made of a porous lattice material, so that root systems of trees in soil balls can grow unimpeded, the integrity of transplanted green lands of the trees is improved, water and soil loss is reduced, and the geogrid is ecological and environment-friendly; the geogrid is low in price and high in tensile strength, the arrangement mode can be X-shaped, cross-shaped, rice-shaped or full-cloth-shaped, the geogrid is diversified and flexible, the adaptability is strong, various defects of ground support of transplanted trees are eliminated, the ornamental value of the trees is improved, and potential safety hazards are overcome; and thirdly, the provided calculation method is clear in principle, scientific and practical, and can be used as construction guidance for the underground lodging-resistant structure for arbor transplanting. Therefore, the invention has the characteristics of simple structure, convenient construction, low manufacturing cost, safety, reliability, beauty, practicability, easy popularization and application and the like, and has higher economic benefit and social benefit by combining with a corresponding construction method.

Description

Underground lodging-resistant structure for arbor transplanting and construction method
Technical Field
The invention relates to the field of ecological environment protection, in particular to an arbor transplanting lodging-resistant structure and a construction method.
Background
The greening of trees is an important content for the construction and protection of ecological environment and is also an internal requirement for the high-quality development of civilized society. With the acceleration of infrastructure construction pace, the pace of greening and beautifying the environment is continuously accelerated according to the 'three-synchronization' requirement of engineering construction, and the greening landscape is required to be formed in short time and take effect quickly. Therefore, the trees with large transplant volume become an important means for rapidly greening and beautifying the infrastructure. As the trees with larger volume are valuable ecological resources after years of growth, the method has very high economic and social benefits and environmental protection values, if the transplantation technology is not over, the trees can die, the environment is difficult to beautify, and meanwhile, the ecological environment of the original land of the trees is damaged. In the arbor transplanting technology, the wind prevention and lodging resistance of the transplanted arbor is an important work content and is a key technology for ensuring the survival and forest establishment of the transplanted arbor. At present, the main measures for preventing the trees from lodging during the transplantation are ground support, and the underground lodging-resistant measures are less researched and applied. The ground fixing and supporting mode needs to occupy a certain ground space, pedestrian passing is easily influenced in areas with large pedestrian flow, such as sidewalks and moving squares, and the like, and large potential safety hazards exist; simultaneously, expose also to a certain extent subaerial support and influenced the ornamental effect of arbor, and consolidate the respond well, be unfavorable for the quick construction of arbor view. The existing underground reinforcing method is basically used for anchoring and reinforcing the parts around and below the earth ball of the tree in a small range, for example, the published Chinese patent No. CN201911336945, named as 'a tree underground fixing method', the published Chinese patent No. CN201320077831, named as 'a three-dimensional anchoring structure for underground reinforcement of the tree' and the like have the defects of complex structural design, inconvenient construction, poor lodging-resistant effect of the tree and the like, so that the use requirement of the tree transplantation lodging resistance is difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the arbor transplanting underground lodging-resistant structure and the construction method, which have the advantages of simple structure, convenient construction, low manufacturing cost, safety, reliability, beauty, practicability and easy popularization and application.
The technical problem of the invention is realized by the following technical scheme:
a kind of arbor transplants the underground and resists the lodging structure, including according to the even regular multiple plant holes of the way of multirow and multiseriate on the green land, transplant the arbor with earth ball in every plant hole, the said multiple plant hole is equipped with the level multi-disc and is disposed vertically and horizontally and is criss-cross geotechnological lattice grid or level multi-disc diagonal cross arrangement and is the geogrid grid of the shape of the x, every criss-cross geotechnological lattice grid or every x geogrid grid of the shape of the x is vertical many times from the earth ball top of a arbor to the earth ball bottom of the adjacent arbor and extends and lays alternatively; the top of each soil ball is provided with a fixed geogrid ring which is fixed with each cross-shaped or each X-shaped geogrid strip passing through the top of the soil ball.
The planar multi-sheet cross-shaped geogrid strip is arranged in a longitudinal and transverse mode and has the width of
Figure 768996DEST_PATH_IMAGE001
The width of the plane multi-sheet diagonal cross-arranged X-shaped geogrid is
Figure 760086DEST_PATH_IMAGE001
The two are combined and arranged to form a grid of the earthwork in a shape of a Chinese character mi; each cross-shaped geogrid strip or each X-shaped geogrid strip is vertically arranged for multiple times from the top of a soil ball of one arbor to the bottom of a soil ball of an adjacent arbor in an extending and alternate mode, a vertical curve of the geogrid is fitted by a triangular cosine curve, the top and the bottom of the soil ball of each arbor are included by the geogrid strips in the shape of the triangular cosine curve, when the soil ball moves under the influence of wind force of the arbor, friction force is generated between the geogrid strips and planting soil, the upper geogrid strip is arranged at the top of the soil ball, the lower geogrid strip is arranged at the bottom of the soil ball, and planting soil pressure acts on the upper geogrid strip and the lower geogrid strip respectivelyPAS(x)、PAX(x)Taking the geogrid bars distributed in a cross shape as an example, for any given arbor in one row or one column of at least 4 arbors in the middle row or one column of the greening landAArborsARespectively consisting of an upper geogrid and a lower geogridTension ofT AS 、T AX Resisting resultant windF(ii) a For trees with one row or column edgeBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids and straight line layout of lengthl 1 Tension resisting combined wind force of length geotechnical grid bar combinationF；According to the force balance principle, the geogrid strip is obtained to resist the combined forceFRelated calculation formulas of the tension, the moment and the soil nail;
formula I,
ArborAThe fitting trigonometric function curve of the upper geotechnical grid bars and the lower geotechnical grid bars of the cross-shaped single sheets at the top and the bottom of the soil ball and the pressure of the planting soil are
Figure 537549DEST_PATH_IMAGE002
Row or column edge treesBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids and straight line layout of lengthl 1 The curve and linear equation of the combination of the length of the soil engineering grid bars and the pressure of the planting soil are
Figure 955892DEST_PATH_IMAGE003
The formula II,
ArborAGeogrid strip on top and bottom of soil ball、The earth work grid bars are arrangeddxFrictional resistance in length andnmultiple times2lOne-row or one-column arbor with horizontal tension on lengthBThe top and the bottom of the earth ball are shaped by a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl 1 Length earth work griddxFrictional resistance in length andl/2+l 1 the horizontal tension of the length is
Figure 684551DEST_PATH_IMAGE004
Calculating arborAUpper geogrid strip、Grid bar for resisting combined wind forceFWhen horizontal tension of
Figure 479332DEST_PATH_IMAGE005
Wherein
Figure 845722DEST_PATH_IMAGE006
Calculating arborAUpper geogrid strip、The grid bars of the lower earthwork use the earth ball bottom as the rotation point to resist the resultant wind forceFHorizontal tension at moment of force of
Figure 434967DEST_PATH_IMAGE007
Wherein
Figure 919431DEST_PATH_IMAGE006
Arbors with calculation of edges of one row or columnBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l 1 Combined length resistant wind powerFAt the time of horizontal tension
Figure 49061DEST_PATH_IMAGE008
Wherein
Figure 535537DEST_PATH_IMAGE006
Arbors with calculation of edges in one row or one columnBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l 1 Length combination wind force resisting force taking earth ball bottom as rotating pointFHorizontal tension at moment of force of
Figure 561262DEST_PATH_IMAGE009
Wherein
Figure 998934DEST_PATH_IMAGE006
The formula III,
ArborAThe tension of the upper and lower geogrids is opposite to the combined wind forceFThe stability factor at the time of horizontal sliding of (2) is required to satisfy
Figure 869938DEST_PATH_IMAGE010
ArborAUpper geogrid strip、Moment of grid for combined wind powerFThe stability factor of the resistance to lodging moment is required to meet
Figure 476500DEST_PATH_IMAGE011
Row or column edge treesBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l1Combined length resistant wind powerFThe stability factor at the time of horizontal sliding needs to be satisfied
Figure 469864DEST_PATH_IMAGE012
Trees with edges in one row or one columnBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l 1 Combined length resistant wind powerFThe stability factor of the lodging resistant moment is required to meet
Figure 896297DEST_PATH_IMAGE013
The same row spacing and column spacing of the above calculation formulas arelAnd if the row spacing is different from the column spacing, it is not necessary to useSame distance
Replacing a row space or a column space; resultant force of wind powerFThe included angle between the direction of the grid bars and one line or one line of the cross-shaped arranged soil-working grid bars
Figure 332177DEST_PATH_IMAGE014
In time, in formula one, formula two and formula three
Figure 793245DEST_PATH_IMAGE015
Respectively by corresponding
Figure 629614DEST_PATH_IMAGE016
Replacing; the method is used for calculating the X-shaped arrangement geogrid strips, and the method is used for superposing and calculating the M-shaped arrangement geogrid strips;
the symbols in formula one, formula two and formula three are defined as:
Figure 808923DEST_PATH_IMAGE001
-the width of the geogrid strip,
Figure 582582DEST_PATH_IMAGE017
；
Figure 898156DEST_PATH_IMAGE018
-the number of coefficients is,
Figure 171006DEST_PATH_IMAGE019
no dimension;
Figure 572031DEST_PATH_IMAGE020
the half length of the center distance of each row and each column of planting holes which are uniform and regular is arranged on the green land,
Figure 355573DEST_PATH_IMAGE017
；
Figure 791233DEST_PATH_IMAGE021
arbors with one row or column of edgesBThe length of the geotechnical grid bars is arranged in a straight line shape,
Figure 31722DEST_PATH_IMAGE017
；
Figure 185623DEST_PATH_IMAGE022
arbors with one row or column of edgesBThe length of the soil nails at the tail ends of the geogrid strips are linearly distributed,
Figure 740232DEST_PATH_IMAGE017
；
Figure 528934DEST_PATH_IMAGE023
arborARequired geogrid strip placement horizontal length to meet horizontal stability and lodging resistance requirements divided by2l，Namely the number of periods of cosine trigonometric functions fitted by 2 times of distance between the arbors;
Figure 143586DEST_PATH_IMAGE024
arbors having one row or one column of edges respectivelyBFrom the shape of a triangular cosine curvel/2The upper geogrid strip, the lower geogrid strip and the linear arranged arbor with the length satisfying the soil nail number of the horizontal sliding stability requirement at the tail end of the geogrid strip or one line or one column of edgeBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l 1 Combined resisting combined wind forceFThe number of the soil nails required by the safety coefficient of soil nail drawing in the lodging-resistant moment is large;
Figure 315942DEST_PATH_IMAGE025
the radius of the soil ball for transplanting the arbor,
Figure 939821DEST_PATH_IMAGE017
；
Figure 603537DEST_PATH_IMAGE026
the diameter of the soil nail is that of the soil nail,
Figure 654670DEST_PATH_IMAGE017
；
Figure 252005DEST_PATH_IMAGE027
the height from the bottom surface of the arbor transplanting soil ball to the top surface of the planting soil,
Figure 413996DEST_PATH_IMAGE017
；
Figure 177290DEST_PATH_IMAGE028
the horizontal wind resultant force to which the arbor is subjected is determined by field test detection or referring to relevant standard specifications according to the external dimension of the arbor and the field climate condition,
Figure 868166DEST_PATH_IMAGE029
；
Figure 952796DEST_PATH_IMAGE030
the arbor is transplanted to the bottom of the soil ball to the height of the resultant force of the wind,
Figure 715216DEST_PATH_IMAGE017
；
Figure 335947DEST_PATH_IMAGE031
taking half height of the soil ball for transplanting the arbor as an original pointOThe horizontal abscissa value of (a) is,
Figure 463302DEST_PATH_IMAGE017
；
Figure 300808DEST_PATH_IMAGE032
taking half height of transplanted arbor soil ball as original pointOIs/are as follows
Figure 804602DEST_PATH_IMAGE031
The equation of the cosine trigonometric function of (a),
Figure 575112DEST_PATH_IMAGE017
；
Figure 637484DEST_PATH_IMAGE033
by treesAAnd arborBHalf height of the transplanted soil ball is the original pointOIs
Figure 696707DEST_PATH_IMAGE031
Tangent of the triangular cosine curve and
Figure 738612DEST_PATH_IMAGE031
the included angle of the shaft is set by the angle,
Figure 832470DEST_PATH_IMAGE034
；
Figure 62813DEST_PATH_IMAGE035
arbors with one row or one column of edgesBIs arranged in a straight linel/2+l 1 Geomatics grid bar shape and
Figure 406070DEST_PATH_IMAGE031
the included angle of the axes is set by the angle,
Figure 251666DEST_PATH_IMAGE034
；
Figure 200031DEST_PATH_IMAGE036
the included angle between the-X-shaped geotechnical grid bars and the cross-shaped geotechnical grid bars,
Figure 338626DEST_PATH_IMAGE034
；
Figure 372441DEST_PATH_IMAGE037
arbors with one row or column of edgesBIs arranged in a straight linel/2+l 1 The angle between the axial direction and the vertical direction of the soil nails at the tail ends of the geogrid strips,
Figure 21728DEST_PATH_IMAGE034
；
Figure 90178DEST_PATH_IMAGE014
resultant of wind forcesFAngle between action line and one row or one column of cross-arranged earthwork grid bars
Figure 963456DEST_PATH_IMAGE014
，
Figure 720453DEST_PATH_IMAGE034
；
Figure 173431DEST_PATH_IMAGE038
The friction coefficient between the geotechnical grid bars and the planting soil is determined by field tests or by referring to relevant standard specifications;
Figure 299650DEST_PATH_IMAGE039
the soil ball weight of the planting soil and the arbor is the same for simplifying calculation,
Figure 45627DEST_PATH_IMAGE040
；
Figure 585193DEST_PATH_IMAGE041
the vertically distributed load of the geogrid strip,
Figure 576282DEST_PATH_IMAGE042
；
Figure 353745DEST_PATH_IMAGE043
each being a treeAThe upper geogrid strip at the top and the bottom of the soil ball、Fitting trigonometric function curve of the lower earthwork grid bar and the distribution load,
Figure 506509DEST_PATH_IMAGE044
；
Figure 497818DEST_PATH_IMAGE045
arbors with one row or one column of edges respectivelyBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl 1 The curve and linear equation of the length of the geogrid strip, the distribution load suffered,
Figure 823757DEST_PATH_IMAGE046
；
Figure 924568DEST_PATH_IMAGE047
respectively being arborsAThe upper geogrid bar and the lower geogrid bar at the top and the bottom of the soil ball are arranged atdxFrictional resistance in length andnmultiple times2lOne-row or one-column arbor with horizontal tension on lengthBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl 1 Length combined earthwork griddxThe friction resistance on the length of the utility model,
Figure 310550DEST_PATH_IMAGE042
；
Figure 526506DEST_PATH_IMAGE048
respectively for calculation of arborAUpper and lower geogrids resist combined wind forceFAgainst the combined force of horizontal tensionFThe horizontal tension of the geogrid bar during the moment,
Figure 593819DEST_PATH_IMAGE049
；
Figure 345874DEST_PATH_IMAGE050
arbors for calculating edges of a row or column, respectivelyBFrom the shape of a triangular cosine curvel/2Upper and lower geogrids of length and linear layoutl/2+l 1 Length resisting resultant forceFCombined force of horizontal tension and resistanceFThe horizontal tension force in the moment of force,
Figure 106020DEST_PATH_IMAGE049
；
Figure 812201DEST_PATH_IMAGE051
respectively being arborsAUpper and lower geogrids tension and combined wind forceFHorizontal sliding stability factor, moment of tension and resultant force of windFThe lodging resistance stability coefficient of the moment;
Figure 948784DEST_PATH_IMAGE052
respectively being arborsBTension and wind force of earthwork gridFHorizontal sliding stability factor, moment of tension and resultant force of windFThe lodging resistance stability factor of the moment.
The geogrid is made of a geosynthetic material, and one or more of a plastic geogrid, a steel-plastic geogrid, a glass fiber geogrid and a high-strength polyester geogrid are selected; the geogrid strip is a strip geogrid with a certain width cut out according to a specification type fixed-length finished product specified by national standard or technical standard, and the strip width is larger than the diameter of a soil ball by 5cm to 10cm; saidThe upper earthwork grid strip and the lower earthwork grid strip have the same model specification, the names are distinguished due to different placing positions, and the upper earthwork grid strip is arranged on the lower earthwork grid strip
Figure 352084DEST_PATH_IMAGE053
Laying an earth work grid
Figure 283131DEST_PATH_IMAGE054
And laying, wherein the upper geogrid and the lower geogrid are mutually inserted to form a junction of the connection, an upper geogrid is positioned above the junction, namely above the middle-layer planting soil, and a lower geogrid is positioned below the junction, namely below the middle-layer planting soil.
The geogrid ring is an annular geogrid cut from a finished product, the diameter of an inner ring is 1 cm-2 cm larger than the diameter of a trunk at the joint of a tree and a soil ball, and the diameter of an outer ring is 5 cm-10cm larger than the diameter of the soil ball.
The planting soil is suitable for the growth of transplanted trees, the planting soil is separated by the upper geogrid and the lower geogrid, the lower planting soil is arranged below the lower geogrid, the middle planting soil is arranged between the upper geogrid and the lower geogrid, the upper planting soil is arranged above the upper geogrid, and the three layers of planting soil have the same property.
The arborABeing a central arbor in a row or column, said arborBBeing trees at the edge in a row or column.
The soil ball is a part which is dug up together with soil around a root system for transplanting when the arbor is transplanted, the size of the soil ball is determined according to the specification of the arbor, and the soil ball is hemispherical or in a spherical segment shape.
The planting hole is used for transplanting the arbor, the diameter of the planting hole is increased by 60cm to 80cm according to the diameter of the root system or soil ball of the arbor, the depth is increased by 20cm to 40cm, and the hole wall is vertical.
The soil nails are steel reinforcing steel bars and are driven into the green ground to fix the geogrid bars.
A construction method of an underground lodging-resistant structure for arbor transplantation comprises the following steps by taking a plurality of planar and criss-cross geogrids as an example:
step one, drawing up the size of each part of the underground lodging-resistant structure for arbor transplantation and selecting related parameters
Figure 975143DEST_PATH_IMAGE055
According to design information and on-site climatic environment conditions, the sizes and the arrangement forms of all parts of the underground lodging-resistant structure for transplanting the trees are preliminarily simulated, and the geogrid strips, soil nail materials and various safety coefficients are selected;
Figure 413953DEST_PATH_IMAGE056
calculating and rechecking by a formula I, a formula II and a formula III, determining the size and the arrangement form of each component of the underground lodging-resistant structure for arbor transplanting, selecting geotechnical grid bars and soil nail materials, and selecting various safety factors;
(3) preparing materials of each component, manufacturing each component, compiling a construction organization design file, and organizing construction;
step two, leveling the green land, arranging planting holes and applying base fertilizer
Figure 875021DEST_PATH_IMAGE055
Measuring and lofting according to a design drawing, determining the plane position and elevation of the bottom surface of the base fertilizer of the planting hole and the elevation of the lower-layer planting soil, and marking the filling and excavating height by using bamboo sticks or wooden piles, wherein the filling and excavating height comprises the bottom elevation of the linear geotechnical grid bars of the edge planting holes of each row;
(2) leveling a green land, excavating and cleaning to the bottom surface of the base fertilizer of the planting hole, and applying the base fertilizer;
(3) backfilling the planting soil to the elevation of the lower-layer planting soil, wherein the backfilling of the planting soil to the bottom elevation of the linear soil engineering grid bars of the edge planting holes of each row is carried out, and the soil is appropriately compacted by a small-sized road roller or an excavator bucket;
step three, laying a lower-layer geogrid and transplanting arbor
Figure 976969DEST_PATH_IMAGE055
Cross-shaped geogrid bars are paved at the elevation of the backfilled planting soil in rows and columns and in length and breadth, the geogrid bars comprise straight-line geogrid bars of edge planting holes of each row, the geogrid bars can be lengthened by adopting lap joint or ultrasonic welding, and the lap joint length is 5 cm-10 cm:
(2) when the geogrid strips are laid, the geogrid strips are stretched along with the laying, and finally the tail ends of the straight geogrid strips of the edge planting holes are fixed by soil nails;
(3) the arbor is transported to the site, and the soil ball of the arbor is planted in the planting hole;
(4) temporarily supporting a tree with a wood or steel support;
backfilling the middle planting soil and laying the upper geogrid
Figure 890698DEST_PATH_IMAGE055
Backfilling the middle planting soil, and properly compacting by using a small road roller or a bucket of an excavator;
(2) placing a geogrid ring at the top of a soil ball of a tree, wherein radial cutting seams of an inner ring and an outer ring are welded by ultrasonic waves or are bound firmly by geotextile strips, and the inner ring of the geogrid ring is wound and bound with a tree trunk by geotextile;
(3) laying an upper layer of geogrid between two adjacent trees, welding or binding the upper layer of geogrid and an outer ring of each geogrid ring, tightening along with laying during laying, and welding or binding firmly with the intersection of the lower layer of geogrid; the junction of the curved geogrid strip of the edge planting hole and the straight geogrid strip is welded or bound firmly by ultrasonic wave;
step five, backfilling upper planting soil and removing the temporary support bracket
Figure 864690DEST_PATH_IMAGE055
Backfilling upper planting soil, and appropriately compacting by using a small road roller or an excavator bucket;
(2) adjusting the verticality of the arbor, and dismantling the temporary support bracket after meeting the requirements;
(3) the initial maintenance after the arbor transplantation is completed is carried out according to relevant standard specifications;
the geotechnical grid bars are arranged in a shape of X, namely are rotated by an angle
Figure 180265DEST_PATH_IMAGE057
The geogrid strips in a cross shape are arranged in a formula I to a formula IIIlBy
Figure 718693DEST_PATH_IMAGE058
The geotechnical grid bars can be replaced by the geotechnical grid bars with the shape of X or cross, and the direction of wind force is selected;
the laying principle of the geogrid strips in the shape of the Chinese character 'mi' is consistent with the method and the steps, but is more simplified, and the method comprises the following steps:
the first step is to take the ball bottom of the arbor in each planting hole as the lowest point, the middle of two adjacent arbors as the highest point, and the rest parts are arborsACosine curve of
Figure 119719DEST_PATH_IMAGE059
、
Figure 697068DEST_PATH_IMAGE060
Connecting and backfilling the lower planting soil, fully paving the lower geogrid and the edge arborBFixing the tail ends of the straight geogrid strips by using soil nails;
transplanting trees, temporarily reinforcing the trees by adopting ground supports, backfilling middle-layer planting soil on the lower-layer geogrid, namely not filling soil between every two adjacent trees, and backfilling the rest middle-layer planting soil until the tops of soil balls are level, and appropriately compacting by using a small road roller or an excavator bucket;
thirdly, laying a geogrid ring on the top of the earth ball of each tree, winding and binding the geogrid ring with the tree trunk by using geotextile, fully laying an upper geogrid, welding or binding the geogrid ring with each geogrid ring by using ultrasonic waves, and firmly welding or binding the geogrid ring with the upper geogrid and the geogrid ring at the middle of two adjacent trees by using ultrasonic waves at the junction of the upper geogrid and the lower geogrid;
and fourthly, backfilling the upper planting soil on the fully paved upper geogrid to a designed height, moderately compacting by using a small road roller or an excavator bucket, firmly welding or binding the junction of the curved geogrid strips of the edge planting holes and the linear geogrid strips by using ultrasonic waves, and anchoring the tail ends of the linear geogrid strips by using soil nails.
Compared with the prior art, the invention mainly provides an underground lodging-resistant structure for arbor transplantation, which has the following characteristics: the geogrid is made of a porous lattice material, roots in the arbor soil balls can penetrate through the geogrid lattices to grow without hindrance, meanwhile, the geogrid improves the integrity of transplanted arbor greenlands, is particularly suitable for sloping lands or soft soil foundation greenlands which are prone to uneven settlement, reduces water and soil loss, and is ecological and environment-friendly; the adopted geogrid material is low in price, high in tensile strength, various and flexible in arrangement mode and high in adaptability, and can be arranged in a manner of adopting a geogrid in a shape of X, cross, rice or full cloth according to different climatic environments and varieties and specifications of trees, so that various defects of transplanted trees ground support are eliminated, the ornamental value of the trees is improved, and potential safety hazards are overcome; and thirdly, the provided calculation method is clear in principle, scientific and practical, can be used as construction guidance of the underground lodging-resistant structure for arbor transplanting, and improves the safety quality performance. Therefore, the underground arbor transplanting lodging-resistant structure is simple in structure, convenient to construct, low in manufacturing cost, safe, reliable, attractive, practical and easy to popularize and apply, and has high economic benefits and social benefits by combining with a corresponding construction method.
Drawings
Fig. 1 is a schematic plan view of the present invention.
Fig. 2 is a schematic structural view of the geogrid strips of fig. 1 vertically arranged in a cross shape.
Fig. 3 is a schematic structural view of the geogrid strips of fig. 1 vertically arranged in a shape of x.
FIG. 4 is a schematic structural view of various geogrid laying modes for rapid construction
FIG. 5 shows a treeAThe lodging resistance performance of (a) is calculated.
FIG. 6 shows a treeBThe lodging resistance performance of (1) is calculated and plotted.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the above drawings.
As shown in FIGS. 1 to 6, 1 is a green land, 2 is an arbor, 21 is an arborA22, arborB3, soil balls, 4, planting soil, 41, lower planting soil, 42, middle planting soil, 43, upper planting soil, 5, planting holes, 61, geogrid rings, 62, geogrid bars, 621, upper geogrid bars, 622, lower geogrid bars, 623, upper geogrid, 624, lower geogrid, 63 intersection, 7, soil nails, 8, cross and 9.
An underground lodging-resistant structure for transplanting trees and a construction method are disclosed, as shown in figures 1-4, the underground lodging-resistant structure comprises a plurality of planting holes 5 which are uniformly and regularly arranged on a green land 1 in a multi-row and multi-column mode, trees 2 with soil balls 3 are transplanted in each planting hole, a plurality of planting holes 5 are provided with a plurality of planar multi-piece criss-cross 8-shaped geogrid bars 62 or a plurality of planar multi-piece geogrid bars 62 which are in X-shaped 9-shaped cross arrangement, and each piece of cross 8-shaped geogrid bar 62 or each piece of X-shaped 9-shaped geogrid bar 62 vertically extends from the top of a soil ball 3 of one tree 2 to the bottom of a soil ball 3 of an adjacent tree 2 for multiple times in an alternating mode.
Wherein, the green land 1 is a place suitable for the growth of the transplanted arbor 2, and the arbor is a variety which is suitable for the specification, can rapidly green and beautify the infrastructure, and is suitable for the local environmental condition.
The planting hole 5 is used for transplanting the arbor 2, the planting hole 5 is dug according to a designed position, the diameter of the planting hole is increased by 60cm to 80cm according to the diameter of a root system or a soil ball 3 of the arbor 2, the depth is increased by 20cm to 40cm, and the hole wall is vertical. And applying a base fertilizer at the base of the planting hole 5, preferably, mixing the base fertilizer with the plain soil of the planting field, and backfilling to the bottom of the planting hole 5, wherein the backfilling thickness is preferably from 20cm to 30cm.
The soil ball 3 is a part which is dug together with soil around a root system for transplantation when the arbor 2 is transplanted, the size of the soil ball 3 is determined according to the specification of the arbor 2, the shape is hemispherical or segmental, the soil ball 3 is timely bound by a straw rope after being dug, or the soil ball is wrapped by tree wrapping cloth, a sunshade net and the like, and is wound, fixed and tightened by an iron hook net.
Meanwhile, the top of each soil ball 3 is provided with a fixed geogrid ring 61, and the geogrid ring is fixed with each piece of cross-shaped 8 or each piece of X-shaped 9 geogrid strip 62 passing through the top of the soil ball 3.
The planar multi-piece cross-shaped 8 geogrid bar 62 has the width of
Figure 867150DEST_PATH_IMAGE001
The width of the plane multi-piece diagonal cross-arranged X-shaped 9 geogrid bar 62 is
Figure 576480DEST_PATH_IMAGE001
The two are combined and arranged to form a grid of the earthwork in a shape of a Chinese character mi; each piece of cross-shaped 8-shaped geogrid bar 62 or each piece of X-shaped 9-shaped geogrid bar 62 is vertically and repeatedly arranged from the top of the soil ball 3 of one arbor 2 to the bottom of the soil ball 3 of the adjacent arbor 2 in an extending and alternating mode, the vertical curve of the geogrid bar 62 is fitted by a triangular cosine curve, the top and the bottom of the soil ball 3 of each arbor 2 are respectively wrapped by the geogrid bar 62 in a triangular cosine curve shape, when the soil ball 3 has a moving trend under the influence of wind force of the arbor 2, the geogrid bar 62 arranged by the vertical triangular cosine curve generates friction force between the geogrid bar 62 and planting soil 4, the top of the soil ball 3 is provided with an upper geogrid grid bar 621, the bottom of the soil ball is provided with a lower geogrid grid bar 622, and the pressure of the planting soil 4 is respectively acted on the upper geogrid bar 62PAS(x)、PAX(x)Taking the geogrid bar 62 distributed in the cross shape 8 as an example, any given arbor in one row or one column of at least 4 arbors in the middle row or one column of the greening land 1A21, arborARespectively consisting of tension of an upper earthwork grid 621 and a lower earthwork grid 622T AS 、T AX Resisting resultant windF(ii) a For trees with one row or one column of edgesB22 is composed of trigonometric cosine curveLine shapel/2The upper geotechnical grid 621, the lower geotechnical grid 622 and the straight line layout of the lengthl 1 Tension resisting combined wind force of length of geogrid 62 combinationF；According to the force balance principle, the geotechnical grid bar 62 resists the resultant forceFThe tension, the moment and the related calculation formula of the soil nail 7;
formula I,
ArborAThe fitting trigonometric function curves of the upper geotechnical grid 621 and the lower geotechnical grid 622 of the cross-shaped 8 single chip at the top and the bottom of the soil ball 3 and the pressure of the planting soil 4 are
Figure 199222DEST_PATH_IMAGE002
Row or column edge treesBFrom the shape of a triangular cosine curvel/2The upper geotechnical grid 621, the lower geotechnical grid 622 and the straight line layout of the lengthl 1 The curve and linear equation of the combination of the length of the soil engineering grid bars and the pressure of the planting soil 4 are
Figure 520875DEST_PATH_IMAGE003
The second formula,
ArborAGeogrid 621 on top and bottom of soil ball 3、The earth work grid bars 622dxFrictional resistance in length andnmultiple times2lOne-row or one-column arbor with horizontal tension on lengthBThe top and the bottom of the soil ball 3 are shaped by a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl 1 Length earth work griddxFrictional resistance in length andl/2+l 1 the horizontal tension of the length is
Figure 811042DEST_PATH_IMAGE061
Calculating arborAUpper geogrid 621、 Grid 622 for resisting combined wind forceFWhen the horizontal tension of
Figure 488011DEST_PATH_IMAGE062
Wherein
Figure 863629DEST_PATH_IMAGE006
Calculating arborAUpper geogrid 621、The grid bars 622 of the lower earthwork use the earth ball bottom as the rotation point to resist the combined wind forceFAt moment of horizontal tension of
Figure 487509DEST_PATH_IMAGE007
Wherein
Figure 130717DEST_PATH_IMAGE006
Arbors with calculation of edges of one row or columnBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl/2+l 1 Combined length resistant wind powerFAt the time of horizontal tension
Figure 916271DEST_PATH_IMAGE063
Wherein
Figure 779184DEST_PATH_IMAGE006
Arbors with calculation of edges of one row or columnBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl/2+l 1 Length combination wind force resisting force taking earth ball bottom as rotating pointFHorizontal tension at moment of force of
Figure 737913DEST_PATH_IMAGE009
Wherein
Figure 334215DEST_PATH_IMAGE006
The formula III,
ArborAThe tension of the upper earthwork grid 621 and the lower earthwork grid 622 is opposite to the combined wind forceFThe stability factor at the time of horizontal sliding of (2) is required to satisfy
Figure 290670DEST_PATH_IMAGE010
ArborAUpper geogrid 621、Moment-to-wind force of lower-soil-work grid bar 622FThe stability factor of the lodging resistant moment is required to meet
Figure 640880DEST_PATH_IMAGE011
Trees with edges in one row or one columnBFrom the shape of a triangular cosine curvel/2The upper geotechnical grid 621, the lower geotechnical grid 622 and the straight line layout of the lengthl/2+l1Combined length resistant wind powerFThe stability factor at the time of horizontal sliding needs to be satisfied
Figure 606562DEST_PATH_IMAGE012
Row or column edge treesBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl/2+ l 1 Combined length resistant wind powerFThe stability factor of the lodging resistant moment is required to meet
Figure 224363DEST_PATH_IMAGE013
The same row spacing and column spacing of the above calculation formulas arelAnd the row spacing and the column spacing are different, different spacings are used
Replacing a row space or a column space; resultant force of wind powerFIn a row or column of crossesIncluded angle of the earth work grid
Figure 617298DEST_PATH_IMAGE014
In time, in formula one, formula two and formula three
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Respectively by corresponding
Figure 427439DEST_PATH_IMAGE016
Replacing; the laying geogrid strips 62 in the shape of the x-shaped grid 9 are calculated by the method, and the laying geogrid strips in the shape of the m-shaped grid are superposed and calculated by the method;
the symbols in formula one, formula two and formula three are defined as:
Figure 168256DEST_PATH_IMAGE001
the width of the geogrid strip 62,
Figure 528830DEST_PATH_IMAGE017
；
Figure 588053DEST_PATH_IMAGE018
-the number of coefficients is,
Figure 895537DEST_PATH_IMAGE019
dimensionless;
Figure 723816DEST_PATH_IMAGE020
the half length of the distance between the centers of the planting holes 5 of each row and each column is uniformly and regularly arranged on the green land 1,
Figure 957089DEST_PATH_IMAGE017
；
Figure 300345DEST_PATH_IMAGE021
arbors with one row or one column of edgesBStraight line laying earthworkThe length of the grid bars 62 is such that,
Figure 614783DEST_PATH_IMAGE017
；
Figure 563148DEST_PATH_IMAGE022
arbors with one row or column of edgesBThe length of the soil nails at the tail end of the geogrid bar 62 is linearly distributed,
Figure 964392DEST_PATH_IMAGE017
；
Figure 998207DEST_PATH_IMAGE023
arborAThe required geogrid 62 placement horizontal length to meet the horizontal stability and lodging resistance requirements is divided by2l，Namely the number of the periods of the cosine trigonometric function fitted at 2 times of the distance of the arbor;
Figure 647495DEST_PATH_IMAGE024
arbors with edges in one row or one column respectivelyBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 with the length and the linear arrangement of the number of soil nails at the tail end of the geogrid meeting the horizontal sliding stability requirement or the arbor with one line or one row of edgesBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl/2+l 1 Combined resisting combined wind forceFThe number of the soil nails required by the safety factor of drawing the soil nails 7 during the lodging-resistant moment is large;
Figure 450365DEST_PATH_IMAGE025
the arbor 2 is transplanted with the radius of the soil ball 3,
Figure 25441DEST_PATH_IMAGE017
；
Figure 749815DEST_PATH_IMAGE026
the diameter of the soil nail 7 is,
Figure 202793DEST_PATH_IMAGE017
；
Figure 361635DEST_PATH_IMAGE027
the arbor 2 is transplanted from the bottom of the soil ball 3 to the top of the planting soil 4,
Figure 609077DEST_PATH_IMAGE017
；
Figure 414222DEST_PATH_IMAGE028
the resultant horizontal force of the wind to which the arbor 2 is subjected is determined by field test inspection or reference to relevant standard specifications, depending on the external dimensions of the arbor 2 and the climatic conditions of the site,
Figure 405311DEST_PATH_IMAGE029
；
Figure 182774DEST_PATH_IMAGE030
the arbor 2 is transplanted to the bottom of the soil ball 3 to the height of the resultant force of the wind,
Figure 99653DEST_PATH_IMAGE017
；
Figure 595356DEST_PATH_IMAGE031
using half height of the arbor 2 transplanting soil ball 3 as an original pointOThe horizontal abscissa value of (a) is,
Figure 858978DEST_PATH_IMAGE017
；
Figure 490948DEST_PATH_IMAGE032
——using half height of the arbor 2 transplanting soil ball 3 as originOIs
Figure 841377DEST_PATH_IMAGE031
The equation of the cosine trigonometric function of (a),
Figure 355535DEST_PATH_IMAGE017
；
Figure 688427DEST_PATH_IMAGE033
-with treesAAnd arborBHalf height of the transplanting soil ball 3 is the original pointOIs
Figure 174903DEST_PATH_IMAGE031
Tangent of the triangular cosine curve and
Figure 433584DEST_PATH_IMAGE031
the included angle of the shaft is set by the angle,
Figure 435038DEST_PATH_IMAGE034
；
Figure 571621DEST_PATH_IMAGE035
arbors with one row or one column of edgesBIs arranged in a straight linel/2+l 1 Geomatics grid bar shape and
Figure 178183DEST_PATH_IMAGE031
the included angle of the axes is set by the angle,
Figure 109230DEST_PATH_IMAGE034
；
Figure 302707DEST_PATH_IMAGE036
the angle between the-X-shaped 9 geotechnical grid bars 62 and the cross-shaped 8 geotechnical grid bars 62,
Figure 180665DEST_PATH_IMAGE034
；
Figure 438471DEST_PATH_IMAGE037
arbors with one row or one column of edgesBIs arranged in a straight linel/2+l 1 The angle between the axial direction and the vertical direction of the soil nails at the tail ends of the geogrid strips,
Figure 805998DEST_PATH_IMAGE034
；
Figure 687104DEST_PATH_IMAGE014
resultant force of windFAngle of action line to row or column of crisscross laid geogrids 62
Figure 165490DEST_PATH_IMAGE014
，
Figure 481065DEST_PATH_IMAGE034
；
Figure 249520DEST_PATH_IMAGE038
The friction coefficient between the geotechnical grid bars 62 and the planting soil 4 is determined by field tests or by referring to relevant standard specifications;
Figure 916125DEST_PATH_IMAGE039
the soil balls 3 of the planting soil 4 and the arbor 2 are of the same weight, for simplifying calculation,
Figure 729360DEST_PATH_IMAGE040
；
Figure 165020DEST_PATH_IMAGE041
the vertically distributed loading of the geogrid strip 62,
Figure 576148DEST_PATH_IMAGE042
；
Figure 261207DEST_PATH_IMAGE043
respectively being arborsAThe upper geogrid 621 at the top of the soil ball 3 and the bottom of the soil ball、The fitted trigonometric function curve of the lower geogrid grid 622 and the distributed loads experienced,
Figure 81396DEST_PATH_IMAGE044
；
Figure 371563DEST_PATH_IMAGE045
arbors with one row or one column of edges respectivelyBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl 1 The curve and linear equation of the length of the geogrid strip, the distribution load suffered,
Figure 251794DEST_PATH_IMAGE046
；
Figure 128877DEST_PATH_IMAGE047
each being a treeAThe upper geogrid 621 and the lower geogrid 622 on the top of the soil ball 3 and the bottom of the soil ball are arrangeddxFrictional resistance in length andnmultiple times2lOne-row or one-column arbor with horizontal tension on lengthBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl 1 Length combined earthwork grid bardxThe friction resistance on the length of the utility model,
Figure 221597DEST_PATH_IMAGE042
；
Figure 631850DEST_PATH_IMAGE048
respectively for calculation of arborAOn the earthThe I-grid 621 and the lower I-grid 622 resist the combined wind forceFAgainst the combined force of horizontal tensionFThe horizontal tension of the geogrid bar during the moment,
Figure 479720DEST_PATH_IMAGE049
；
Figure 841169DEST_PATH_IMAGE050
arbors counting edges of a row or column, respectivelyBFrom the shape of a triangular cosine curvel/2The upper geogrid 621, the lower geogrid 622 and the straight line layout of the lengthl/2+l 1 Length to resist wind forcesFCombined force of horizontal tension and resistanceFThe horizontal tension force in the moment of force,
Figure 3160DEST_PATH_IMAGE049
；
Figure 736761DEST_PATH_IMAGE051
each being a treeAThe upper earthwork grid 621 and the lower earthwork grid 622 of the wind powerFHorizontal sliding stability coefficient, moment of tension and resultant force of windFThe lodging resistance stability factor of the moment;
Figure 958795DEST_PATH_IMAGE052
respectively being arborsBTension and wind combining force of earthwork grid barFHorizontal sliding stability coefficient, moment of tension and resultant force of windFThe lodging resistance stability factor of the moment.
The geogrid is a geosynthetic material, one or more of plastic geogrids, steel-plastic geogrids, glass fiber geogrids and high-strength polyester geogrids are selected, the geogrid strips 62 are strip geogrids cut to a certain width according to specification types and specifications specified by national standards or technical standards, and the strip width is larger than 3-10 cm of a soil ball in diameter.
And, go up the geogrid 621 and go down the soilThe I-grid 622 has the same model and specification, the names are distinguished due to different placement positions, and the I-grid 621 is arranged on the I-grid and the I-grid
Figure 828048DEST_PATH_IMAGE053
Laying, laying a lower geogrid 622 to
Figure 793730DEST_PATH_IMAGE054
Lay to go up geotechnological grid 621 and lower geotechnological grid 622 and alternate the intersection that forms the handing-over each other, during actual construction, go up geotechnological grid 621 and lower geotechnological grid 622 and do not alternate each other, and be located intersection 63 top promptly the middle level plant soil 42 top be upper geogrid 623, be located intersection 63 below promptly the middle level plant soil 42 below be lower floor's geogrid 624, this intersection 63 welds or ligatures.
The geogrid ring 61 is a finished product, an annular geogrid is cut, the diameter of an inner ring is 1-2 cm larger than the diameter of a trunk at the joint of a arbor 2 and a soil ball 3, and the diameter of an outer ring is 5-10 cm larger than the diameter of the soil ball 3. Radially cutting a department between inner ring and the outer loop to geogrid ring 61 can embolia the arbor trunk, and this geogrid ring 61 adopts geotechnological cloth winding ligature fixed with the arbor trunk, treats that the arbor trunk length increases greatly and suitably loosens the ligature promptly and does not influence arbor normal growth, and geogrid ring 61 external diameter department is fixed with ultrasonic bonding or ligature with geogrid bar 62.
The planting soil 4 is soil suitable for growth of transplanted trees 2, the fertilizer is fully decomposed, soil is added and mixed uniformly, the trees are transplanted by adopting a shallow-buried high-culture method generally, the planting soil 4 is separated by an upper geogrid 623 and a lower geogrid 624, lower planting soil 41 is arranged below the lower geogrid 624, middle planting soil 42 is arranged between the upper geogrid 623 and the lower geogrid 624, upper planting soil 43 is arranged above the upper geogrid 623, and the three layers of planting soil have the same character.
The arborABeing an intermediate arbor 2 in a row or column, said arborBBeing the trees 2 at the edges in the rows or columns. The soil nail 7 is made of steel reinforcing steel bars and is driven into the green land 1 for a certain length for fixing the geogrid bar 62。
The construction method of the underground lodging-resistant structure for transplanting the arbor can take a plurality of geotechnical grid bars 62 which are vertically and horizontally arranged in a cross shape 8 as an example, and comprises the following steps:
step one, drawing up the size of each part of the underground lodging-resistant structure for arbor transplantation and selecting related parameters
Figure 709733DEST_PATH_IMAGE055
According to design data and on-site climatic environment conditions, the sizes and the arrangement forms of all components of the underground lodging-resistant structure for transplanting the trees are preliminarily simulated, and the geogrid bars 62, the soil nail 7 materials and various safety coefficients are selected;
Figure 837089DEST_PATH_IMAGE056
calculating and rechecking by a formula I, a formula II and a formula III, determining the size and the arrangement form of each component of the underground lodging-resistant structure for transplanting the arbor, selecting the earthwork grid bars 62 and the soil nails 7, and selecting various safety factors;
(3) preparing materials of each component, manufacturing each component, compiling a construction organization design file, and organizing construction;
step two, leveling the green land, arranging planting holes and applying base fertilizer
Figure 674595DEST_PATH_IMAGE055
Measuring and lofting according to a design drawing, determining the plane position and elevation of the base fertilizer bottom surface of the planting holes 5 and the elevation of the lower-layer planting soil 41, and marking the filling and digging height by using bamboo sticks or wooden piles, wherein the filling and digging height comprises the bottom elevation of the linear geotechnical grid bars of the edge planting holes 5 in each row;
(2) leveling a green land 1, excavating and cleaning to the bottom surface of the base fertilizer of the planting hole 5, and applying the base fertilizer;
(3) backfilling the planting soil to the elevation of the lower planting soil 41, wherein the backfilling of the planting soil to the elevation of the bottom of the linear geotechnical grid bar of each row of edge planting holes is carried out, and the soil is appropriately compacted by a small-sized road roller or an excavator bucket;
step three, laying a lower-layer geogrid and transplanting arbor
Figure 411345DEST_PATH_IMAGE055
Cross-shaped 8-shaped geogrid bars 62 are paved at the elevation of the backfilled planting soil 4 in rows and columns and in a longitudinal and transverse mode, the geogrid bars comprise straight geogrid bars with planting holes at the edge of each row, the geogrid bars 62 can be lengthened by adopting lap joint or ultrasonic welding, and the lap joint length is 5 cm-10 cm:
(2) when the geogrid strips 62 are laid, the geogrid strips are tensioned along with laying, and finally the tail ends of the straight geogrid strips in the edge planting holes 5 are fixed through soil nails 7;
(3) the arbor 2 is transported to the site, and the earth ball 3 of the arbor is planted in the planting hole 5;
(4) temporarily supporting the arbor 2 with a wood bracket or a steel bracket;
backfilling the middle planting soil and laying the upper geogrid
Figure 650696DEST_PATH_IMAGE055
Backfilling the middle planting soil 42, and properly compacting by using a small road roller or an excavator bucket;
(2) placing a geogrid ring 61 on the top of a soil ball 3 of a tree 2, wherein radial cutting seams of an inner ring and an outer ring are welded by ultrasonic waves or are bound firmly by geotextile strips, and the inner ring of the geogrid ring 61 is wound and bound with a tree trunk by geotextile;
(3) an upper geogrid 623 is laid between two adjacent trees 2, the upper geogrid 623 and the outer ring of each geogrid ring 61 are welded or bound with each other, and the upper geogrid 623 and the outer ring are tensioned along with laying during laying, and are welded or bound firmly with the intersection 63 of the lower geogrid 624; the intersection of the curved geogrid strip of the edge planting hole and the linear geogrid strip is firmly welded or bound by ultrasonic waves;
step five, backfilling upper planting soil and removing the temporary support bracket
Figure 745691DEST_PATH_IMAGE055
Backfilling the upper planting soil 43, and properly compacting by using a small road roller or an excavator bucket;
(2) adjusting the verticality of the arbor 2, and dismantling the temporary support bracket after meeting the requirement;
(3) the primary maintenance after the arbor 2 is transplanted is carried out according to relevant standard specifications;
the geogrid bars 62 are arranged in a shape like a Chinese character 'X' and 9, namely, the geogrid bars rotate by an angle
Figure 70494DEST_PATH_IMAGE036
The cross-shaped 8 geogrid bars 62 are arranged in a formula I to a formula IIIlBy
Figure 613864DEST_PATH_IMAGE058
The arrangement of the X-shaped 9 or the cross-shaped 8 of the geogrid bar 62 can be selected according to the direction of the wind force, and the actual construction is also operated according to the method and the steps; if the geogrid strips 62 are arranged in a combination of the X-shaped 9 and the cross-shaped 8, namely the rice-shaped geogrid strips are arranged, the lodging-resistant safety performance of the arbor 2 is improved, and on the premise that the safety performance is met, the geogrid 62 of the cross-shaped 8 is arranged as far as possible, so that construction is facilitated.
The arrangement principle of the geogrid strips in the shape of the Chinese character 'mi' is consistent with the method and the steps, but is more simplified, and the method comprises the following steps:
the first step, the earth ball bottom of the arbor in each planting hole 5 is taken as the lowest point, the middle of two adjacent arbors 2 is taken as the highest point, and the rest parts are taken as arborsACosine curve of
Figure 442142DEST_PATH_IMAGE059
、
Figure 973618DEST_PATH_IMAGE060
Connecting and backfilling the lower layerPlanting soil 41, fully laying lower geogrid 624 and edge arborBFixing the tail ends of the straight geogrid strips by using soil nails;
step two, transplanting the trees 2, temporarily reinforcing the trees by adopting ground supports, backfilling middle-layer planting soil 42 on the lower-layer geogrid 624, namely filling no soil between every two adjacent trees 2, and backfilling the middle-layer planting soil 42 until the tops of soil balls 3 are flat, and appropriately compacting by using a small-sized road roller or an excavator bucket;
thirdly, laying a geogrid ring 61 on the top of each tree soil ball, winding and binding the geogrid ring with the tree trunk by using geotextile, fully laying an upper geogrid, welding or binding the upper geogrid ring with each geogrid ring by using ultrasonic waves, and firmly welding or binding the geogrid 623 and the geogrid 624 at the middle of two adjacent trees by using ultrasonic waves;
fourthly, backfilling upper planting soil 43 to the designed height on the fully paved upper geogrid, properly compacting by using a small road roller or an excavator bucket, firmly welding or binding the curved geogrid strips at the edge planting holes and the straight geogrid strips by using ultrasonic waves, and anchoring the tail ends of the straight geogrid strips by using soil nails 7.
The examples of the present invention are provided for illustration only and are not intended to limit the scope of the present invention. It should also be understood that various changes or modifications may be made by those skilled in the art after reading the teachings herein, and such equivalents are intended to fall within the scope of the invention as defined in the appended claims.

Claims (7)

1. The utility model provides an underground structure of lodging resistance is transplanted to arbor, includes and arranges a plurality of planting holes (5) of even rule according to multirow multiseriate mode on greenery patches (1), all transplants arbor (2) of taking soil ball (3) in every planting hole, its characterized in that a plurality of planting holes (5) on be equipped with the plane multi-disc with great ease and arrange geotechnological check bars (62) that are cross (8) or plane multi-disc diagonal cross arrangement are geotechnological check bars (62) of X font (9), geotechnological check bars (62) of every cross (8) or geotechnological check bars (62) of every X font (9) allVertically and repeatedly and alternately extending from the top of the soil ball (3) of one arbor (2) to the bottom of the soil ball (3) of the adjacent arbor (2); the top of each soil ball (3) is provided with a fixed geogrid ring (61), and the geogrid ring is fixed with each piece of cross-shaped (8) or each piece of geogrid strip (62) in the shape of X (9) passing through the top of the soil ball (3); the width of the plane multi-piece geogrid (62) which is arranged vertically and horizontally and is in a cross shape (8) is as follows
Figure 812618DEST_PATH_IMAGE001
The width of a plurality of planar geogrids (62) which are arranged in a diagonal crossing manner and are in a shape of X (9) is
Figure 401863DEST_PATH_IMAGE001
The two are combined and arranged to form the geogrid strip shaped like a Chinese character 'mi'; the soil ball grid structure is characterized in that each cross-shaped (8) soil ball grid strip (62) or each X-shaped (9) soil ball grid strip (62) is vertically arranged from the top of a soil ball (3) of one tree (2) to the bottom of a soil ball (3) of an adjacent tree (2) for multiple times in an extending and alternate mode, a vertical curve of the soil ball grid strip is fitted by a triangular cosine curve, the top and the bottom of the soil ball (3) of each tree (2) are wrapped by the triangular cosine curve-shaped soil ball grid strips (62), when the soil ball (3) under the influence of wind force of the trees (2) moves, friction force is generated between the soil ball grid strips (62) and planting soil (4), the top of the soil ball (3) is provided with an upper soil ball grid strip (621), the bottom of the soil ball is provided with a lower soil ball grid strip (622), and the soil (4) pressure is applied to the soil ball grid strips (622) respectivelyPAS(x)、PAX(x)Taking the geogrid bars (62) distributed in a cross shape (8) as an example, any given arbor in one row or one column of at least 4 arbors in the middle row or one column of the greening land (1)A(21) The arborA(21) Being an arbor (2) in the middle of a row or column, an arborARespectively formed by the tension of an upper geogrid (621) and a lower geogrid (622)T AS 、T AX Resisting combined wind forceF(ii) a For one rowOr a column of marginal treesB(22) The arborB(22) Being trees (2) at the edges in rows or columns, the treesB(22) From the shape of a triangular cosine curvel/2The upper geotechnical grid (621), the lower geotechnical grid (622) and the straight line of the length are arrangedl 1 Tension of length of geogrid (62) combination resists to shut wind forceF；According to the force balance principle, the geotechnical grid bar (62) resists the resultant forceFThe tension, the moment and the related calculation formula of the soil nail (7), wherein the soil nail (7) is a steel reinforcing steel bar and is driven into the green land (1) to fix the geogrid bars (62);
a formula I,
ArborA(21) The fitting trigonometric function curves of the upper geotechnical grid bars (621) and the lower geotechnical grid bars (622) and the pressure of the planting soil (4) on the single top and bottom cross-shaped pieces (8) of the soil ball (3) are as follows
Figure 712758DEST_PATH_IMAGE002
Row or column edge treesB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl 1 The curve and linear equation of the combination of the length of the soil engineering grid bars and the pressure of the planting soil (4) are
Figure 514492DEST_PATH_IMAGE003
The second formula,
ArborA(21) Earth ball (3) top and bottom upper geotechnical grid (621)、The earth work grid bars (622) are arrangeddxFrictional resistance in length andnmultiple times2lHorizontal tension, one-row or one-column edge arborB(22) The top and the bottom of the soil ball (3) are in the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl 1 Length of earth work griddxFrictional resistance in length andl/2+l 1 the horizontal tension of the length is
Figure 125602DEST_PATH_IMAGE004
Calculating arborA(21) Upper geotechnical grid (621)、Grid bar (622) for resisting combined wind forceFWhen the horizontal tension of
Figure 620169DEST_PATH_IMAGE005
Wherein
Figure 293727DEST_PATH_IMAGE006
Calculating arborA(21) Upper geotechnical grid (621)、The grid bars (622) of the lower earthwork use the earth ball bottom as the rotation point to resist the combined wind forceFHorizontal tension at moment of force of
Figure 23785DEST_PATH_IMAGE007
Wherein
Figure 364768DEST_PATH_IMAGE006
Arbors with calculation of edges of one row or columnB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl/2+l 1 Combined length resistant wind powerFWhen horizontally pulled
Figure DEST_PATH_IMAGE008
Wherein
Figure 561394DEST_PATH_IMAGE006
Arbors with calculation of edges of one row or columnB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl/2+l 1 Length combination wind force resisting force taking earth ball bottom as rotating pointFAt moment of horizontal tension of
Figure 722248DEST_PATH_IMAGE009
Wherein
Figure 945679DEST_PATH_IMAGE006
The formula III,
ArborA(21) The tension of the upper earthwork grid bar (621) and the lower earthwork grid bar (622) is opposite to the combined wind forceFThe stability factor at the time of horizontal sliding of (1) is required to satisfy
Figure DEST_PATH_IMAGE010
ArborA(21) Upper geotechnical grid (621)、Moment of gravity of grid bar (622) of lower earth workFThe stability factor of the resistance to lodging moment is required to meet
Figure DEST_PATH_IMAGE012
Row or column edge treesB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl/2+l1Combined length resistant wind powerFThe stability factor at the time of horizontal sliding needs to be satisfied
Figure 813272DEST_PATH_IMAGE014
Row or column edge treesB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl/2+l 1 Combined length resistant wind powerFThe stability factor of the lodging resistant moment is required to meet
Figure DEST_PATH_IMAGE016
The same row spacing and column spacing of the above calculation formulas arelAnd the row spacing and the column spacing are different, different spacings are used
Replacing a row space or a column space; resultant force of wind powerFThe direction of the angle is inclined with the geogrid bars arranged in a row or a column in a cross shape
Figure 446379DEST_PATH_IMAGE017
While in formula one, formula two and formula three
Figure 360108DEST_PATH_IMAGE018
Respectively by corresponding
Figure 166390DEST_PATH_IMAGE019
Replacing; the laying geogrid strips (62) in the shape of a cross (9) are calculated by the method, and the laying geogrid strips in the shape of a Chinese character 'mi' are superposed and calculated by the method;
the symbols in formula one, formula two and formula three are defined as:
Figure 216386DEST_PATH_IMAGE001
-the width of the geogrid strip (62),
Figure DEST_PATH_IMAGE020
；
Figure 754815DEST_PATH_IMAGE021
-the number of coefficients is,
Figure 155840DEST_PATH_IMAGE022
dimensionless;
Figure 765813DEST_PATH_IMAGE023
-arranging a uniform and regular half length of the distance between the centers of the planting holes (5) of each row and each column on the green land (1),
Figure 935894DEST_PATH_IMAGE020
；
Figure 238700DEST_PATH_IMAGE024
arbors with one row or column of edgesB(22) The length of the geogrid (62) is arranged in a straight line shape,
Figure 595863DEST_PATH_IMAGE020
；
Figure 150472DEST_PATH_IMAGE025
arbors with one row or column of edgesB(22) The length of the soil nails at the tail end of the geogrid bar (62) is arranged in a straight line shape,
Figure 34115DEST_PATH_IMAGE020
；
Figure 648767DEST_PATH_IMAGE026
arborA(21) Required geogrid (62) arrangement horizontal length to meet horizontal stability and lodging resistance requirements divided by2l，Namely the number of the periods of the cosine trigonometric function fitted at 2 times of the distance of the arbor;
Figure 617860DEST_PATH_IMAGE027
arbors with edges in one row or one column respectivelyB(22) From the shape of a triangular cosine curvel/2The upper geogrid strip (621) and the lower geogrid strip (622) in length and the arbor which is linearly arranged and has the soil nail number or one row or one column of edge and the tail end of which meets the requirement of horizontal sliding stabilityBFrom the shape of a triangular cosine curvel/2The upper geotechnical grid (621), the lower geotechnical grid (622) and the straight line of the length are arrangedl/2+l 1 Combined resisting combined wind forceFThe number of the soil nails required by the drawing safety factor of the soil nails (7) is large when the lodging resistant torque is applied;
Figure 445001DEST_PATH_IMAGE028
the arbor (2) is transplanted to the radius of the soil ball (3),
Figure 448729DEST_PATH_IMAGE020
；
Figure 234283DEST_PATH_IMAGE029
-the diameter of the soil nail (7),
Figure 831617DEST_PATH_IMAGE020
；
Figure 587084DEST_PATH_IMAGE030
the height from the bottom surface of the soil ball (3) transplanted by the arbor (2) to the top surface of the planting soil (4),
Figure 55105DEST_PATH_IMAGE020
；
Figure 870615DEST_PATH_IMAGE031
-the horizontal resultant force of the wind to which the arbor (2) is subjected is determined by field test tests or with reference to relevant standard specifications, according to the external dimensions of the arbor (2) and the climatic conditions of the field,
Figure 949386DEST_PATH_IMAGE032
；
Figure 383909DEST_PATH_IMAGE033
the arbor (2) is transplanted to the bottom of the soil ball (3) to the height of the resultant force of the wind,
Figure 96651DEST_PATH_IMAGE020
；
Figure 958427DEST_PATH_IMAGE034
the half height of the soil ball (3) transplanted by the arbor (2) is taken as the original pointOThe horizontal abscissa value of (a) is,
Figure 389409DEST_PATH_IMAGE020
；
Figure 627623DEST_PATH_IMAGE035
the half height of the soil ball (3) transplanted by the arbor (2) is taken as the original pointOIs
Figure 335816DEST_PATH_IMAGE034
The equation of the cosine trigonometric function of (c),
Figure 493128DEST_PATH_IMAGE020
；
Figure 552351DEST_PATH_IMAGE036
by treesA(21) And arborB(22) Half height of the transplanting soil ball (3) isOrigin pointOIs/are as follows
Figure 594256DEST_PATH_IMAGE034
Tangent of the triangular cosine curve and
Figure 16010DEST_PATH_IMAGE034
the included angle of the axes is set by the angle,
Figure 485169DEST_PATH_IMAGE037
；
Figure 500529DEST_PATH_IMAGE038
arbors with one row or column of edgesB(22) Is arranged in a straight linel/2+l 1 Geomatics grid bar shape and
Figure 205180DEST_PATH_IMAGE034
the included angle of the axes is set by the angle,
Figure 887965DEST_PATH_IMAGE037
；
Figure 528025DEST_PATH_IMAGE039
an included angle between the geotechnical grid bar (62) of the X-shaped (9) and the geotechnical grid bar (62) of the cross shape (8),
Figure 420895DEST_PATH_IMAGE037
；
Figure 539024DEST_PATH_IMAGE040
arbors with one row or one column of edgesB(22) Is arranged in a straight linel/2+l 1 The angle between the axial direction and the vertical direction of the soil nails at the tail ends of the geogrid strips,
Figure 76315DEST_PATH_IMAGE037
；
Figure 746331DEST_PATH_IMAGE017
resultant of wind forcesFThe angle of action line to one row or column of criss-cross geogrids (62)
Figure 1863DEST_PATH_IMAGE017
，
Figure 923683DEST_PATH_IMAGE037
；
Figure 705694DEST_PATH_IMAGE041
-the friction coefficient between the geogrid bars (62) and the planting soil (4) is determined by field tests or by reference to relevant standard specifications;
Figure 421977DEST_PATH_IMAGE042
the soil balls (3) of the planting soil (4) and the arbor (2) are of the same weight, and for simplifying calculation, the planting soil (4) and the soil balls (3) are taken as the same weight,
Figure 158946DEST_PATH_IMAGE043
；
Figure 743511DEST_PATH_IMAGE044
-the vertical distribution load of the geogrid (62),
Figure 255395DEST_PATH_IMAGE045
；
Figure 267213DEST_PATH_IMAGE046
each being a treeA(21) The top and the bottom of the soil ball (3)Upper geotechnical grid (621)、Fitting trigonometric function curve of the lower geogrid bar (622) and the distribution load,
Figure 231758DEST_PATH_IMAGE047
；
Figure 495380DEST_PATH_IMAGE048
arbors with one row or one column of edges respectivelyB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl 1 The curve and linear equation of the length of the geogrid strip, the distribution load suffered,
Figure 986405DEST_PATH_IMAGE049
；
Figure 44490DEST_PATH_IMAGE050
each being a treeA(21) The upper geogrid (621) and the lower geogrid (622) at the top and the bottom of the soil ball (3) are arranged ondxFrictional resistance in length andnmultiple times2lHorizontal tension, one-row or one-column edge arborB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl 1 Length combined earthwork griddxThe friction resistance on the length of the steel pipe is improved,
Figure 761911DEST_PATH_IMAGE045
；
Figure 953858DEST_PATH_IMAGE051
respectively calculation of arborA(21) The upper earthwork grid bar (621) and the lower earthwork grid bar (622) resist the combined wind forceFHorizontal tension ofCombined force of time and windFThe horizontal tension of the geogrid bar during the moment,
Figure 909175DEST_PATH_IMAGE052
；
Figure 669321DEST_PATH_IMAGE053
arbors counting edges of a row or column, respectivelyB(22) From the shape of a triangular cosine curvel/2The upper geogrid (621), the lower geogrid (622) and the straight line of the length are arrangedl/2+l 1 Length resisting resultant forceFCombined force of horizontal tension and resistanceFThe horizontal tension force in the moment of force,
Figure 467513DEST_PATH_IMAGE052
；
Figure 338517DEST_PATH_IMAGE054
respectively being arborsA(21) The upper geogrid (621) and the lower geogrid (622) have tension and wind combining forceFHorizontal sliding stability factor, moment of tension and resultant force of windFThe lodging resistance stability coefficient of the moment;
Figure 272975DEST_PATH_IMAGE055
respectively being arborsB(22) Tension and wind combining force of earthwork grid barFHorizontal sliding stability coefficient, moment of tension and resultant force of windFThe lodging resistance stability factor of the moment.
2. The underground lodging-resistant structure for transplanted arbors according to claim 1, wherein the geogrid is a geosynthetic material, and one or more of a plastic geogrid, a steel-plastic geogrid, a glass fiber geogrid and a high-strength polyester geogrid are selected; the geogrid (62) is specified according to national standard or row standardCutting a strip geogrid with a certain width from the specification type fixed-length finished product, wherein the strip width is larger than the diameter of a soil ball (3) by 5-10cm; the upper geotechnical grid (621) and the lower geotechnical grid (622) have the same model and specification, the names are distinguished due to different placement positions, and the upper geotechnical grid (621) is connected with the lower geotechnical grid
Figure 938442DEST_PATH_IMAGE056
Laying, laying earth grid bars (622) to
Figure 364876DEST_PATH_IMAGE057
And laying, wherein the upper geogrid (621) and the lower geogrid (622) are mutually inserted to form a junction (63) of the connection, an upper geogrid (623) is located above the junction, namely above the middle-layer planting soil, and a lower geogrid (624) is located below the junction (63), namely below the middle-layer planting soil.
3. The underground anti-lodging structure for transplanted arbors according to claim 1, wherein the geogrid rings (61) are annular geogrids cut from finished products, the diameter of the inner ring of each geogrid ring is 1-2 cm larger than the diameter of a trunk at the joint of the arbors (2) and the earth ball (3), and the diameter of the outer ring of each geogrid ring is 5-10 cm larger than the diameter of the earth ball (3).
4. The underground lodging-resistant structure for transplanted arbor trees as claimed in claim 2, wherein the planting soil (4) is soil suitable for the growth of transplanted arbor trees (2), the planting soil (4) is separated by the upper geogrid (623) and the lower geogrid (624), the lower planting soil (41) is arranged below the lower geogrid (624), the middle planting soil (42) is arranged between the upper geogrid (623) and the lower geogrid (624), the upper planting soil (43) is arranged above the upper geogrid (623), and the three planting soils have the same properties.
5. The underground lodging-resistant structure for transplanted arbor trees as claimed in claim 1, wherein the soil balls (3) are the parts dug up together with the soil around the root system for transplanting when the arbor trees (2) are transplanted, the size of the soil balls (3) is determined according to the specification of the arbor trees, and the shape is hemispherical or segmental.
6. The underground lodging-resistant structure for arbor transplantation according to claim 1, wherein the planting hole (5) is a position for transplanting the arbor (2), the diameter of the planting hole (5) is increased by 60cm-80cm according to the root system of the arbor (2) or the diameter of the earth ball (3), the depth is increased by 20cm-40cm, and the hole wall is vertical.
7. A construction method of a tree-transplanted underground lodging-resistant structure according to claim 1, characterized in that the construction method comprises the following steps, taking a plurality of planar geogrids (62) arranged in a criss-cross manner (8) as an example:
step one, drawing sizes of all parts of the underground lodging-resistant structure for transplanting arbor and selecting related parameters
Figure 633046DEST_PATH_IMAGE058
According to design information and on-site climatic environment conditions, the size and arrangement form of each part of the underground lodging-resistant structure for transplanting the trees are preliminarily simulated, and the materials of the geogrid strips (62) and the soil nails (7) and various safety coefficients are selected;
Figure 828535DEST_PATH_IMAGE059
calculating and rechecking by a formula I, a formula II and a formula III, determining the size and the arrangement form of each component of the underground lodging-resistant structure for transplanting the arbor, selecting the geogrid bars (62), the soil nail (7) materials and various safety factors;
(3) preparing materials of each component, manufacturing each component, compiling a construction organization design file, and organizing construction;
step two, leveling the green land, arranging planting holes and applying base fertilizer
Figure 789538DEST_PATH_IMAGE058
Measuring and lofting according to a design drawing, determining the plane position and elevation of the bottom surface of the base fertilizer of the planting holes (5) and the elevation of the lower planting soil (41), and marking the filling and digging height by using bamboo sticks or wooden piles, wherein the filling and digging height comprises the bottom elevation of the linear geotechnical grid bars of each row of edge planting holes (5);
(2) leveling a green land (1), excavating and cleaning to the bottom surface of the base fertilizer of the planting hole (5), and applying the base fertilizer;
(3) backfilling the planting soil to the elevation of the lower planting soil (41), wherein the backfilling of the planting soil to the bottom elevation of the linear geotechnical grid bars (62) of the edge planting holes of each row is carried out, and the soil is appropriately compacted by a small road roller or an excavator bucket;
step three, laying a lower-layer geogrid and transplanting arbor
Figure 437688DEST_PATH_IMAGE058
Criss-cross geogrid bars (62) are paved at the elevation of the backfilled planting soil (4) in rows and columns, the geogrid bars comprise linear geogrid bars (62) of edge planting holes (5) of each row, the geogrid bars are lengthened by adopting lap joint or ultrasonic welding, and the lap joint length is 5 cm-10 cm:
(2) when the earthwork grid bar (62) is laid, the earthwork grid bar is tensioned along with the laying, and finally the tail end of the straight earthwork grid bar (62) of the edge planting hole (5) is fixed by a soil nail (7);
(3) the arbor (2) is transported to the site, and the earth ball (3) of the arbor is planted in the planting hole (5);
(4) temporarily supporting the arbor (2) with a wood or steel support;
backfilling the middle planting soil and paving the upper geogrid
Figure 650495DEST_PATH_IMAGE058
Backfilling the middle planting soil (42), and properly compacting by a small road roller or an excavator bucket;
(2) placing a geogrid ring (61) on the top of a soil ball (3) of a tree (2), wherein radial cutting seams of an inner ring and an outer ring are welded by ultrasonic waves or are firmly bound by geotextile strips, and the inner ring of the geogrid ring (61) is wound and bound with a tree trunk by geotextile;
(3) an upper geogrid (623) is laid between two adjacent trees (2), the upper geogrid (623) and the outer ring of each geogrid ring (61) are welded or bound with each other, and are tensioned along with laying during laying, and the upper geogrid and the lower geogrid (624) are welded or bound firmly with each other at the junction (63); the junction of the curved geogrid strip and the straight geogrid strip of the edge planting hole (5) is welded or bound firmly by ultrasonic wave;
fifthly, backfilling the upper planting soil and removing the temporary support bracket
Figure 966069DEST_PATH_IMAGE058
Backfilling the upper planting soil (43), and properly compacting by using a small road roller or an excavator bucket;
(2) adjusting the verticality of the arbor (2), and dismantling the temporary support bracket after meeting the requirements;
(3) the primary maintenance after the arbor (2) is transplanted is carried out according to relevant standard specifications;
the geogrid (62) is arranged in a shape of X (9) and is rotated by an angle
Figure 832394DEST_PATH_IMAGE060
The geogrid bars (62) in a cross shape (8) are arranged in a formula I to a formula IIIlBy
Figure DEST_PATH_IMAGE061
The arrangement of the multiplied line shape (9) or the cross shape (8) of the geogrid strip (62) can be selected according to the direction of wind force;
the laying principle of the double-layer geogrid is consistent with the method and the steps, but is more simplified, and the method comprises the following steps:
the first step is to take the earth ball bottom of the arbor in each planting hole (5) as the lowest point, the middle of two adjacent arbors (2) as the highest point, and the rest parts are the arborsA(21) Cosine curve of
Figure DEST_PATH_IMAGE062
、
Figure DEST_PATH_IMAGE063
Connecting and backfilling the lower planting soil (41), fully laying the lower geogrid (624), and arranging the edge arborB(22) Fixing the tail ends of the straight geogrid strips by using soil nails;
transplanting the trees (2), temporarily reinforcing the trees by adopting ground supports, backfilling middle-layer planting soil (42) on the lower-layer geogrid (624), namely, not filling soil between every two adjacent trees (2), and backfilling the middle-layer planting soil (42) to the top of a soil ball (3) until the tops of the soil balls are level, and properly compacting by using a small-sized road roller or an excavator bucket;
thirdly, laying a geogrid ring (61) on the top of each arbor soil ball, winding and binding the geogrid ring with the arbor trunk by using geotextile, fully laying an upper geogrid, welding or binding the geogrid ring with each geogrid ring by using ultrasonic waves, and firmly welding or binding the geogrid ring with the upper geogrid (623) and the geogrid ring (624) at the intersection of the upper geogrid and the lower geogrid at the middle of two adjacent arbors by using ultrasonic waves;
and fourthly, backfilling the upper planting soil (43) to the designed height on the fully paved upper geogrid, properly compacting by a small road roller or an excavator bucket, firmly welding or binding the intersection of the curved geogrid strips with the edge planting holes and the linear geogrid strips by ultrasonic waves, and anchoring the tail ends of the linear geogrid strips by soil nails (7).
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CN105660310A (en) * 2014-11-17 2016-06-15 上海园林绿化建设有限公司 Construction method for full-crown translation of large-size trees by using dual-layer underpinning composite lantern method
CN106472238A (en) * 2016-11-10 2017-03-08 厦门理工学院 A kind of device resistant to lodging for reinforcing tree root
CN107182699A (en) * 2017-07-13 2017-09-22 上海园林绿化建设有限公司 Monoblock type arbor ground prop construction
CN112166927A (en) * 2020-10-15 2021-01-05 广州普邦园林股份有限公司 Planting method for improving typhoon resistance of arbor in south coastal region
CN112385442A (en) * 2020-12-08 2021-02-23 中节能大地（杭州）环境修复有限公司 Vertical rock wall greening device for abandoned mine and installation method thereof
CN216134938U (en) * 2021-08-16 2022-03-29 宁波交通工程建设集团有限公司 Underground lodging-resistant structure for arbor transplantation

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US11700800B2 (en) * 2018-11-30 2023-07-18 Joseph Edward Rodriguez Protective tree tube, method, and revetment using tree contained in same

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Publication number Priority date Publication date Assignee Title
CN105660310A (en) * 2014-11-17 2016-06-15 上海园林绿化建设有限公司 Construction method for full-crown translation of large-size trees by using dual-layer underpinning composite lantern method
CN106472238A (en) * 2016-11-10 2017-03-08 厦门理工学院 A kind of device resistant to lodging for reinforcing tree root
CN107182699A (en) * 2017-07-13 2017-09-22 上海园林绿化建设有限公司 Monoblock type arbor ground prop construction
CN112166927A (en) * 2020-10-15 2021-01-05 广州普邦园林股份有限公司 Planting method for improving typhoon resistance of arbor in south coastal region
CN112385442A (en) * 2020-12-08 2021-02-23 中节能大地（杭州）环境修复有限公司 Vertical rock wall greening device for abandoned mine and installation method thereof
CN216134938U (en) * 2021-08-16 2022-03-29 宁波交通工程建设集团有限公司 Underground lodging-resistant structure for arbor transplantation

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