CN113439593B - Filling construction area tree on-site protection structure and construction method - Google Patents

Abstract

The invention provides an in-situ protection structure for trees in a filling construction area and a construction method thereof, comprising an in-situ protection structure for trees and a nutrient supply system combined together; Composition; the nutrient supply system is composed of nutrient soil at the bottom of the tree pond, nutrient soil outside the retaining wall and the bottom of the retaining wall. The nutrient soil at the bottom of the tree pond and the nutrient soil outside the retaining wall are connected through a flood discharge channel at the bottom of the retaining wall. The present invention preserves and protects ancient trees of a certain age, famous trees or trees with certain landscape ornamental value in the engineering construction area, improves the retention utilization rate and survival rate of the original trees in the construction area, and improves the quality of the trees in the construction area. Ecological environment, reduce engineering cost.

Description

An in-situ protection structure and construction method for trees in a filling construction area

technical field

The invention relates to the field of on-site protection of trees with long ages and certain landscape effects in the urban landscape construction area, and particularly relates to the protection structure and construction method for trees in the filling construction area to improve the existing trees in the construction area. The retained utilization rate and survival rate can be improved to improve the ecological environment in the construction area.

Background technique

There are older trees in the urban construction and supporting project construction area, including ancient trees, famous trees and trees with certain landscape ornamental value. These trees are precious local cultural and ecological landscape resources. In some engineering projects, the original trees are usually cut down first, and then landscape trees are planted in the later stage of landscape construction. This practice will usually cause damage to some ancient and famous trees in the project construction area. Relevant national departments have issued relevant laws and regulations to protect them. Ancient trees, famous trees.

With the rapid development of urban construction and supporting engineering construction, the problem of how to effectively protect ancient and famous trees in urban construction areas has become increasingly prominent. At present, tree protection in urban construction areas mainly includes transplanting protection or in-situ protection, and the in-situ protection scheme has the advantages of reducing engineering costs, high tree survival rate, and not destroying the ecological environment. The best choice for famous wood.

Urban construction projects usually increase the elevation of the original ground, and the backfill construction area formed by the elevation of the ground usually has a great impact on the growth quality of the original trees in the construction area. Buried tree trunks or too deep rooting will easily cause dull roots and affect the survival rate of trees; even if trees can survive in the backfill area, the overall growth of trees will be greatly affected in the future.

Contents of the invention

The purpose of the present invention is: aiming at the above-mentioned existing problems, propose an in-situ protection structure for trees in the filling construction area and its construction method.

According to the first aspect of the present invention, the present invention provides an in-situ protection structure for trees in a filling construction area. For this reason the present invention adopts following technical scheme:

An in-situ protection structure for trees in a filling construction area, characterized in that it includes an in-situ protection structure for trees and a nutrient supply system combined together;

The tree in-situ protection structure is composed of a tree pool and a pool mouth protection net structure; the tree pool includes foundation piers, concrete lintels, surrounding retaining walls and drainage pipes, and the retaining wall foundation piers are embedded in the original soil The pier-type structure is within a certain depth range of the layer and is higher than the original ground at a certain height. The concrete lintel is built on the foundation pier and forms a flood discharge channel at the bottom of the retaining wall between the concrete lintel and the original ground. Nutrient circulation channels in the nutrient soil inside and outside the retaining wall;

The protective net structure is provided with a manhole;

The nutrient supply system is composed of nutrient soil at the bottom of the tree pond, nutrient soil outside the retaining wall and the bottom of the retaining wall. The nutrient soil at the bottom of the tree pond and the nutrient soil outside the retaining wall are connected through the flood discharge channel at the bottom of the retaining wall.

The protective net is fixed at the mouth of the tree pool, supported by a protective net supporting structure in the middle, and slopes upward to form a certain slope.

The nutrient soil at the bottom of the tree pond is filled at the bottom of the tree pond to directly provide nutrients for the trees to be protected; the nutrient soil outside the retaining wall is filled around the retaining wall, and under the action of rainwater, the nutrients in the nutrient soil pass through the flood discharge channel at the bottom of the retaining wall The nutrient soil at the bottom connects and enters the nutrient soil in the tree pool to provide nutrients for the trees to be protected.

The protection structure of the present invention is used for the protection of trees in the filling construction area. The tree pool surrounded by the retaining wall is used to isolate the backfilled earthwork from the trees to be protected, so as to prevent the backfilled earthwork from burying the tree trunks; the safety net is used to prevent foreign objects from impacting on the trees. And prevent people from falling; use the nutrient soil on the outside of the tree pond retaining wall and the bottom of the tree pond to provide nutrients for the trees; use the flood discharge channel set under the tree pond retaining wall to connect the nutrient circulation in the nutrient soil inside and outside the retaining wall, and prevent construction The damage of the retaining wall to the roots of the tree and the limitation of its outward extension. The protection structure can not only improve the retention and utilization rate of the original trees in the construction backfill area, but also maintain the growth quality of the original trees.

According to another aspect of the present invention, the present invention provides a construction method for in-situ protection of trees in a filling construction area. For this reason, the present invention adopts following technical scheme:

A construction method for in-situ protection of trees in a filling construction area is characterized in that it comprises the following steps:

(1) Excavate foundation trenches around trees and build foundation piers, which are a certain distance above the original ground;

(2) Concrete lintels are poured on the foundation piers; the concrete lintels are separated from the original ground by a certain distance to form a flood discharge channel at the bottom of the retaining wall;

(3) Build a retaining wall on the concrete lintel, and pre-install drainage pipes and set ladders in the retaining wall;

(4) Layer-by-layer backfill nutrient soil within the tree canopy outside the retaining wall, the nutrient soil outside the retaining wall and the nutrient soil laid at the bottom of the tree pool are connected through the flood discharge channel at the bottom of the retaining wall; flat earthwork;

(5) Install a light-transmitting protective net on the top of the retaining wall, and reserve a manhole. The position of the manhole is aligned with the position of the ladder inside the retaining wall.

(6) Arrange landscape green belts on the surface of nutrient soil around the retaining wall.

Before building the retaining wall, lay the nutrient soil at the bottom of the tree pond, or replace the nutrient soil with a thickness of not less than 50cm around the tree roots.

The beneficial effects of the present invention are:

(1) The present invention retains and protects ancient trees with a certain age in the project construction area, famous trees or trees with certain landscape ornamental value, improves the retention utilization rate and survival rate of the original trees in the construction area, and improves Ecological environment in the construction area.

(2) The present invention effectively balances the mutual relationship between site heightening and tree growth in the construction area by adopting an effective protection structure for the original trees in the construction area, ensures the normal growth of the original trees, and reduces the engineering cost.

(3) The present invention prevents backfill soil from burying the trunk by setting fence structures around the trees, effectively guarantees the normal rooting depth and growth space of the trees, and maintains or improves the growth quality of the native trees.

(4) The present invention utilizes a safety protection net to be set on the top of the retaining wall of the tree pond to prevent children from accidentally falling and prevent human activities from causing damage to the trees. Clean up the accumulated dead leaves and debris;

(5) The present invention ensures the effective communication between the tree root and the surrounding soil by setting the nutrient supply system, and improves the timeliness of the nutrient supply such as the water content of the tree root.

Description of drawings

Fig. 1 is a schematic longitudinal section of the present invention.

Fig. 2 is a schematic cross-sectional view of the A-A section of the present invention.

Fig. 3 is a B-B sectional schematic view of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

As shown in Fig. 1, Fig. 2, and Fig. 3, the objects involved in the in-situ protection structure and construction method of trees in a filling construction area according to the present invention include a protective net 1, a protective net support 2, a tree pool retaining wall 3, Concrete lintel 4, maintenance ladder 5, foundation pier 6, nutrient soil outside the retaining wall 7, original soil layer 8, retaining wall drainage pipe 9, nutrient soil at the bottom of the tree pond 10, landscape green belt 11, manhole 12, proposed protection Trees 13, flood discharge channel at the bottom of the retaining wall 14, and backfill earthwork 15 for construction area leveling.

The retaining wall foundation pier 6 is a pier-shaped structure embedded within a certain depth range of the original soil layer 8 and higher than the original ground by a certain height, providing support for the concrete lintel 4, and the retaining wall foundation pier 6 The structural form can choose stone masonry foundation or concrete pouring foundation according to the original soil layer.

The concrete lintel 4 is a concrete beam structure supported on the foundation pier 6 of the retaining wall, and provides a building platform for the retaining wall of the tree pool. A flood discharge channel 14 at the bottom of the retaining wall is left between the concrete lintel 4 and the original ground, which can be used as a connecting channel for planting substrates, and its width is consistent with the spacing between the foundation piers 6 of the retaining wall, close to the width of the tree pond.

The tree pool retaining wall 3 is a retaining structure built on the concrete lintel 4, the size of the tree pool retaining wall 3 is determined according to the root system distribution range of the trees to be protected, and the surrounding tree pool retaining walls form a rectangular tree. pool.

The protective net 1 is a light-transmitting steel wire mesh, which is installed on the top of the tree pool retaining wall 3, that is, at the mouth of the tree pool. It is arranged around the trunk, and its plane shape is trapezoidal. The slope is used to prevent people from falling and accidental damage to trees caused by human activities. At the same time, the dead branches and leaves of trees can slide down along the protective net, which is convenient for cleaning personnel to clean.

One end of the protective net support 2 is fixed on the tree pond retaining wall 3, and the other end is connected with the protective net 1 for supporting the protective net and preventing the protective net from collapsing.

The manhole 12 is a hole reserved on the protective net 1 and has a mesh door for maintenance personnel to enter and exit.

The maintenance ladder 5 is a U-shaped steel bar fixed on the retaining wall 3 of the tree pond, for maintenance personnel to go up and down the tree pond.

The drainpipe 9 is a pre-buried pipeline, located below the concrete lintel 4, its inlet is basically flush with the bottom of the tree pool, and its outlet is connected to the external drainage system to discharge the accumulated water in the tree pool to prevent the trees from being protected for a long time. Soaked by waterlogging.

The nutrient soil 7 outside the tree pond is located between the tree pond retaining wall 3 and the backfilled compacted earthwork 15, and under the action of rainwater, the nutrients in the tree pond external nutrient soil are transported through the flood discharge channel 14 at the bottom of the retaining wall 13 for trees to be protected.

The nutrient soil 10 at the bottom of the tree pond is located at the bottom of the tree pond and provides nutrition for the trees to be protected. It connects with the nutrient soil 7 outside the tree pond through the flood discharge channel 14 at the bottom of the retaining wall to provide nutrition for the trees to be protected and receive nutritional supplements.

The landscape green belt 11 is located around the tree pond, and can be used for planting landscape flowers and plants or arranging landscape lights for beautifying the trees to be protected and improving the landscape effect of the trees to be protected.

As shown in Figures 1 to 3, the above-mentioned construction method for in-situ protection of trees in the filling construction area includes the following steps:

a. According to the root system distribution of the trees to be protected, excavate the foundation pier foundation groove around the trees to be protected and build the foundation pier 6. The buried depth and size of the foundation pier are determined according to the weight of the retaining wall 3 and the settlement of the foundation. The height of the foundation pier 6 A certain distance from the original ground.

b. Concrete lintel 4 is poured on foundation pier 6. The size of concrete lintel 4 is calculated and determined according to the weight of upper retaining wall 3. According to the calculation result, plain concrete beam or reinforced concrete beam is selected. Between concrete lintel 4 and the original ground spaced at a certain distance to form a channel 14 at the bottom of the retaining wall;

c. Build the retaining wall 3 on the concrete lintel 4, and pre-embed the ladder 5 on the retaining wall 3, and pre-install the drain pipe 9 at the bottom of the retaining wall. The drain pipe 9 is connected with the external drainage system, and the retaining wall 3 can be bricked. form or concrete pour;

D, backfill the nutritional soil 7 outside the retaining wall 3 peripherals, backfill the compacted earth 71 outside the retaining wall nutrient soil 7, lay the nutritious soil 10 at the bottom of the tree pool surrounded by the retaining wall 3; the nutritional soil and the outer retaining wall The nutrient soil laid at the bottom of the tree pond is connected by the flood discharge channel 14 at the bottom of the retaining wall, and one or both of the nutrient soil 7 and the nutrient soil 10 outside the retaining wall are filled into the flood discharge channel 14 at the bottom of the retaining wall to continue the nutrient soil.

e. Install the light-transmitting protective net 1 and the protective net support 2 on the retaining wall 3, and reserve a manhole 12 with a mesh door on the light-transmitting protective net.

f. Arrange a landscape green belt 11 on the surface of the nutrient soil 7 outside the retaining wall outside the retaining wall.

The method disclosed in the invention protects the trees in the filling construction area in situ, prevents the trunks of the trees to be protected from being buried by backfilling earthwork, prevents accidental damage to the trees caused by personnel falling and human activities, and makes the dead branches and fallen leaves of the trees along the protective net Sliding down, it is convenient for cleaning personnel to clean up; it provides sufficient nutrients for the trees to be protected, and improves the timeliness of tree nutrient supply.

The above are only preferred embodiments of the present invention, and are not used to limit the implementation scope of the present invention, that is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention, and are not intended here. Give another example.

Claims (3)

1. A filling construction area tree in-situ protection structure is characterized by being used for in-situ reserving and protecting trees with landscape ornamental values in an engineering construction area, wherein the trees with the landscape ornamental values comprise ancient trees and famous trees;

the on-site tree protection structure in the fill construction area comprises an on-site tree protection structure and a nutrient supply system which are combined together;

the on-site tree protection structure consists of a tree pool and a pool opening protection net structure; the tree pool comprises foundation piers, concrete lintels, surrounding retaining walls and drain pipes, wherein the foundation piers are pier-shaped structures which are embedded in an original soil layer within a certain depth range and are higher than the original ground by a certain height;

the protective net structure is arranged in a manhole;

the nutrient supply system consists of tree pond bottom nutrient soil, retaining wall outside nutrient soil and retaining wall bottom, and the tree pond bottom nutrient soil and the retaining wall outside nutrient soil are connected through the retaining wall bottom flood discharge channel;

nutrient soil at the bottom of the tree pool is paved at the bottom of the tree pool to directly provide nutrients for the trees to be protected; nutrient soil outside the retaining wall is filled around the retaining wall, and under the action of rainwater, nutrients in the nutrient soil are connected through the nutrient soil at the bottom of the flood discharge channel at the bottom of the retaining wall and enter the tree pool to provide nutrients for trees to be protected;

the construction method of the on-site tree protection structure in the filling construction area comprises the following steps:

(1) Excavating a foundation trench around the tree and building a foundation pier, wherein the foundation pier is higher than the original ground by a certain distance;

(2) Pouring a concrete lintel on the foundation pier; a certain distance is reserved between the concrete lintel and the original ground to form a flood discharge channel at the bottom of the retaining wall;

(3) Building a retaining wall on the concrete lintel, presetting a drain pipe and arranging a ladder in the retaining wall;

(4) Backfilling nutrient soil in a layered manner in the range of a crown on the periphery of the retaining wall, wherein the nutrient soil outside the retaining wall is connected with the nutrient soil laid at the bottom of the tree pool through a flood discharge channel at the bottom of the retaining wall; backfilling field flat earthwork in a layered manner at the periphery of nutrient soil outside the retaining wall;

(5) A light-transmitting protective net is arranged at the top of the retaining wall, a manhole is reserved, and the manhole is aligned with the ladder stand inside the retaining wall;

(6) And arranging landscape green belts on the surface layer of the nutrient soil on the periphery of the retaining wall.

2. The in-situ tree protection structure for a fill construction area according to claim 1, wherein the protection net is fixed at the mouth of the tree pool, supported by a protection net support structure in the middle, and inclined upward to form a certain slope.

3. The in-situ tree protection structure for a fill construction area according to claim 1, wherein a nutrient soil at the bottom of a tree pool is laid before the construction of the retaining wall, or a nutrient soil having a thickness of not less than 50cm is replaced around the roots of the tree.

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