阅读说明：本技术 一种园林建设中基坑回填结构及施工方法 (foundation pit backfill structure in garden construction and construction method ) 是由 房晓峰 刘雅民 李国豪 王晓梦 于 2019-09-05 设计创作，主要内容包括：本发明涉及园林建设技术领域,公开了一种园林建设中基坑回填结构及施工方法,所述园林建设中基坑回填结构包括底层和面层,所述底层铺设于基坑的底面,所述面层铺设于所述底层上,且其上表面与地面齐平,所述面层由种植土铺设而成,所述面层的厚度为10-90厘米。本发明提供的园林建设中基坑回填结构及施工方法,通过设置面层,并采用种植土铺设,使得需要在铺设完毕的基坑上种植树木时可以直接种植,不用对回填好的基坑进行换土作业,保证施工效率。本发明使用效果好,易于推广使用。(The invention relates to the technical field of garden construction, and discloses a foundation pit backfill structure in garden construction and a construction method thereof, wherein the foundation pit backfill structure in garden construction comprises a bottom layer and a surface layer, the bottom layer is laid on the bottom surface of a foundation pit, the surface layer is laid on the bottom layer, the upper surface of the surface layer is flush with the ground, the surface layer is laid by planting soil, and the thickness of the surface layer is 10-90 cm. According to the foundation pit backfilling structure and the construction method in garden construction, the surface layer is arranged, planting soil is adopted for laying, trees can be directly planted when the trees are planted on the laid foundation pit, soil replacement operation is not needed for the backfilled foundation pit, and construction efficiency is guaranteed. The invention has good use effect and is easy to popularize and use.)

1. The utility model provides a structure is backfilled to foundation ditch among garden construction which characterized in that: the soil-less foundation pit is characterized by comprising a bottom layer and a surface layer, wherein the bottom layer is paved on the bottom surface of a foundation pit, the surface layer is paved on the bottom layer, the upper surface of the surface layer is flush with the ground, the surface layer is formed by paving planting soil, and the thickness of the surface layer is 10-90 cm.

2. The backfill structure for the foundation pit in the garden construction according to claim 1, wherein: the bottom layer is paved by filling materials except silt, miscellaneous soil, humus soil with the organic matter content of more than 8 percent and stones with the grain diameter of more than 20 cm.

3. The backfill structure for the foundation pit in the garden construction according to claim 1, wherein: and a clay layer is backfilled between the side wall of the bottom layer and the side wall of the foundation pit.

4. the backfill structure for the foundation pit in the garden construction according to claim 3, wherein: the thickness of the clay layer is 0.5-1.5 m.

5. a foundation pit backfill construction method in garden construction is characterized by comprising the following steps: the method comprises the following steps:

Firstly, laying a bottom layer on the bottom surface of a foundation pit;

and step two, paving the planting soil on the bottom layer, and leveling to form a surface layer with the thickness of 10-90 cm.

6. The method for backfilling a foundation pit in garden construction according to claim 5, wherein: further comprising the steps of:

Arranging a protection plate on the side wall of the foundation pit;

And a clay layer is paved between the side wall of the foundation pit and the protection plate by adopting clay.

7. The method for backfilling a foundation pit in garden construction according to claim 5, wherein: in the first step, the bottom layer is paved by filling materials except silt, miscellaneous soil, humus soil with the organic matter content of more than 8 percent and stones with the grain size of more than 20 cm.

8. the earthwork construction method in landscape construction according to claim 5, wherein: in the first step, if the thickness of the bottom layer is more than 25 cm, layered paving is adopted, and the thickness of the soil paved on each layer is 15-25 cm.

9. The method for backfill construction of a foundation pit in garden construction according to claim 8, wherein: and after each layer is tamped, a dry soil sample is taken by a cutting ring, the density of the dry soil sample is measured, and after the maximum dry density of the corresponding soil mass is reached, the soil is paved on the previous layer.

10. the earthwork construction method in landscape construction according to claim 6, wherein: when the clay layer is paved, the protection plate is lifted upwards by 15-25 cm, then the clay is filled, when the clay layer is paved to be level with the bottom surface of the protection plate, the protection plate is lifted to be paved, and the operations are repeated until the paving of the clay layer is completed.

Technical Field

The invention relates to the technical field of garden construction, in particular to a foundation pit backfill structure in garden construction and a construction method.

background

Along with the improvement of living standard, the construction of gardens is also more and more paid attention to, and the foundation ditch is backfilled as the important component in the construction process, and the construction of foundation ditch backfill also plays crucial effect to the construction of gardens. The current foundation ditch is backfilled by adopting original soil, but in practical application, the condition that various broken stones with large particle sizes are mixed with the original soil often appears, and the condition that trees are planted in the original foundation ditch often appears in garden construction, so that the foundation ditch which is backfilled and completed needs to be subjected to soil replacement operation, manpower and financial resources are wasted, and the construction efficiency is also influenced.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a foundation pit backfilling structure in garden construction and a construction method, so that the backfilled foundation pit is prevented from being subjected to soil replacement operation, and the construction efficiency is ensured.

The technical scheme adopted by the invention for solving the technical problems is as follows:

The utility model provides a structure is backfilled to foundation ditch among landscape construction, includes bottom and surface course, the bottom is laid in the bottom surface of foundation ditch, the surface course is laid on the bottom, and its upper surface flushes with ground, the surface course is laid by planting soil and is formed, the thickness of surface course is 10-90 centimetres.

Preferably, the bottom layer is paved by filling materials except silt, miscellaneous soil, humus soil with the organic matter content of more than 8 percent and stones with the grain diameter of more than 20 cm.

Preferably, a clay layer is backfilled between the side wall of the bottom layer and the side wall of the foundation pit.

Preferably, the clay layer has a thickness of 0.5 to 1.5 meters.

A foundation pit backfill construction method in garden construction comprises the following steps:

Firstly, laying a bottom layer on the bottom surface of a foundation pit;

And step two, paving the planting soil on the bottom layer, and leveling to form a surface layer with the thickness of 10-90 cm.

Preferably, the method further comprises the following steps:

Arranging a protection plate on the side wall of the foundation pit;

and a clay layer is paved between the side wall of the foundation pit and the protection plate by adopting clay.

Preferably, in the first step, the bottom layer is paved by the fillers except silt, miscellaneous soil, humus soil with the organic matter content of more than 8 percent and stones with the grain size of more than 20 cm.

Preferably, in the first step, if the thickness of the bottom layer is more than 25 cm, the bottom layer is laid in layers, and the thickness of the soil laid on each layer is 15-25 cm.

preferably, after each layer is tamped, a dry soil sample is taken by a cutting ring, the density of the dry soil sample is measured, and after the maximum dry density of the corresponding soil mass is reached, the soil is paved on the previous layer.

Preferably, the protection plate is lifted upwards by 15-25 cm when the clay layer is laid, then the clay is filled, the protection plate is lifted to be laid when the clay layer is laid to be level with the bottom surface of the protection plate, and the above operations are repeated until the clay layer is laid.

The invention has the beneficial effects that: through setting up the surface course to adopt planting soil to lay, can directly plant when needing to plant trees on the foundation ditch that finishes laying, need not trade the soil operation to the good foundation ditch of backfilling, guarantee the efficiency of construction. The invention has good use effect and is easy to popularize and use.

Drawings

Fig. 1 is a schematic flow chart of the foundation pit backfill construction method in garden construction.

Wherein, 1-bottom layer, 2-surface layer, 3-foundation pit, 4-clay layer and 5-wall body.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the backfill structure for the foundation pit in the garden construction of the embodiment includes a bottom layer 1 and a surface layer 2, wherein the bottom layer 1 is laid on the bottom surface of the foundation pit 3, the surface layer 2 is laid on the bottom layer 1, the upper surface of the surface layer is flush with the ground, the surface layer 2 is laid by planting soil, and the thickness of the surface layer 2 is 10-90 cm.

based on the foundation ditch backfill structure among the landscape construction of above-mentioned characteristic, through setting up surface course 2 to adopt planting soil to lay, can directly plant when needing to plant trees on the foundation ditch 3 that finishes laying, need not trade the soil operation to backfilling good foundation ditch 3, guarantee the efficiency of construction. The invention has good use effect and is easy to popularize and use.

In this embodiment, the bottom layer 1 is formed by paving the fillers except silt, miscellaneous soil, humus soil with an organic matter content of more than 8% and stones with a grain size of more than 20 cm. In addition, if the thickness of the bottom layer 1 is more than 25 cm, layered paving is adopted, and the thickness of the soil paved on each layer is 15-25 cm. After each layer is tamped, a cutting ring is needed to take a dry soil sample, the density of the dry soil sample is measured, and after the maximum dry density of the corresponding soil mass is reached, the soil is paved on the previous layer. The maximum dry density of the soil is shown in the following table.

In addition, if the foundation pit 3 is connected with a deep foundation pit and a shallow foundation pit, the deep foundation pit is filled and compacted firstly, and when the deep foundation pit is filled to the same elevation as the shallow foundation pit, the deep foundation pit and the shallow foundation pit are filled and compacted together; if the segmental filling and tamping is adopted, the step-shaped filling is adopted at the joint, the height-to-width ratio of the step shape is 1: 1.5-2.5, preferably 1:2, and the distance between the upper layer and the lower layer of the staggered joint is 1-1.5 m. And the foundation pit backfilling is carried out on two opposite sides or the periphery simultaneously.

In this embodiment, if the sidewall of the foundation pit 3 is a wall 5, a clay layer 4 should be backfilled between the sidewall of the bottom layer 1 and the sidewall (i.e., the wall) of the foundation pit 3, and the thickness of the clay layer 4 is 0.5-1.5 m.

The embodiment also provides a foundation pit backfill construction method in garden construction, which is characterized in that: the method comprises the following steps:

Step one, a bottom layer is laid on the bottom surface of the foundation pit 3. The bottom layer 1 is paved by filling materials except silt, miscellaneous soil, humus soil with the organic matter content of more than 8 percent and stones with the grain diameter of more than 20 cm. In addition, if the thickness of the bottom layer 1 is more than 25 cm, layered paving is adopted, and the thickness of the soil paved on each layer is 15-25 cm. And after each layer is tamped, a dry soil sample is taken by a cutting ring, the density of the dry soil sample is measured, and after the maximum dry density of the corresponding soil mass is reached, the soil is paved on the previous layer.

In addition, if the foundation pit 3 is connected with a deep foundation pit and a shallow foundation pit, the deep foundation pit is filled and compacted firstly, and when the deep foundation pit is filled to the same elevation as the shallow foundation pit, the deep foundation pit and the shallow foundation pit are filled and compacted together; if the segmental filling and tamping is adopted, the step-shaped filling is adopted at the joint, the height-to-width ratio of the step shape is 1: 1.5-2.5, preferably 1:2, and the distance between the upper layer and the lower layer of the staggered joint is 1-1.5 m. And the foundation pit is backfilled on two opposite sides or the periphery simultaneously;

and step two, paving the planting soil on the bottom layer 1, and leveling to form a surface layer 2 with the thickness of 10-90 cm.

Carrying out surface line drawing leveling on the foundation pit 3 after the surface layer 2 is filled with soil, and carrying out line leveling on the position exceeding the standard height in the line drawing leveling; and (5) filling and tamping the place lower than the standard height.

In addition, if the side wall of the foundation pit 3 is the wall 5, the method further comprises the following steps:

And a protection plate is arranged on the side wall of the foundation pit 3. This step is performed before the step one, and the protection plate is arranged in parallel with the wall 5, and the distance between the protection plate and the wall 5 is the thickness of the clay layer 4;

And paving a clay layer 4 between the side wall of the foundation pit 3 and the protection plate by adopting clay, wherein the step is carried out after the step two is finished. When the protection plate is paved, the protection plate is lifted upwards by 15-25 cm, then clay is filled, when the protection plate is paved to be level with the bottom surface of the protection plate, the protection plate is lifted to be paved, and the operations are repeated until the paving of the clay layer 4 is completed.

In addition, in the first step, if one side wall of the foundation pit 3 is the wall 5, the area between one side of the foundation pit 3, which is not the wall, and the protection plate is laid, in case that the side wall of the foundation pit 3 is the wall 5; if the two sides of the foundation pit 3 are both walls 5, the areas between the protection plates on the two sides are paved; and if the two side walls of the foundation pit 3 are not the wall bodies 5, laying the area between the two side walls of the foundation pit 3.

according to the foundation pit backfilling construction method in garden construction based on the characteristics, the planting soil is adopted to lay the surface layer 2, so that trees can be directly planted when the trees are planted on the paved foundation pit 3, soil replacement operation does not need to be carried out on the backfilled foundation pit 3, and the construction efficiency is guaranteed. The invention has good use effect and is easy to popularize and use.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.