Expansive soil slope protection structure
By using the method of layering compaction of bagged cement soil and cement soil on the expansive soil slope, combined with the setting of the ribs and protective nets, the problem of instability of the expansive soil slope under the alternating dry and wet cycles is solved, and the double improvement of slope stability and construction cost is achieved.
Patent Information
- Application Number
- CN202421245873.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The expansive soil slope will cause volume expansion and contraction under the alternating cycle of dry and wet, resulting in unstable slopes. The existing technology such as setting up a skeleton or anchor frame slope protection is difficult to effectively solve this problem in the long run, and the construction and maintenance costs are high.
The slope foot is used to lay the line as the baseline to arrange bagged cement soil for foundation machining, and backfilled the cement soil layer by layer, and ribs and protective nets are installed at intervals to enhance structural stability and protective effect through staggered seams and planted bags.
This method can effectively seal water, reduce the dry and wet cycle of expansive soil, improve the stability of the slope, and reduce construction and maintenance costs. At the same time, the material source is wide, the compressive strength is high, and the construction is simple.
Smart Images
Figure CN222557656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to an expansive soil slope protection structure. Background Art
[0002] Expansive soil has the properties of swelling when absorbing water, shrinking when losing water, and repeatedly deforming and cracking. Under the action of alternating dry and wet cycles, the expansive soil itself will undergo significant volume expansion and contraction, which will cause great harm to the stability of highway and railway slopes. In engineering, the method of slowing down the slope and setting up a skeleton or anchor frame slope protection is usually adopted. The skeleton is mainly set up for drainage. When there is heavy rainfall, it is difficult to meet the drainage requirements by relying solely on the skeleton. Most of the precipitation will penetrate into the slope along the slope surface and cause damage; setting up anchor frame beam slope protection can inhibit the development of cracks in the expansive soil slope and the deformation of the slope in the short term, but for areas with frequent dry and wet alternations, the stress state of the anchor will change with the expansion and deformation, resulting in the frame overhead and anchor force loss. Once the retaining structure fails, it needs to be renovated, which will cause a huge waste of manpower and financial resources, which is not worth the loss. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an expansive soil slope protection structure.
[0004] In order to solve the above problems, the utility model provides the following technical solutions:
[0005] An expansive soil slope protection structure is provided. The bagged cement soil is arranged for foundation laying with the slope foot as the reference line. The slope above the bagged cement soil is backfilled with cement soil layer by layer. A rib should be set every 20-30m on the slope. The rib is laid with bagged cement soil like the foundation. A protective net is set on the slope to protect the protection structure.
[0006] Further technology of the utility model:
[0007] Preferably, the bagged cement soil is laid with staggered joints.
[0008] Preferably, the gap between the rib and the slope is filled with cement soil.
[0009] Preferably, vegetation bags are stacked on the outer layer of the ribs.
[0010] The beneficial effects of the above technical solution are:
[0011] The utility model combines the advantages of cement soil and bagged soil and overcomes the shortcomings of both, and has the following advantages: wide source of materials, non-expanding silty clay can be mixed with 6% or more cement and packed into woven bags; it can have higher compressive strength after masonry is completed; the working surface is small, no large machinery is required, and the construction is simple; it can be stacked according to the terrain and topography of the slope, with high wedging degree; and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0013] Figure 1 It is a plan view of an expansive soil slope protection structure;
[0014] Figure 2 yes Figure 1 Middle AA schematic diagram;
[0015] Figure 3 yes Figure 1 Schematic diagram of the middle BB;
[0016] Among them: 10. Slope; 11. Foundation; 12. Ribs; 13. Protective net; 14. Vegetation bags; 15. Cement soil. DETAILED DESCRIPTION
[0017] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0018] like Figure 1-3 In this embodiment, an expansive soil slope protection structure is provided. The foot of the slope 10 is used as a reference line to lay out the bagged cement soil into the foundation 11. The width and height of the foundation 11 must be greater than 1.5m. The bagged cement soil is made of non-expandable silty clay mixed with 6% or more cement and packed into woven bags; the slope 10 above the bagged cement soil is backfilled with cement soil 15 layer by layer, and the cement content of the cement soil 15 is not less than 6%. The slope 10 should be provided with a rib 12 every 20-30m. The rib 12 is stacked with bagged cement soil like the foundation 11, and a protective net 13 is provided on the slope surface to protect the protection structure.
[0019] The use of bagged cement soil and cement soil for layered compaction of slope protection can play a good role in sealing water, greatly reducing the probability of dry-wet cycles of expansive soil, thereby ensuring the stability of the slope.
[0020] The filling amount of the bagged cement soil is about 80%, which should not be too full. The bagged cement soil is staggered and stacked to increase friction.
[0021] The gap between the supporting rib 12 and the side slope 10 is filled with 6% cement soil 15 .
[0022] The outer layer of the supporting rib 12 is provided with a vegetation bag 14.
[0023] Construction technology and process:
[0024] With the foot of the slope as the reference line, lay out the bagged cement soil for the foundation 11. Staggered joints and compaction are required. The cement content should not be less than 6%. The width and height of the foundation 11 should be greater than 1.5m.
[0025] The filling volume of bagged cement soil should be about 80%, not too full, and the stacking should be staggered to increase friction.
[0026] A supporting rib 12 should be set every 20-30m. The supporting rib 12 is built with bagged cement soil like the foundation 11. For positions with larger gaps, 6% cement soil 15 is used for filling. For the wider outer layer of the slope 10, vegetation bags 14 are set.
[0027] The upper part of the bagged cement soil is backfilled with 6% cement soil 15 layer by layer.
[0028] After filling is completed, the slope surface is treated with net-hanging soil spraying.
[0029] It should be noted that the cement soil 15 is mixed on site, and backfilling and compaction are completed before the cement initially sets. Small machines are used for compaction, and the compaction degree is not less than 92%.
[0030] The layer-by-layer rolling and compaction of cement soil, as well as the reasonable stacking of bagged cement soil have a huge impact on the engineering protection effect.
[0031] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.
[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An expansive soil slope protection structure, characterized in that: With the foot of the slope as the reference line, lay out the bagged cement soil for foundation laying. The slope above the bagged cement soil is backfilled with cement soil layer by layer. A rib should be set up on the slope every 20-30m. The rib is laid with bagged cement soil like the foundation, and a protective net is set on the slope to protect the protective structure.
2. An expansive soil slope protection structure according to claim 1, characterized in that: The bagged cement soil is stacked and laid with staggered joints.
3. The expansive soil slope protection structure according to claim 1, characterized in that: The gap between the rib and the slope is filled with cement soil.
4. The expansive soil slope protection structure according to claim 1, characterized in that: The outer layer of the ribs is stacked with vegetation bags.