CN215715515U - Municipal pipe network construction supporting integrated structure under unfavorable geological conditions - Google Patents
Municipal pipe network construction supporting integrated structure under unfavorable geological conditions Download PDFInfo
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- CN215715515U CN215715515U CN202120028712.XU CN202120028712U CN215715515U CN 215715515 U CN215715515 U CN 215715515U CN 202120028712 U CN202120028712 U CN 202120028712U CN 215715515 U CN215715515 U CN 215715515U
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- 238000010276 construction Methods 0.000 title claims abstract description 32
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- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
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- 208000035126 Facies Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 230000002787 reinforcement Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
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- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000035699 permeability Effects 0.000 description 1
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Abstract
The utility model discloses a municipal pipe network construction and support integrated structure under unfavorable geological conditions, which comprises a groove formed by excavating at a bad foundation, wherein a plurality of groove soft foundation piles are embedded at the bottom of the groove at intervals along the extension direction of the groove, and lateral support piles embedded into the bottom of the groove are distributed on the left side and the right side of the groove soft foundation piles and tightly attached to the outer wall of the groove; the lateral support piles on each side are fixedly connected in the longitudinal direction through the protection plates, the lateral support piles on the two sides are fixedly connected in the transverse direction through the support members, and the lateral support piles, the protection plates and the support members are matched to form an excavation slope support structure. The method has a good effect on promoting the municipal pipeline engineering process, has an integrated construction structure, solves the problems commonly encountered in municipal pipeline excavation such as soft foundation treatment, safe civilized construction, support engineering and the like, reduces partial controversial denim and promotes the rapid development of engineering.
Description
Technical Field
The utility model relates to the field of urban municipal pipe network foundation construction reinforcement, in particular to a municipal pipe network construction and support integrated structure under unfavorable geological conditions.
Background
The municipal pipeline is used as a life pulse of a city, has a great importance in city development, and is used as a necessary facility for daily life of urban residents, and the quality of the municipal pipeline directly influences the city development and the life quality of the residents. Because the position groundwater that part municipal administration pipeline is located is abundant, and the underground soil matter is mainly silt or mucky soil more, easily takes place the incident in the pipeline installation process, and the pipeline that has installed simultaneously is easily influenced by outside unfavorable geological conditions, takes place the condition such as pipeline deformation, displacement to influence pipeline quality, produce the condition such as pipeline destruction. Although the traditional steel sheet pile supporting process can also play a corresponding supporting role, the low-frequency vibration inevitably caused in the construction process makes the traditional steel sheet pile supporting process not suitable for being adopted in urban dense areas. The utility model adopts a static pressure mode for construction, saves construction site and does not cause vibration damage to surrounding buildings. The method aims to prevent the situations of pipeline damage, quality reduction and the like caused by the influence of unfavorable geology and external factors and simultaneously increase the operability of the urban dense building area. The pipeline can be supported and strutted as necessary, the rigidity of the pipeline is strengthened, and the quality of the pipeline is ensured.
If the soil of the urban pipeline foundation is unfavorable geological conditions such as silt or mucky soil, displacement, deformation, water leakage and even damage and the like are easily caused by the influence of external factors when the urban pipeline is installed and operated in the later period. The main factors of displacement, deformation, leakage and the like caused by installation and later operation are as follows:
(1) the foundation of underground pipelines in coastal cities (rivers) is mostly marine environment sedimentary facies and continental environment sedimentary facies, and geological layers are mostly unfavorable geological soil layers such as silt or mucky soil. The silt or the mucky soil has poor permeability, high compressibility, low shear strength and strong thixotropy, and is easy to generate thixotropy or liquefaction when being disturbed by the outside, thereby causing damages such as pipeline displacement, deformation, water leakage and the like.
(2) In the construction process, uneven vertical stress is generated due to construction machinery and other factors, so that soil around the groove is disturbed and deformed, and the pipeline is displaced and deformed in the groove.
(3) The foundation soil at the bottom of the pipeline and on the two sides of the pipeline is mucky soil, after the backfilling of the pipe groove is completed, a component used for supporting needs to be pulled out, the side earthwork of the groove can be inevitably taken away when the supporting component is pulled out, so that the side direction of the groove is hollow, and the pipeline is easy to displace, deform, leak and the like when the pipe groove is naturally settled in the later period.
(4) The pipeline may be subjected to loads from transportation vehicles, superstructure and other superstructure during later operation, which may result in damage to the pipeline such as displacement, deformation and leakage.
(5) With the high-speed development of cities, construction contents such as earth excavation and the like are inevitably involved in the subsequent city infrastructure, which may disturb the original pipeline and may cause damages such as pipeline displacement, deformation, leakage and the like.
Above-mentioned factor all probably causes phenomenons such as pipeline displacement, deformation, seepage, because of municipal administration pipeline has the status of lifting at great importance in urban development, the municipal pipe network quality problems appears will influence urban operation, and then influences resident's life, causes great economic loss. Therefore, for pipeline construction under unfavorable geological conditions, reliable supporting and groove supporting structures are reasonably arranged before the pipeline is installed, and the pipeline quality is guaranteed.
Based on the situation, the utility model provides the municipal pipe network construction and support integrated structure under the unfavorable geological condition, and the problems can be effectively solved.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: to the problem that above-mentioned exists, combine coastal (river) urban pipeline basic geology condition and pipeline erection construction scheme, to the pipeline basis under unfavorable geological conditions, guarantee the pipeline erection quality, simplify municipal pipeline construction flow for municipal pipeline construction progress, extension municipal pipeline life cycle reduces municipal pipeline later stage cost and drops into, provides a safe supporting construction.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model provides a municipal pipe network construction and support integrated structure under unfavorable geological conditions, which comprises a groove formed by excavating at a bad foundation, wherein a plurality of groove soft foundation piles are embedded at the bottom of the groove at intervals along the extension direction of the groove, and lateral support piles embedded into the bottom of the groove are distributed on the left side and the right side of the groove soft foundation piles and tightly attached to the outer wall of the groove; the lateral support piles on each side are fixedly connected in the longitudinal direction through the protection plates, the lateral support piles on the two sides are fixedly connected in the transverse direction through the support members, and the lateral support piles, the protection plates and the support members are matched to form an excavation slope support structure.
According to a preferable scheme of the utility model, each groove soft foundation pile is exposed out of the bottom of the groove for a certain length, and the gravel layer is laid on the bottom of the groove and the periphery of the groove soft foundation pile, and the groove soft foundation pile, the lateral support pile and the gravel layer are matched to form a bad foundation support structure.
In a preferable scheme of the utility model, the gravel layer is laid to be flush with the top of the soft foundation pile of the groove.
In a preferable scheme of the utility model, the soft foundation piles and the lateral support piles in the grooves are driven into the grooves by adopting walking type pile driving equipment.
The utility model also comprises backfill materials positioned in the groove, wherein each layer has backfill thickness not greater than 20cm and is paved on the whole groove.
As a preferable scheme of the utility model, the top elevation of the lateral support pile is higher than that of the groove soft foundation pile, and a space for installing a pipeline is defined among the lateral support pile, the groove soft foundation pile and the supporting member.
In a preferable scheme of the utility model, the gravel layer is backfilled to a thickness of not less than 30cm and is paved on the bottom of the whole groove.
As a preferable scheme of the utility model, the length of the lateral support pile is greater than that of the groove soft foundation pile.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
(1) the utility model creatively integrates the soft foundation support and the lateral support of the municipal pipeline, further enhances the rigidity and the integrity of the groove support, strengthens the overall quality of the municipal pipeline, improves the service cycle of the municipal pipeline and further plays a role in reducing the later-stage cost investment of the municipal pipeline on the premise of simplifying the working procedures.
(2) The utility model uses permanent trench bottom and side support, which can avoid secondary settlement and disturbance caused by removing support after municipal pipeline is backfilled. In the later stage equipment operation process, permanent support also can continuously protect municipal pipe network, avoids damage such as pipeline displacement, deformation and leaking that lead to because of other external forces.
Drawings
FIG. 1 is a plan view of the piling site of the present invention;
FIG. 2 is a cross-sectional view of the support integration and pipe installation of the present invention;
FIG. 3 is a plan view of the support integration and pipe installation of the present invention;
fig. 4 is a cross-sectional view of the present invention after trench backfill is completed.
Reference numerals: 1. a walking pile driving device; 2. a groove soft foundation pile; 3. laterally supporting piles; 4. a protection plate; 5. a support member; 6. a pipe; 7. backfilling; 8. a trench; 9. and (4) a crushed stone layer.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The present invention will be further described with reference to the following examples and figures 1-4, but the utility model is not limited thereto.
As shown in fig. 1 to 4, the present embodiment provides an integrated structure of foundation treatment and slope support under unfavorable geological conditions, including a trench (trench excavation depth is H) excavated at a bad foundation, and a bad foundation support structure and an excavated slope support structure are provided in the trench; wherein, the groove soft foundation pile 2, the lateral support pile 3 and the rubble layer 9 are matched to form a bad foundation support structure; the side supporting piles 3, the protection plates 4 and the supporting members 5 are matched with one another to form an excavation slope supporting structure.
The groove soft foundation piles 2 and the lateral support piles 3 can adopt pine piles, concrete imitation pine piles, iron support piles and the like, the groove soft foundation piles 2 (with the length of L2) are driven into unfavorable geology to improve the foundation bearing capacity of the foundation, the uneven settlement of the foundation is avoided, and the pipeline laying quality caused by different soil layer geology is overcome; the lateral support piles 3 (with the length of L1, L1 is larger than L2) are tightly attached to the outer wall of the groove and are driven into unfavorable geology to a certain depth, on one hand, the improvement effect of the groove soft foundation pile 2 is enhanced, on the other hand, lateral supporting force is provided for the groove, the anti-sliding stability of the groove is improved, the damage such as groove slope collapse and settlement is prevented, and the driving depth of the two piles is determined according to geological exploration data and the actual situation of the site.
The protection plate 4 and the support member 5 are correspondingly adjusted to be made of the same material according to the material used by the lateral support piles 3, original linear reinforcement is performed to form protection of the whole groove side slope surface through combination of the lateral support piles 3, the support effect of the lateral support piles is enhanced, and the lateral support piles can be directly dismantled and recycled after the pipe 6 is installed.
Based on the structure, the construction method adopting the soft foundation treatment and support integrated structure comprises the following steps (taking pine piles as materials):
A. cutting and crushing an original pavement road through engineering machinery to form a basic operation surface;
B. excavating a working face with the depth of 500mm, and preliminarily judging that the geological condition of the working face conforms to the surveying condition or has the necessity of poor geological treatment;
C. driving the lateral support piles 3 along two sides of the working face by using the walking type pile driving equipment 1 at an interval of 1100m, adjusting the driving depth according to geological survey data and site conditions, enabling the lateral support piles to enter a supporting layer by 1.5 times of the diameter D of the lateral support piles 3, cutting off redundant parts after the lateral support piles 3 are constructed, and adjusting the distance h between the cut lateral support piles 3 and the top of a pipe groove according to a groove backfill recovery measure;
D. fastening pieces (iron nail materials such as large-size shooting nails and grabbing nails) are adopted to fix the protection plates 4 (wood templates) on the lateral support piles 3, so that the side slope support effect is achieved;
E. driving the groove soft foundation pile 2 into the middle of an excavated pipe casing through the walking type pile driving equipment 1, arranging the groove soft foundation pile 2 into a triangle as shown in a figure 3 at an interval of 600mm, driving the groove soft foundation pile into a holding layer according to geological survey data or actual conditions on site or until the groove soft foundation pile can not advance any more, cutting off redundant parts through tools such as an electric saw and the like, exposing the cut groove soft foundation pile 2 to the bottom of the pipe casing for 100mm, and laying a gravel layer 9 to be flush with the top of the groove soft foundation pile 2;
F. setting a proper supporting interval according to the type of the pipeline to be installed, fixing the supporting member 5 by using a fastener (iron nail-button material, such as large-size shooting nails and grabbing nails), and performing a re-reinforcing effect on the lateral side supporting pile 3 by using the part;
G. the backfill material 7 is installed according to the engineering type, and the relevant engineering requirements are met;
H. after the pipeline installation program is qualified, the component protection plate 4 and the supporting component 5 are dismantled, and stacking and storage measures are adopted to ensure that the components are repeatedly used and recycled;
I. backfilling the pipe groove by using backfill materials 7 meeting the engineering requirements until the tops of the lateral support piles 3 are flush; recovering the height difference h part between the lateral support piles 3 and the top of the groove 8 according to the engineering requirements;
J. and (5) hardening the surface layer of the municipal pipeline according to the requirements of relevant design drawings.
The method has a good effect on promoting the municipal pipeline engineering process, has an integrated construction structure, solves the problems commonly encountered in municipal pipeline excavation such as soft foundation treatment, safe civilized construction, support engineering and the like, reduces partial controversial denim and promotes the rapid development of engineering.
According to the description and the drawings of the utility model, a person skilled in the art can easily manufacture or use the municipal pipe network construction and support integrated structure under the unfavorable geological condition, and can generate the positive effects recorded by the utility model.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (8)
1. The utility model provides a municipal pipe network construction support integral structure under unfavorable geological conditions which characterized in that: the method comprises the steps that grooves are formed in poor foundation excavation, a plurality of groove soft foundation piles are embedded in the bottoms of the grooves at intervals along the extending direction of the grooves, and lateral support piles embedded in the bottoms of the grooves are distributed on the left side and the right side of the groove soft foundation piles and are tightly attached to the outer walls of the grooves; the lateral support piles on each side are fixedly connected in the longitudinal direction through the protection plates, the lateral support piles on the two sides are fixedly connected in the transverse direction through the support members, and the lateral support piles, the protection plates and the support members are matched to form an excavation slope support structure.
2. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 1, wherein: each soft foundation pile of slot all exposes certain length in slot bottom to lay the metalling in slot bottom and the soft foundation pile periphery of slot, the soft foundation pile of slot, side direction fender pile and metalling cooperate and form bad foundation bearing structure.
3. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 2, wherein: and the gravel layer is laid to be flush with the top of the groove soft foundation pile.
4. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 1, wherein: and the soft foundation piles and the lateral support piles in the grooves are driven into the grooves by adopting walking type piling equipment.
5. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 1, wherein: the backfill material is positioned in the groove, each layer has the backfill thickness of not more than 20cm, and the backfill material is paved on the whole groove.
6. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 1, wherein: the top elevation of the lateral support pile is higher than that of the groove soft foundation pile, and a space for installing a pipeline is defined among the lateral support pile, the groove soft foundation pile and the supporting member.
7. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 2, wherein: the backfill thickness of the crushed stone layer is not less than 30cm, and the crushed stone layer is paved on the bottom of the whole groove.
8. The integrated municipal pipe network construction and support structure under the unfavorable geological condition according to claim 1, wherein: the length of the lateral supporting pile is larger than that of the groove soft foundation pile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120028712.XU CN215715515U (en) | 2021-01-05 | 2021-01-05 | Municipal pipe network construction supporting integrated structure under unfavorable geological conditions |
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| CN202120028712.XU CN215715515U (en) | 2021-01-05 | 2021-01-05 | Municipal pipe network construction supporting integrated structure under unfavorable geological conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718116A (en) * | 2021-01-05 | 2022-07-08 | 中国电建集团华东勘测设计研究院有限公司 | Municipal pipe network construction and support integrated structure under unfavorable geological conditions and construction method |
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- 2021-01-05 CN CN202120028712.XU patent/CN215715515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718116A (en) * | 2021-01-05 | 2022-07-08 | 中国电建集团华东勘测设计研究院有限公司 | Municipal pipe network construction and support integrated structure under unfavorable geological conditions and construction method |
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