CN110578343A - Suspension protection structure and method for high-voltage power pipeline at top of deep foundation pit - Google Patents
Suspension protection structure and method for high-voltage power pipeline at top of deep foundation pit Download PDFInfo
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- CN110578343A CN110578343A CN201910917874.6A CN201910917874A CN110578343A CN 110578343 A CN110578343 A CN 110578343A CN 201910917874 A CN201910917874 A CN 201910917874A CN 110578343 A CN110578343 A CN 110578343A
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- steel
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- suspender
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Abstract
The invention discloses a suspension protection structure and a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit, and the suspension protection structure comprises double-spliced I-shaped steel assemblies, first channel steel, second channel steel, a first round steel suspender and a second round steel suspender, wherein the double-spliced I-shaped steel assemblies are symmetrically provided with two groups, two ends of each of the two groups of double-spliced I-shaped steel assemblies are both erected on a ring beam and cross over the foundation pit, the first channel steel is arranged above the double-spliced I-shaped steel assemblies, the first round steel suspender and the second round steel suspender are respectively arranged below the first channel steel, and the second channel steel is arranged at the lower ends of the first round steel suspender and the second round steel suspender; the suspension protection structure is not limited by the elevation of the pipeline, has high adaptability, can meet in-situ suspension protection, has small influence on other existing structures in the deep foundation pit, can stably protect the pipeline, has high protection stability and strength, ensures high safety, is simple in suspension protection structure, is easy to operate in construction steps, and does not hinder the operation of the next stage in construction.
Description
Technical Field
The invention relates to the field of suspension protection structures, in particular to a suspension protection structure and method for a high-voltage power pipeline at the top of a deep foundation pit.
Background
The construction of the deep foundation pit inevitably brings great influence to the original various pipelines, inconvenience to the original planned and built pipeline layout, and the problems of pipeline moving and changing and how to protect the existing pipelines become one of the difficulties in subway construction;
The invention provides a suspension protection structure and a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit, which have the advantages that the construction process is relatively complex, the construction at the next stage can be hindered after treatment, in addition, a temporary fixing structure is adopted for protection, but the fixing measures are relatively simple, the stress stability of the pipeline is not facilitated, the potential safety hazard is large, some suspension protection structures have the problem of difficult construction due to the limitation of the elevation of the pipeline, the suspension protection structure and the suspension protection method can meet the structural stress stability requirement of the pipeline, the operation is simple and convenient, and the suspension protection structure and the suspension protection method which can not hinder the construction at the next stage have important significance, so the suspension protection structure and the suspension protection method for the high-voltage power pipeline at the top of the deep foundation pit are provided.
Disclosure of Invention
aiming at the problems, the invention provides a suspension protection structure and a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit.
The invention provides a suspension protection structure of a high-voltage power pipeline at the top of a deep foundation pit, which comprises double-spliced I-steel assemblies, a first channel steel, a second channel steel, a first round steel suspender and a second round steel suspender, wherein the double-spliced I-steel assemblies are symmetrically provided with two groups, two ends of the two groups of double-spliced I-steel assemblies are both erected on a ring beam and cross over the foundation pit, the first channel steel is arranged above the double-spliced I-steel assemblies, the first channel steel is provided with a plurality of groups of double-spliced I-steel assemblies at equal intervals, the first round steel suspender and the second round steel suspender are respectively arranged below the first channel steel, the second channel steel is arranged at the lower ends of the first round steel suspender and the second round steel suspender, the lower ends of the first round steel suspender and the second round steel suspender are connected with the second channel steel through bolts, and a bracket shaped like a Chinese character 'jing' is formed among the first channel steel, the second channel steel, the first.
the further improvement lies in that: the double-spliced I-shaped steel component consists of two same I-shaped steels.
The further improvement lies in that: the first round steel suspender and the second round steel suspender are a round steel suspender and a second round steel suspender, and the two ends of the first round steel suspender and the second round steel suspender are provided with threads.
the further improvement lies in that: the second channel steel is transversely arranged at equal intervals at the bottom of the box culvert along the direction of the concrete box culvert.
a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit comprises the following steps:
The method comprises the following steps: the pipeline condition is subjected to on-site investigation by combining a construction design drawing provided by a property right unit;
Step two: determining a line pipe protection principle and a suspension protection scheme according to a field investigation result;
Step three: carrying out building envelope construction in the deep foundation pit, and then carrying out pipeline protection construction;
step four: after the pipeline protection construction, calculating the stress load and the internal force of I-beams forming the double-spliced I-beam assembly, calculating the stress load and the internal force of a first round steel suspender and a second round steel suspender, then erecting the double-spliced I-beam assembly, and carrying out manual undermining excavation on the pipeline position in the foundation pit range after the interval of 1 m;
Step five: a first round steel suspension rod, a second round steel suspension rod, a first channel steel and a second channel steel are installed and welded to form a bracket shaped like a Chinese character 'jing';
step six: the soil around the box culvert is completely excavated to 50cm below the bottom surface of the box culvert, and a first round steel suspender, a second round steel suspender, a first channel steel and a second channel steel are welded in an encrypted manner to form a plurality of 'well' -shaped brackets;
Step seven: and constructing the crown beam and the concrete support, and excavating the deep foundation pit after the construction is finished.
The further improvement lies in that: the site investigation process in the first step mainly comprises the following steps: and (4) performing well opening and checking along the pipeline, excavating part of the section, and knowing the actual burial depth, the actual position, the original protection condition and the peripheral obstacle condition of the pipeline.
The further improvement lies in that: and in the third step, when the building enclosure structure is constructed in the deep foundation pit, the grid construction is supported, when the suspension span is large, two groups of support tractors of the lattice columns are arranged in the middle, and the lattice columns are arranged on two side surfaces of the suspension truss.
The further improvement lies in that: the pipeline is required to be monitored and patrolled in the construction process of the suspension protection structure, settlement observation points are arranged on box culvert protection of the pipeline, deformation conditions of a protected object are timely known through settlement changes of the observation points, each node part of the steel truss is required to be patrolled and observed every day, whether a welding seam of each node part has a welding fracture phenomenon or not is mainly checked, and if damaged parts are found, reinforcement processing is timely carried out.
the invention has the beneficial effects that: the suspension protection structure is not limited by the elevation of the pipeline, has high adaptability, can meet in-situ suspension protection, has small influence on other existing structures in a deep foundation pit, can stably protect the pipeline by forming the bracket in a shape like a Chinese character jing between the double-spliced I-shaped steel component and the channel steel, the second channel steel, the first round steel suspender and the second round steel suspender, has high protection stability and strength, ensures high safety, is simple in suspension protection structure, is easy to operate in construction steps, and does not hinder the operation of the next stage in construction.
Drawings
FIG. 1 is a front view of the present invention.
Wherein: 1. double-spliced I-steel components; 2. a first channel steel; 3. a second channel steel; 4. a first round steel boom; 5. a second round steel boom; 6. and (4) a ring beam.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to the drawing 1, this embodiment provides a deep basal pit top high voltage electric power pipeline's protection architecture that suspends in midair, including double pin I-steel subassembly 1, first channel-section steel 2, second channel-section steel 3, first round steel jib 4 and second round steel jib 5, double pin I-steel subassembly 1 symmetry is equipped with two sets ofly, two sets of double pin I-steel subassembly 1's both ends are all erected on collar tie beam 6 and span the foundation ditch top, double pin I-steel subassembly 1 top is equipped with first channel-section steel 2, first channel-section steel 2 is equidistant to be equipped with the multiunit, first channel-section steel 2 below is equipped with first round steel jib 4 and second round steel jib 5 respectively, first round steel jib 4 and second round steel jib 5 lower extreme are equipped with second channel-section steel 3, first round steel jib 4 and second round steel jib 5 lower extreme pass through the bolt and are connected with second channel-section steel 3, first channel-section steel 2, second channel-section steel 3, A bracket shaped like a Chinese character 'jing' is formed between the first round steel suspender 4 and the second round steel suspender 5.
The double-spliced I-shaped steel component 1 is composed of two same I-shaped steels.
The first round steel suspender 4 and the second round steel suspender 5 are a round steel suspender 4 and a second round steel suspender 5 which are threaded at two ends.
And the second channel steel 3 is transversely arranged at equal intervals at the bottom of the box culvert along the direction of the concrete box culvert.
a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit comprises the following steps:
the method comprises the following steps: the construction design drawing that combines property right unit to provide has carried out on-the-spot investigation to the pipeline condition, mainly includes: the method comprises the following steps of (1) carrying out well opening and checking along a pipeline, excavating partial section roads, and knowing the actual burial depth, the actual position, the original protection condition and the condition of obstacles around the pipeline;
Step two: determining a line pipe protection principle and a suspension protection scheme according to a field investigation result;
step three: carrying out building envelope construction in the deep foundation pit, wherein the building envelope construction comprises supporting construction for lattice construction, when the suspension span is large, two groups of support tractors of lattice columns are arranged in the middle, the lattice columns are arranged on two side surfaces of the suspension truss, and then pipeline protection construction is carried out;
Step four: after the pipeline protection construction, calculating the stress load and the internal force of the I-beams forming the double-spliced I-beam assembly 1, calculating the stress load and the internal force of the first round steel suspender 4 and the second round steel suspender 5, then erecting the double-spliced I-beam assembly 1, and carrying out manual cut excavation on the pipeline position in the foundation pit range after the interval of 1 m;
Step five: a first round steel suspender 4, a second round steel suspender 5, a first channel steel 2 and a second channel steel 3 are installed and welded to form a bracket shaped like a Chinese character 'jing';
Step six: the soil around the box culvert is completely excavated to 50cm below the bottom surface of the box culvert, and a first round steel suspender 4, a second round steel suspender 5, a first channel steel 2 and a second channel steel 3 are welded in an encrypted manner to form a plurality of 'well' -shaped brackets;
Step seven: constructing the crown beam and the concrete support, and excavating a deep foundation pit after the construction is finished;
the pipeline is required to be monitored and patrolled in the construction process, settlement observation points are arranged on box culvert protection of the pipeline, deformation conditions of a protected object are known in time through settlement changes of the observation points, each node part of the steel truss is required to be patrolled and observed every day, whether welding seams of each node part are broken or not is mainly checked, and if damaged parts are found, reinforcement treatment is timely carried out on the damaged parts
the suspension protection structure is not limited by the elevation of the pipeline, has high adaptability, can meet in-situ suspension protection, has small influence on other existing structures in a deep foundation pit, can stably protect the pipeline by forming the bracket in a shape like a Chinese character 'jing' between the double-spliced I-shaped steel component 1, the channel steel 2, the second channel steel 3, the first round steel suspender 4 and the second round steel suspender 5, and has high protection stability and strength, high safety guarantee, simple suspension protection structure, easy operation of construction steps and no influence on the operation of the next stage in construction.
the foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. the utility model provides a deep basal pit top high voltage electricity pipeline's protection architecture that suspends in midair which characterized in that: including double pin I-steel subassembly (1), first channel-section steel (2), second channel-section steel (3), first round steel jib (4) and second round steel jib (5), double pin I-steel subassembly (1) symmetry is equipped with two sets ofly, and is two sets of double pin I-steel subassembly (1) both ends are all erected on gird beam (6) and span the foundation ditch top, double pin I-steel subassembly (1) top is equipped with first channel-section steel (2), equidistant the multiunit that is equipped with in first channel-section steel (2), first channel-section steel (2) below is equipped with first round steel jib (4) and second round steel jib (5) respectively, first round steel jib (4) and second round steel jib (5) lower extreme are equipped with second channel-section steel (3), first channel-section steel (2) and second round steel jib (5) lower extreme are connected with second channel-section steel (3) through the bolt, first channel-section steel (2), A bracket shaped like a Chinese character 'jing' is formed among the second channel steel (3), the first round steel suspender (4) and the second round steel suspender (5).
2. The suspension protection structure of the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 1, wherein: the double-spliced I-shaped steel component (1) is composed of two same I-shaped steels.
3. the suspension protection structure of the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 1, wherein: the first round steel suspender (4) and the second round steel suspender (5) are a round steel suspender (4) and a second round steel suspender (5) which are threaded at two ends.
4. The suspension protection structure of the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 1, wherein: the second channel steel (3) is transversely arranged at equal intervals at the bottom of the box culvert along the direction of the concrete box culvert.
5. a suspension protection method for a high-voltage power pipeline at the top of a deep foundation pit is characterized by comprising the following steps:
The method comprises the following steps: the pipeline condition is subjected to on-site investigation by combining a construction design drawing provided by a property right unit;
Step two: determining a line pipe protection principle and a suspension protection scheme according to a field investigation result;
step three: carrying out building envelope construction in the deep foundation pit, and then carrying out pipeline protection construction;
Step four: after pipeline protection construction, calculating the stress load and the internal force of I-beams forming the double-spliced I-beam assembly (1), calculating the stress load and the internal force of a first round steel suspender (4) and a second round steel suspender (5), then erecting the double-spliced I-beam assembly (1), and carrying out manual cut excavation on pipeline positions in a foundation pit range at intervals of 1 m;
step five: a first round steel suspension rod (4), a second round steel suspension rod (5), a first channel steel (2) and a second channel steel (3) are installed and welded to form a bracket shaped like a Chinese character 'jing';
Step six: soil around the box culvert is completely excavated to 50cm below the bottom surface of the box culvert, and a first round steel suspender (4), a second round steel suspender (5), a first channel steel (2) and a second channel steel (3) are welded in an encrypted manner to form a plurality of 'well' -shaped brackets;
Step seven: and constructing the crown beam and the concrete support, and excavating the deep foundation pit after the construction is finished.
6. the suspension protection method for the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 5, wherein the suspension protection method comprises the following steps: the site investigation process in the first step mainly comprises the following steps: and (4) performing well opening and checking along the pipeline, excavating part of the section, and knowing the actual burial depth, the actual position, the original protection condition and the peripheral obstacle condition of the pipeline.
7. The suspension protection method for the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 5, wherein the suspension protection method comprises the following steps: and in the third step, when the building enclosure structure is constructed in the deep foundation pit, the grid construction is supported, when the suspension span is large, two groups of support tractors of the lattice columns are arranged in the middle, and the lattice columns are arranged on two side surfaces of the suspension truss.
8. the suspension protection method for the high-voltage power pipeline at the top of the deep foundation pit as claimed in claim 5, wherein the suspension protection method comprises the following steps: the pipeline is required to be monitored and patrolled in the construction process of the suspension protection structure, settlement observation points are arranged on box culvert protection of the pipeline, deformation conditions of a protected object are timely known through settlement changes of the observation points, each node part of the steel truss is required to be patrolled and observed every day, whether a welding seam of each node part has a welding fracture phenomenon or not is mainly checked, and if damaged parts are found, reinforcement processing is timely carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910917874.6A CN110578343A (en) | 2019-09-26 | 2019-09-26 | Suspension protection structure and method for high-voltage power pipeline at top of deep foundation pit |
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| CN201910917874.6A CN110578343A (en) | 2019-09-26 | 2019-09-26 | Suspension protection structure and method for high-voltage power pipeline at top of deep foundation pit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576446A (en) * | 2020-06-10 | 2020-08-25 | 中铁四局集团有限公司 | In-situ protection device for pressure pipeline in underground foundation pit and construction method |
| CN111795212A (en) * | 2020-06-13 | 2020-10-20 | 宁波越兴建设工程有限公司 | Suspension method and suspension structure for pipeline crossing foundation pit |
| CN112376547A (en) * | 2020-12-08 | 2021-02-19 | 中国二十冶集团有限公司 | Construction method for passing cable trench under pipeline |
| CN112962670A (en) * | 2021-02-19 | 2021-06-15 | 济南轨道交通集团有限公司 | Underground pipe gallery in-situ protection method |
| CN113073683A (en) * | 2021-04-07 | 2021-07-06 | 陕西华山路桥集团有限公司 | Temporary suspension device for existing pipeline and construction method |
| CN115370171A (en) * | 2022-07-29 | 2022-11-22 | 天津天源国电电力技术有限公司 | Construction method for in-situ suspension protection of power pipeline |
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| CN109340464A (en) * | 2018-10-29 | 2019-02-15 | 上海市政工程设计研究总院（集团）有限公司 | One kind hanging protective device for status underground utilities |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576446A (en) * | 2020-06-10 | 2020-08-25 | 中铁四局集团有限公司 | In-situ protection device for pressure pipeline in underground foundation pit and construction method |
| CN111795212A (en) * | 2020-06-13 | 2020-10-20 | 宁波越兴建设工程有限公司 | Suspension method and suspension structure for pipeline crossing foundation pit |
| CN111795212B (en) * | 2020-06-13 | 2022-03-08 | 宁波越兴建设工程有限公司 | Suspension method and suspension structure for pipeline crossing foundation pit |
| CN112376547A (en) * | 2020-12-08 | 2021-02-19 | 中国二十冶集团有限公司 | Construction method for passing cable trench under pipeline |
| CN112962670A (en) * | 2021-02-19 | 2021-06-15 | 济南轨道交通集团有限公司 | Underground pipe gallery in-situ protection method |
| CN113073683A (en) * | 2021-04-07 | 2021-07-06 | 陕西华山路桥集团有限公司 | Temporary suspension device for existing pipeline and construction method |
| CN115370171A (en) * | 2022-07-29 | 2022-11-22 | 天津天源国电电力技术有限公司 | Construction method for in-situ suspension protection of power pipeline |
| CN115370171B (en) * | 2022-07-29 | 2023-06-30 | 天津天源国电电力技术有限公司 | Construction method for in-situ suspension protection of electric power pipeline |
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Application publication date: 20191217 |