CN111894034A - Construction method of subway vehicle section pipe gallery - Google Patents
Construction method of subway vehicle section pipe gallery Download PDFInfo
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- CN111894034A CN111894034A CN202010679430.6A CN202010679430A CN111894034A CN 111894034 A CN111894034 A CN 111894034A CN 202010679430 A CN202010679430 A CN 202010679430A CN 111894034 A CN111894034 A CN 111894034A
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- pipe gallery
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a construction method of a subway vehicle section pipe gallery, which comprises the steps of dividing a pipe gallery to be constructed into a plurality of sections of pipe gallery sections which are sequentially connected, respectively constructing each section of pipe gallery section, excavating a foundation pit in the construction of each pipe gallery section, constructing a bottom plate of a reinforced concrete structure, side walls of reinforced concrete structures on two sides and a top plate of the reinforced concrete structure in the foundation pit, obtaining a pipe culvert structure of the pipe gallery section, and finally backfilling the foundation pit. The construction method has the advantages of high construction efficiency, high safety, capability of greatly reducing the influence on the construction of the main body structure of the upper cover vehicle section and transportation, and the like.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to a construction method of a subway vehicle section pipe gallery.
Background
With the rapid construction and the use of urban infrastructure, limited land resources are continuously reduced, the construction and development investment cost is continuously increased, the land resources are required to be efficiently utilized, the land cost is reduced, the land needs to be arranged underground and in the air urgently, the utilization efficiency of the land resources is improved, and the development and utilization of the upper cover in the planning and construction of large-scale subway vehicle section comprehensive bases with the area of hundreds of mu are one of the requirements.
The inner and outer pipe channels of the large-scale upper cover subway vehicle section comprehensive base station are important accessory facilities necessary for water supply and drainage of vehicle section electric power communication, and the rapid and orderly completion of the pipe channels is one of key factors for the vehicle section comprehensive base station to be put into use as required. The large-scale subway vehicle section is spread all over each regional each function house of vehicle section, and is large in quantity, vertically and horizontally staggered, and the kind is many, most and main part engineering cross operation during pipe network construction, and it is very big to the transportation of main part engineering and the construction influence, and vehicle section main part engineering volume is big, and the wide industry of construction face is some multimachine many materials, and the place is narrow, and the transportation difficulty, and time and place for the pipe network construction are very nervous, and the main part construction also is great to the progress and the quality influence of pipe network construction, and both restrict each other. Therefore, the planned quality guarantee can efficiently and quickly finish the pipe trench construction of the comprehensive base of the large-scale upper cover subway vehicle section, which is one of the difficulties in the construction of the large-scale upper cover subway vehicle section.
The traditional pipe trench construction method mainly has the following defects in the construction process: the construction is to excavate the foundation ditch once, and the sequence operation again, has the intercrossing operation, and the shortcoming that the work efficiency is low, the safety risk is high, and is big to the major structure construction interference of large-scale upper cover subway vehicle section simultaneously, and is big to the vehicle influence at transportation key intersection, and can't the construction quality relatively poor.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a construction method of a subway vehicle section pipe gallery, which has high construction efficiency and high safety and can greatly reduce the influence on the construction of an upper cover vehicle section main body structure and transportation.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a construction method of subway vehicle section pipe gallery, this construction method is treating the construction pipe gallery earlier and falls into the multistage pipe gallery section that meets in proper order, carries out the construction respectively to every section pipe gallery section, and the construction method of each pipe gallery section includes following step:
(S1) excavating a foundation pit;
(S2) sequentially constructing a bottom plate of a reinforced concrete structure, side walls of the reinforced concrete structures on two sides and a top plate of the reinforced concrete structure in the excavated foundation pit, wherein the bottom plate, the top plate and the side walls on two sides form a pipe culvert structure of the pipe gallery section;
(S3) backfilling soil in the foundation pit.
In the above construction method, preferably, in the step (S1), when the foundation pit is excavated, the excavation machine is first used to excavate the foundation pit to a depth position that is at least 30cm higher than the preset depth of the foundation pit, and then the foundation pit is manually excavated to the preset depth of the foundation pit.
In the above construction method, preferably, in the step (S2), the side walls on both sides are divided into an upper wall structure and a lower wall structure, the lower wall structure is formed by casting when each side wall is constructed, and the upper wall structure is cast after the lower wall structure is watered, cured and formed.
In the construction method, preferably, a first water stop is arranged at the joint of the lower wall structure and the upper wall structure, and two side edges of the first water stop are respectively embedded in the lower wall structure and the upper wall structure.
According to the construction method, preferably, the second water stop belt is arranged at the joint of the two adjacent pipe gallery sections and covers the outer parts of the two adjacent pipe gallery sections and seals the joint gap of the two adjacent pipe gallery sections.
In the construction method, preferably, when the pipe gallery section passing through the intersection is constructed, the steel trestle is erected on the excavated foundation pit.
Compared with the prior art, the invention has the advantages that:
according to the construction method of the subway vehicle section pipe gallery, the pipe gallery to be constructed is divided into the multiple sections of pipe gallery sections which are connected in sequence, each section of pipe gallery is constructed respectively, overall planning can be performed according to factors such as actual construction time, personnel and equipment configuration, fields and traffic, the construction time and sequence of each pipe gallery section are planned reasonably, mutual interference influence can be reduced and avoided to the maximum extent, smooth traffic transportation of construction of the main body structure of the super-large-size upper cover vehicle section is guaranteed, construction efficiency is improved, and the problem of potential safety hazard existing in cross construction with the main body structure of the upper cover vehicle section is solved.
Drawings
Fig. 1 is a flow chart of a construction method of a subway vehicle section pipe gallery.
Fig. 2 is a partial sectional structural view of a side wall.
Fig. 3 is a partial sectional structural schematic view of the joint of two adjacent pipe gallery sections.
Illustration of the drawings:
1. a lower wall structure; 2. an upper wall structure; 3. a first water stop; 4. a cement mortar layer; 5. a polyethylene foam sheet; 6. and a second water stop.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in figure 1, the construction method of the subway vehicle section pipe gallery divides a pipe gallery to be constructed into a plurality of sections of pipe gallery sections which are connected in sequence, and constructs each section of pipe gallery section respectively, and the construction method of each pipe gallery section comprises the following steps:
(S1) excavating a foundation pit;
(S2) sequentially constructing a bottom plate of a reinforced concrete structure, side walls of the reinforced concrete structures on two sides and a top plate of the reinforced concrete structure in the excavated foundation pit, wherein the bottom plate, the top plate and the side walls on two sides form a pipe culvert structure of the pipe gallery section;
(S3) backfilling soil in the foundation pit.
This construction method of railcar section piping lane will wait to be under construction the piping lane and fall into the multistage piping lane section that meets in proper order, be under construction respectively to every section piping lane section, can be according to the time of actual construction, personnel and equipment configuration, the place, factors such as traffic carry out the overall planning, the engineering time and the order of each piping lane section of rational planning, the piping lane section more than one section of simultaneous construction, can furthest reduce and avoid the mutual interference influence, it is smooth and easy to guarantee the transportation of super large volume upper cover vehicle section major structure construction, construction efficiency is improved, and avoid having the problem of potential safety hazard with upper cover vehicle section major structure cross construction.
That is, after the construction method divides the pipe gallery to be constructed into the multiple sections of pipe gallery sections which are connected in sequence, the pipe gallery sections can be constructed in an organization mode of overall planning, interval section jumping and cross and order, so that the effect is achieved.
Preferably, in the step (S1), when the foundation pit is excavated, the excavation machine is first used to excavate the foundation pit to a depth position that is at least 30cm higher than the preset depth of the foundation pit, and then the excavation machine is manually used to excavate the foundation pit to the preset depth of the foundation pit, so that the foundation of the foundation pit is not disturbed.
The foundation pit excavation adopts excavator excavation, dump truck transportation and manual cooperation construction. According to the construction lofting position, excavating from one end to the other end from top to bottom in a layered mode, wherein the excavating depth of each layer is about 1.5 meters, and the foundation pit side slope is 1: 1, slope releasing according to the ratio of 1:0.5 or vertical slope releasing when the local slope releasing ratio is insufficient, and partial vertical slope releasing is supported by net hanging and guniting. And controlling the elevation of the substrate according to the excavation depth of the technical intersecting bottom, stopping mechanical excavation when the foundation pit is excavated to be 30cm away from the substrate, and changing the mechanical excavation into manual excavation so as to ensure that the substrate is not disturbed. The bottom of the foundation pit is 0.4m wider than each side of the bottom of the pipe culvert. The foundation should be manually leveled and slag removed, and tamping treatment is adopted according to the bearing capacity condition of the foundation. And after the foundation pit is excavated, detecting the bearing capacity of the foundation, wherein the bearing capacity of the foundation is not less than 150Kpa, and if the bearing capacity does not meet the design requirement, performing base treatment by adopting impact rolling until the bearing capacity is qualified.
Preferably, in the step (S2), the bottom plate, the top plate and the side walls at both sides are constructed by using mechanical matching, light form, subsection construction and rapid prototyping methods. The construction efficiency is improved, the labor intensity of workers is reduced, and the construction safety is improved.
Preferably, in the step (S2), the side walls on both sides are divided into an upper layer wall structure and a lower layer wall structure, when each side wall is constructed, the lower layer wall structure 1 is poured first, and after the lower layer wall structure 1 is watered, cured and formed, the upper layer wall structure 2 is poured, so that the parts can be formed quickly for flow process and the forming quality can be improved.
In this embodiment, as shown in fig. 2, a first water stop 3 is disposed at a joint of the lower wall structure 1 and the upper wall structure 2, and two side edges of the first water stop 3 are buried in the lower wall structure 1 and the upper wall structure 2, respectively. Set up first waterstop 3 and can improve the water-proof effects of each pipe gallery section, this first waterstop 3 adopts the steel limit waterstop, and is not less than 10cm with lower floor's wall structure 1 and upper wall structure 2's overlap joint length (also bury the length in lower floor's wall structure 1 and upper wall structure 2 underground).
In the preferred embodiment, as shown in fig. 2, a cement mortar layer 4 and a polyethylene foam board 5 are sequentially filled in the butt joint seam of two adjacent pipe gallery sections from inside to outside to improve the connection strength and the sealing property.
In this embodiment, preferably, as shown in fig. 3, the butt joint of two adjacent pipe gallery sections is provided with a second water stop 6, and the second water stop 6 covers the outside of two adjacent pipe gallery sections and seals the butt joint gap of the two adjacent pipe gallery sections. Set up second waterstop 6 and can improve the water-proof effects of two sections adjacent pipe gallery section butt joints department, this second waterstop 6 is the rubber waterstop, adopts expansion bolts and the concrete pipe culvert structural connection of two sections adjacent pipe gallery sections.
This embodiment is preferred, when the piping lane section construction through the intersection, sets up the steel trestle on the foundation ditch of excavation, makes the piping lane construction of key intersection incessant, has reduced the construction joint seam for the construction progress, has practiced thrift the cost.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (7)
1. A construction method of a subway vehicle section pipe gallery is characterized by comprising the following steps: the construction method is that the pipe gallery to be constructed is divided into a plurality of sections of pipe gallery sections which are connected in sequence, each section of pipe gallery section is constructed respectively, and the construction method of each pipe gallery section comprises the following steps:
(S1) excavating a foundation pit;
(S2) sequentially constructing a bottom plate of a reinforced concrete structure, side walls of the reinforced concrete structures on two sides and a top plate of the reinforced concrete structure in the excavated foundation pit, wherein the bottom plate, the top plate and the side walls on two sides form a pipe culvert structure of the pipe gallery section;
(S3) backfilling soil in the foundation pit.
2. The construction method according to claim 1, characterized in that: in the step (S1), when excavating the foundation pit, an excavating machine is first used to excavate the foundation pit to a depth position at least 30cm higher than the preset depth of the foundation pit, and then the foundation pit is manually excavated to the preset depth of the foundation pit.
3. The construction method according to claim 1, characterized in that: in the step (S2), the side walls on both sides are divided into an upper layer wall structure and a lower layer wall structure, the lower layer wall structure is formed by casting when each side wall is constructed, and the upper layer wall structure is cast after the lower layer wall structure is watered, cured and formed.
4. The construction method according to claim 3, wherein: the water-stop structure is characterized in that a first water stop is arranged at the joint of the lower wall structure and the upper wall structure, and two side edges of the first water stop are buried in the lower wall structure and the upper wall structure respectively.
5. The construction method according to claim 1, characterized in that: the butt joint department of two sections adjacent pipe gallery sections is equipped with the second waterstop, the cladding of second waterstop is in the outside of two sections adjacent pipe gallery sections and seals the butt joint gap of two sections adjacent pipe gallery sections.
6. The construction method according to claim 5, wherein: and a cement mortar layer and a polyethylene foam plastic plate are sequentially filled in the butt joint seam of the two adjacent sections of pipe gallery sections from inside to outside.
7. The construction method according to claim 1, characterized in that: when the pipe gallery sections passing through the intersection are constructed, a steel trestle is erected on the excavated foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010679430.6A CN111894034A (en) | 2020-07-15 | 2020-07-15 | Construction method of subway vehicle section pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010679430.6A CN111894034A (en) | 2020-07-15 | 2020-07-15 | Construction method of subway vehicle section pipe gallery |
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| Publication Number | Publication Date |
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| CN111894034A true CN111894034A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010679430.6A Pending CN111894034A (en) | 2020-07-15 | 2020-07-15 | Construction method of subway vehicle section pipe gallery |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208328993U (en) * | 2018-06-13 | 2019-01-04 | 湖北省城建设计院股份有限公司 | For precast assembly pipe gallery seam crossing waterproof construction |
-
2020
- 2020-07-15 CN CN202010679430.6A patent/CN111894034A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208328993U (en) * | 2018-06-13 | 2019-01-04 | 湖北省城建设计院股份有限公司 | For precast assembly pipe gallery seam crossing waterproof construction |
Non-Patent Citations (2)
| Title |
|---|
| 张瑜: ""综合管廊施工技术总结"", 《山西建筑》 * |
| 雷升祥等: "《综合管廊与管道盾构》", 31 July 2015, 中国铁道出版社 * |
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Application publication date: 20201106 |
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