CN203531010U

CN203531010U - Supporting platform of heat pipe trench and for crossing reserved subway station

Info

Publication number: CN203531010U
Application number: CN201320675410.7U
Authority: CN
Inventors: 康建新; 仇伟; 任发群; 秦新平; 王水
Original assignee: Beijing Urban Construction Yatai Group Co Ltd
Current assignee: Beijing Urban Construction Yatai Group Co Ltd
Priority date: 2013-10-30
Filing date: 2013-10-30
Publication date: 2014-04-09
Anticipated expiration: 2023-10-30

Abstract

A supporting platform of a heat pipe trench and for crossing a reserved subway station comprises a platform plate and columns; the columns are used for supporting the platform plate; the supporting platform is supported under a heat pipeline, around fender piles and on a waterproof curtain; the platform plate of the supporting platform and the top elevation of the reserved subway station are overlapped; the columns which are steel structure lattice columns comprise the portions located above the bottom line of a foundation pit of the reserved subway station and the portions located under the bottom line of the foundation pit of the reserved subway station; the column portions located under the bottom line of the foundation pit of the reserved subway station penetrate and are inserted into reinforcement cages which are arranged in column piles; the column portions located under the bottom line of the foundation pit of the reserved subway station and the column piles are cast into a whole through concrete. According to the supporting platform of the heat pipe trench and for crossing the reserved subway station, the structure is simple, the construction is convenient, and the supporting platform is supported under the heat pipeline and accordingly the later period of subway station construction can be normally performed under the platform, the construction is not affected by the heat pipeline which is constructed in the early period, the safe quality of the heat pipeline is not affected, and the beneficial reference is provided for similar cross problems of the underground construction.

Description

Heating power pipe trench is crossed over the support platform of reserved subway station

Technical field

The utility model relates to a kind of underground heating pipeline and installs structure.

Background technology

Along with developing rapidly of infrastructure engineering, the difficult problem running in Underground Crossing engineering construction is also continuing to increase, the uncertainty of geological condition, the complexity of site environment, engineering construction difficulty and danger have been determined, and how to solve the cross-cutting issue of pipeline and other important structure or reserved structure in project implementing process, how to guarantee that engineering carries out smoothly, it is the difficult problem often running in underground engineering construction, for example heating power pipe trench is crossed over the situation of reserved subway station, in work progress, heating pipeline intersects with reserved subway station, to construction, bring very large difficulty, affect job schedule, reduce operating efficiency, and after heating pipeline structure construction completes, the construction in later period of reserved structure affects the safety of the pipeline of constructing in advance.

Utility model content

The purpose of this utility model is to provide the support platform that a kind of heating power pipe trench is crossed over reserved subway station, the large technical problem of difficulty of construction in the time of solving heating pipeline and structure intersection; And solve the problem that construction in later period affects pipeline performance safety.

For achieving the above object, the utility model adopts following technical scheme:

A kind of heating power pipe trench is crossed over the support platform of reserved subway station, the column that comprises landing slab and support platform plate, described support platform is supported in the below of heating pipeline, all around fender post and water-stop curtain, the landing slab of described support platform overlaps with the top mark of reserved subway station is high, described column is steel work lattice column, be included in more than the bottom line of reserving Metro station excavation part and the part below the bottom line of reserved Metro station excavation, the part of described column below the bottom line of reserved Metro station excavation is interspersed in the reinforcing cage in stanchion, be integrated by concreting with stanchion.

Described column has at least two rows and parallel interval to arrange, and the spacing range of every row's column is 3.5 meters～5.0 meters.

In described column, outermost two row's columns hold subway apart from the distance of fender post and pass through.

The thickness range of described landing slab is 0.6 meter～1.6 meters, apart from 4 meters～6 meters, ground.

The altitude range of the part of described column more than the bottom line of reserved Metro station excavation is 12 meters～14 meters.

The altitude range of the part of described column below the bottom line of reserved Metro station excavation is 4 meters～6 meters.

The altitude range of described stanchion is 25 meters～38 meters.

3.4 meters～5.2 meters, the distance from top ground of described fender post.

Compared with prior art the utlity model has following characteristics and beneficial effect:

The large shortcoming of tradition difficulty of construction when the utility model has overcome heating pipeline and structure and intersects, has solved the technical problem that construction in later period affects pipeline construction safety.

The utility model is simple in structure, easy construction, by to underground existing, building and planning researching and analysing of structure, various schemes are screened relatively, design the scheme of support platform, support platform is set below heating pipeline, later stage metro station construction can normally be carried out below platform, its construction neither can be subject to the impact of the heating pipeline of construction in early stage, also can not affect the safe mass of heating pipeline, the construction and the later stage that have met heating pipeline are normally moved, the requirement of safeguarding, the efficiency of whole engineering and quality have all obtained guarantee, for similar underground construction cross-cutting issue provides favourable reference, wherein support platform is to using steel work lattice column to support as column, the normal construction at station and the needs of structure stress conversion thereof have been guaranteed, method of the present utility model, by the change of support platform and heating pipeline system of laying, has solved technical barrier, has guaranteed carrying out smoothly of construction, by improving heating pipeline absolute altitude, has avoided and conflicting on the elevation of subway station, at heating pipeline, divide into support platform, guarantee not affect the normal construction of subway station from now on, landing slab column adopts bipartial design, foundation ditch adopts concrete pile below, the above part of foundation ditch does not need concreting, the hollow out design of employing stage facilitates station structure construction, when reserving metro station construction, the column of can part cutting more than foundation ditch be removed, also replacing this position with station structure post is to guarantee the normal use of station space structures in the future, column and reinforcing cage are worn together and lift, and destroy reinforcing cage while preventing hoisting upright column, and 30t cooperation 50t crane cooperation lifting reinforcing cage and column have solved column and lifted difficult problem, prevent that column is different from reinforcing cage rigidity, a lifting destroys reinforcing cage, 4.5 meters, fender post apex distance ground, position, stake position topsoil is backfill after underground passage is removed, for guaranteeing that pile position deviation does not exceed standard, avoids collapse hole and shrinkage cavity phenomenon, the casing degree of depth need reach 5 meters, employing is jumped every stake the scheme of beating and is carried out bore forming, has solved the problem of stake pore-forming difficulty, has guaranteed construction quality and duration.

The utility model can be widely used in underground heating pipeline and cross over the engineerings such as structure.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in more detail.

Fig. 1 is the floor map of reserved subway station and heating pipeline position relationship.

Fig. 2 is the A-A cross-sectional view of Fig. 1.

Fig. 3 is application state schematic diagram of the present utility model.

Fig. 4 is the structural representation of the utility model support platform.

Reference numeral: 1-landing slab, 2-column, 3-stanchion, 4-fender post, 5-water-stop curtain, 6-heating pipeline, the reserved subway station of 7-, the reserved Metro station excavation of 8-.

The specific embodiment

Embodiment is shown in Figure 1, for the position relationship floor map of reserved subway station 6 with heating pipeline 6, shown in Figure 2, A-A sectional drawing for Fig. 1, in conjunction with Fig. 1 Fig. 2, from, in can find out heating power tunnel and intersect with reserved subway station, on the absolute altitude of heating pipeline and subway station elevation, clash, affected the normal construction of reserved subway station in the future.

Shown in Figure 3, this heating power pipe trench is crossed over the support platform of reserved subway station, the column that comprises landing slab 1 and support platform plate 1, described support platform is supported in the below of heating pipeline 6, all around fender post 4 and water-stop curtain 5, described support platform 1 high coincidence of top mark of landing slab 1 and reserved subway station 7, described column 2 is steel work lattice columns, be included in more than the bottom line of reserving Metro station excavation 8 part and the part below the bottom line of reserved Metro station excavation 8, the part of described column 2 below the bottom line of reserved Metro station excavation 8 is interspersed in the reinforcing cage in stanchion 3, be integrated by concreting with stanchion 3.

Shown in Figure 4, described column 2 has two rows at least, and parallel interval is arranged, the spacing range of every row's column is 3.5 meters～5.0 meters, in described column 2, outermost two row's columns hold subway apart from the distance of fender post and pass through, the thickness range of described landing slab 1 is 3.4 meters～5.2 meters, apart from 4 meters～6 meters, ground, the altitude range of the part of described column 2 more than the bottom line of reserved Metro station excavation 8 is 12 meters～14 meters, the altitude range of the part of described column 2 below the bottom line of reserved Metro station excavation 8 is 4 meters～6 meters, the altitude range of described stanchion 3 is 25 meters～38 meters, 3.4 meters～5.2 meters, the distance from top ground of described fender post 4.

Apply the heating power pipe trench of described support platform and cross over a construction method of reserving subway station, concrete steps are as follows:

Step 1, heightens the absolute altitude of heating pipeline to avoid reserved subway station 7 structures in later stage.

Step 2, before the drilling construction of stanchion 3, fender post 4 is carried out on ground, excavates and buries underground casing on ground, for the poor stratum of soil property, adopt the casing that is more than or equal to 5 meters, and casing should go deep into steady soil over 500 millimeters.

Step 3, carries out the drilling construction of stanchion 3, fender post 4 on ground.

Step 4 is installed reinforcing cage concreting in the hole of the fender post 4 having bored, and forms

fender post

4, and 4 of fender posts are risen out at the bottom of landing slab plate 600～800 millimeters.

Step 5, construction stanchion 3, penetrates the bottom of column 2 in reinforcing cage, column 2 is greater than 4 meters with the intersection length of reinforcing cage, by two cranes, coordinates lifting, by column and reinforcing cage handling simultaneously to the hole of the stanchion having bored and insert in the hole.

Step 6, to concreting in the hole of the stanchion 3 having bored, forms stanchion 3, and the bottom of column 2 and stanchion 3 are built and be integrated simultaneously.

Step 7 performs water-stop curtain between the stake of fender post 4, in fender post 4 outsides, performs second water-stop curtain.

Step 8, the foundation ditch of using from ground excavation construction landing slab, digs to the structure end face with reserved subway station 7.

Step 9, the reinforcing bar of colligation landing slab 1 install template on fender post 4 and column 2.

Step 10, the concrete of casting platform plate 1, forms landing slab 1, and landing slab overlaps with the top surface structure line of reserved subway station 7.

Step 11, the template of removing landing slab 1, completes the construction of support platform.

Step 12, is constructing thermal structure and lay heating pipeline in structure above landing slab.

Step 13, the heating pipeline structure surrounding backfill on landing slab, so far, completes the construction that heating power pipe trench is crossed over reserved subway station.

Step 14, when the later stage constructs in reserved subway station 7, from the reserved Metro station excavation 8 of side excavation of support platform, the bottom line of reserved Metro station excavation 8 overlaps with the top margin of stanchion 3.

Step 15, continues construction, in reserved Metro station excavation 8, builds up subway station.

After interior space of metro station structure completes, the part of column on Metro station excavation cut and removed, and replaces to the structural column of subway station.

In described step 6, by 30t, coordinate 50t crane to coordinate lifting, by column and reinforcing cage handling simultaneously, solved column and lifted difficult problem, prevent that column is different from reinforcing cage rigidity, a lifting destroys reinforcing cage.

Claims

1. a heating power pipe trench is crossed over the support platform of reserving subway station, the column that comprises landing slab (1) and support platform plate (1), it is characterized in that: described support platform is supported in the below of heating pipeline (6), all around fender post (4) and water-stop curtain (5), the landing slab (1) of described support platform (1) overlaps with the top mark of reserved subway station (7) is high, described column (2) is steel work lattice column, be included in reserved Metro station excavation (part more than 8 bottom line and the part below the bottom line of reserved Metro station excavation (8), the part of described column (2) below the bottom line of reserved Metro station excavation (8) is interspersed in the reinforcing cage in stanchion (3), be integrated by concreting with stanchion (3).

2. heating power pipe trench according to claim 1 is crossed over the support platform of reserved subway station, it is characterized in that: described column (2) has at least two rows and parallel interval to arrange, and the spacing range of every row's column is 3.5 meters～5.0 meters.

3. heating power pipe trench according to claim 2 is crossed over the support platform of reserved subway station, it is characterized in that: in described column (2), outermost two row's columns hold subway apart from the distance of fender post and pass through.

4. heating power pipe trench according to claim 3 is crossed over the support platform of reserved subway station, it is characterized in that: the thickness range of described landing slab (1) is 0.6 meter～1.6 meters, apart from 4 meters～6 meters, ground.

5. heating power pipe trench according to claim 4 is crossed over the support platform of reserved subway station, it is characterized in that: the altitude range of the part of described column (2) more than the bottom line of reserved Metro station excavation (8) is 12 meters～14 meters.

6. heating power pipe trench according to claim 5 is crossed over the support platform of reserved subway station, it is characterized in that: the altitude range of the part of described column (2) below the bottom line of reserved Metro station excavation (8) is 4 meters～6 meters.

7. heating power pipe trench according to claim 6 is crossed over the support platform of reserved subway station, it is characterized in that: the altitude range of described stanchion (3) is 25 meters～38 meters.

8. heating power pipe trench according to claim 6 is crossed over the support platform of reserved subway station, it is characterized in that: 3.4 meters～5.2 meters, the distance from top ground of described fender post (4).