KR100959947B1 - Roof structure and constructing method thereof giving tension on the ground - Google Patents

Abstract

PURPOSE: A loop structure which applies tensile force in the ground and a construction method thereof are provided to make the stable permanent loop structure by providing the vertical rigid to a roof assembly. CONSTITUTION: A loop structure which applies tensile force in the ground comprises a loop assembly(10), a tensile member(20) and a girder(40). The loop assembly comprises a plurality of steel pipes(1), a connecting member(2), a precast concrete box. The roof assembly is installed in the ground with a specific formation. The tensile member is installed in the roof assembly in the width direction. The tensile member supports the rope assembly with the tensile force. The girder is constructed inside the loop assembly and supports a projection of the loop assembly.

Description

ROOF STRUCTURE AND CONSTRUCTING METHOD THEREOF GIVING TENSION ON THE GROUND}

The present invention relates to a loop structure, and more particularly, it is possible to construct a permanent structure secured even in a small cross section by securing longitudinal rigidity in the loop structure, and installing a tension member by installing a tension member at both ends of the loop structure. The present invention relates to a loop structure and a construction method for imparting a tensile force on the ground to facilitate a tensioning operation.

In general, there is a structure construction method by the attachment and non-attachment in a way to build the structure in the ground.

If it is necessary to install sewage rocks, underground roadways, tunnel structures, etc. across existing roads and railroads, it is difficult to transfer obstacles due to construction, or it is impossible to fix them due to obstacles and obstacles in vehicle communication. In the non-adhesive structure construction method, the forward base and the arrival base of the working tool concept are essential on both sides of the crossing road and the stored object, and the representative non-adhesive underground structure construction method includes the pull dog artificial method and the steel pipe loop method. Can be mentioned.

In the case of the ship prosthesis method, the steel pipes for supporting the housing of about 600mm in advance are horizontally press-fitted in the direction of the reach base from the forward base, and then cross the ground from the reach base on the opposite side of the ship to be towed. After binding the PC steel wire to the ship manufactured in the field, it is towed to remove the internal soil in the box, and the same towing and excavation work is repeated to install the structure in the ground.

However, this method may cause settlement of the road or obstacles on the upper part of the enclosure due to the propulsion load of the enclosure or the gap between the propulsion vessel and the temporary steel pipe installed in the underground. Therefore, when the size of the enclosure increases, the traction is restricted and the size of the workplace is large, so it is difficult to work in a deep underground space.

In addition, if the connection between the enclosures is insufficient treatment, there was a risk of leakage, etc. Due to the drawbacks of the hull prosthesis method, the steel pipe loop method is applied as a non-removable underground structure construction method.

In the conventional steel pipe loop method, steel pipe loops are formed by sequentially indenting and connecting steel pipes to the ground where the structure is to be formed, removing all the internal soil inside the steel pipe loop, and constructing the structure. The load is supported by temporary materials such as lateral support beams and temporary columns.

Briefly describing the construction process of the steel pipe loop, considering the size of the sphere to be constructed at the forward base, horizontally press-fit the temporary steel pipe of about 600 ~ 800mm to the outer surface of the sphere and cast the concrete in the steel pipe to form the steel pipe loop.

From the forward base, the inside of the steel pipe loop will be excavated, and the excavation is carried out step by step from the upper part of the steel pipe loop in consideration of the safety of the upper load and the side pressure.

At this time, the excavation is primarily to excavate the bottom of the steel pipe loop with a depth of about 3m, since the steel pipe and the steel pipe used in the steel pipe loop are connected in a ring shape, so as to H-shaped steel in the direction perpendicular to the steel pipe on the bottom and side of the steel pipe loop. Transverse support beams should be installed and supported by a number of temporary columns to support the load over the entire section.

In other words, the existing steel pipe loop is constructed by connecting the pre-indented steel pipes in an annular connection structure with a pair of L-shaped rings and T-shaped clasps attached to the central part of the steel pipe to bear the load, rather than bearing the load. It is just a concept to prevent deviations.

Therefore, there is a problem that can not secure the lateral rigidity between the connecting portion of the steel pipe loop. The lateral support beam and a larger number of temporary columns have to be installed, and the structure has to be installed to be spaced apart as much as the support beam.

After digging into the 2nd and 3rd phases, the installation pillars are carefully extended downward to complete the excavation of the earth and sand to the installation depth of the structure. Finally, the reinforcing bars and formwork for the upper slabs, walls, and lower slabs are finished. Install and pour concrete to complete the structure of underground construction.

The conventional steel pipe loop method constructed as above is highly susceptible to settlement during construction due to the problem of installing the installed temporary pillar downwardly to the installation depth after excavation, and the air is inferior to the existing installed temporary material. Of course, there was a problem that it takes a lot of construction costs.

In order to solve this problem, a technique that can be structured only through the loop without constructing a separate concrete structure has been proposed, but there is a problem in that the size of the loop is increased and the amount of rebar and concrete is increased.

In addition, the non-adhesive method using the steel pipe has a problem in determining the size of the structure by calculating only the transverse stiffness without calculating the longitudinal stiffness of the steel pipe. Therefore, in order to secure the lateral rigidity, there is a problem in that the size of the steel pipe is increased or the construction method is used as a temporary material and a separate structure must be made. That is, to date, underground structures have been constructed. All calculations have been made considering only the transverse direction.

The present invention is to solve the problems as described above, by securing the longitudinal stiffness of both sides of the steel pipe assembly through the ground to the construction of a permanent loop structure rather than the construction of a separate concrete structure without a separate concrete structure It is an object of the present invention to provide a loop structure and a construction method for imparting tensile force.

The loop structure for imparting tension in the ground according to the present invention for achieving the object as described above, a plurality of steel pipes are connected in series, or a plurality of steel pipes and connecting members are connected in series or a plurality of concrete boxes are chained A loop assembly which is electrically connected to and inserted into a predetermined shape in the ground; A roof structure installed in the roof assembly in a width direction and including a one or more tension members supporting the loop assembly by a tensile force, the roof structure forming a facility including a road without a concrete structure inside the roof assembly, At least one of both sides in the longitudinal direction protrudes from the ground to the outside to form a protrusion, the tension member is characterized in that the tension member is installed along the width direction of the loop assembly.

According to the present invention, there is provided a loop structure construction method for imparting tensile force on a ground, comprising: a first step of constructing a loop assembly having a predetermined shape in the ground using a plurality of tubes; A second step of disposing a tension member on at least one side of the tension member by installing a tension member in the loop assembly constructed through the first step; A third step of tensioning the tension end of the tension member installed in the second step; And a fourth step of digging soil inside the roof assembly after the third step, and constructing a foundation at the bottom of the excavated space, and in the first step, at least one side of both sides in the longitudinal direction of the roof assembly is provided. Protruding to the ground, the second step is characterized in that the tension member is installed on the protrusion of the loop assembly to tension the tension member from the ground.

According to the roof structure and the construction method for imparting tensile force on the ground according to the present invention, pre-stress is applied to both ends of the steel pipe assembly through tension members to secure rigidity in the longitudinal direction, thereby providing a separate concrete structure in the steel pipe assembly. By arranging only the road surface without construction, it is possible to construct a permanent roof structure that can be used to build roads, thereby reducing construction costs and reducing air.

In addition, since both ends of the steel pipe assembly protrude to the ground, the tension member is installed on the ground, and the tension member is tensioned. Therefore, the tension member may be easily installed and manipulated.

1 to 4 are a perspective view, a front view, a side view and a plan view of a loop structure for imparting a tensile force on the ground according to the first embodiment of the present invention.
5 is an exemplary view of a modification of the loop structure to impart a tensile force in the ground according to the first embodiment of the present invention.
Figure 6 is a perspective view of a loop structure for imparting tensile force in the ground according to the second embodiment of the present invention.
7 and 8 are views illustrating a modification of the loop structure for imparting tensile force in the ground according to the second embodiment of the present invention.
Figure 9 is a front view of the loop structure to impart the tensile force in the ground according to the third embodiment of the present invention.

≪ Example 1 >

As shown in Figures 1 to 4, the loop structure construction method for imparting a tensile force on the ground according to the present embodiment is as follows.

(S10) roof assembly and girder installation.

Loop structure 100 according to the present invention is made of a loop assembly 10 (hollow-type steel pipes 1 are connected to each other in series or steel pipes 1 are connected through a connecting member 2, the ceiling and left and right It is a structure that forms a side wall portion or an arcuate structure) to apply a tension member to secure longitudinal rigidity, the hollow steel pipe (1) constituting the loop assembly 10 is formed in a variety of forms, such as circular, square In addition, a precast concrete box may be used instead of the steel pipe 1, and the connecting member 2 is not limited to that shown in the drawings.

Although not shown in the drawings, the reinforcing bars in the longitudinal direction of the steel pipe (1) and the connecting member (2).

The tension members 20 and 30 may be installed on the ceiling and both side wall portions of the roof assembly 10, respectively, and both ends of the roof assembly 10 may be installed from the ground to the outside so that the tension members 20 and 30 may be installed on the ground. It protrudes and the protrusion part 10a is formed. Since the length of the protrusion 10a of the roof assembly 10 is as long as the tension members 20 and 30 can be installed, the length is not limited thereto.

A girder 40 may be installed inside the roof assembly 10 to support the protrusions 10a of the roof assembly 10 and to install the tension members 20 and 30. The girder 40 is not necessarily constructed, but may be selectively constructed. When the girder 40 is selected, the girder 40 is not formed over the entire span of the loop assembly 10 but is formed only in the protrusion 10a of the loop assembly 10. The girder 40 may be a reinforced concrete structure or a steel structure. That is, after the construction of the roof assembly 10 or before the installation of the formwork and reinforcing the reinforcing bars inside the formwork, the concrete is installed in the formwork or the steel girders 40 by installing a steel structure.

In order to install the tension members 20 and 30, sheath pipes 21 and 31 may be installed in advance when the girders 40 (or the girders 40 and the loop assembly 10) are installed.

(S20) Tension material installation.

In order to help the understanding of the tension members 20 and 30, the tension member of the ceiling is referred to as a first tension member 20, and a tension member of both sidewall portions is referred to as a second tension member 30.

The first and second tension members 20 and 30 may be installed in the sheath pipes 21 and 31 so as to be tensionable. The first and second tension members 20 and 30 may be installed in the girder 40 along the width direction, and the first and second tension members 20 and 30 may be provided in the drawing. It may be installed, steel bar, steel wire, etc. can be used.

In detail, when the sheath pipes 21 and 31 are installed at the time of construction of the girder 40 and the first and second tension members 20 and 30 pass through the girder 40 and the loop assembly 10, the girder ( 40 and sheath pipes 21 and 31 are installed inside the roof assembly 10.

Sheath pipe (21, 31) is a plurality of pipes are connected in series to provide a space for installing the first and second tensile material (20, 30).

When the sheath pipes 21 and 31 are installed, the first and second tension members 20 and 30 are inserted into the sheath pipes 21 and 31. The first and second tension members 20 and 30 may be installed in a straight line or convexly installed toward the inside of the loop assembly 10 (at the side of the road). At least one of both ends may be configured as a tension end and the rest may be fixed. (In the present invention, a fixed end is provided on one side and a tensile end is provided on the other side).

In the figure, the first and second tension members 20 and 30 are shown to be convexly installed toward the inside of the roof assembly 10 (the road side), and in the drawing, the central portion penetrates the girder 40 and the Although the fixed end and the tension end are illustrated as being installed in the steel pipe 1 or the connecting member 2 of the loop assembly 10, the first and second tension members 20 and 30 pass through the girder 40 and the fixed ends at both ends thereof. A tensile end may be installed on the girder 40.

(S30) roof assembly concrete pour.

Concrete (C) is poured into the hollow part of the steel pipe (1) and the connecting member (2) constituting the roof assembly (10).

Since the roof assembly 10 of the portion unrelated to the first and second tension members 20 and 30 is the same as the conventional structure and the construction method is omitted.

(S40) tensile material tension.

When the concrete (C) poured in step (S30) is cured, the first and second tensile materials 20 and 30 are respectively tensioned.

Since the tension ends of the first and second tension members 20 and 30 are disposed outside the roof assembly 10, but not in the ground, the first and second tension members 20 and 30 may be disposed by the operator. Tensile ends of the two tensile members 20 and 30 may be tensioned.

When the first and second tension members 20 and 30 are tensioned, the ceiling and both sidewall portions of the roof assembly 10 are applied in a direction to gather together in a straight line according to the installation form of the first and second tension members 20 and 30, respectively. In the case of a curved shape, a force against the outside of the loop structure 10 is generated.

When the tension of the first and second tension members 20 and 30 is completed, the tension ends are fixed. Since the tension and fixation of the first and second tensile materials 20 and 30 are well known, those skilled in the art can fully implement the present invention even if the detailed description is omitted.

In this way, the first and second tension members 20 and 30 are installed in the ceiling and both sidewalls of the roof assembly 10.

(S50) excavation and foundation construction.

Through the above process, the construction of the roof assembly 10 and the first and second tension members 20 and 30 having both the ceiling portion and both side wall portions is completed, and in the following, a work for constructing a road or the like inside the roof assembly 10 is performed. .

First, the soil inside the roof assembly 10 is excavated, and concrete is poured into the bottom of the excavated space to construct the foundation.

The roof structure 100 according to the present embodiment has its own strength, so that a separate concrete box structure is not installed therein and a support beam is not used.

Meanwhile, the first and second tension members 20 and 30 are for securing longitudinal stiffness of the loop structure 100, and in the present embodiment, the third tensile material 50 is also used to secure the lateral rigidity of the loop structure 100. Can be applied.

The third tensile member 50 is the same product as the first and second tensile members 20 and 30, and is wired inside the steel pipe 1 or the connecting member 2 constituting the roof assembly 10 or the concrete box not shown. And both ends, that is, the fixed end and the tension end, are disposed outside the loop assembly 10.

The third tensile material 50 may be installed convexly toward the straight form or the bottom and may be installed through the sheath tube.

The third tensile material 50 may be applied to the inside of all the steel pipe 1 and the connecting member 2 (or concrete box) constituting the loop assembly 10 or a plurality may be installed at regular intervals.

According to the first and second tension members 20 and 30 configured as described above, the roof structure 100 is structurally stable by generating a force against external force on the ceiling and both sidewall portions of the roof assembly 10.

5 is a modified example of the construction method of the roof structure for imparting tensile force on the ground according to the present embodiment, and is effective when there are many lanes of the road, that is, when the width of the roof structure 100 is wide and continuous span is high.

That is, when the width of the roof structure 100 is narrow, vertical support walls are not required in the girder 40, but when the number of lanes is large and the width is wide, the one or more support walls 41 in the girder 40 through the structural review. Is formed.

In this case, the first tension member 20 may be installed in a straight line shape, convex toward the bottom, and in the form of a wave. When the wave is installed in the wave form, the first stretcher 20 may correspond to the support wall 41 of the girder 40.

<Example 2>

As shown in Figure 6, the loop structure construction method for imparting a tensile force on the ground according to the present embodiment, compared to the first embodiment, the girder 40 to the outside of the assembly of the steel pipe (1) and the connecting member (2) And the roof assembly 10 is suspended by the first and second tension members 20 and 30.

After the roof assembly 10 is constructed or before construction, the girder 40 is constructed. At this time, the sheath pipe is installed for the installation of the first and second tension members 20 and 30, which is the same as the first embodiment.

The first and second tension members 20 and 30 may be linearly or convexly installed toward the inside (road side) of the roof assembly 10.

Although not shown in the drawings, the third tensile material for securing the lateral rigidity may also be applied in this embodiment.

In the first embodiment, since the girder 40 is disposed inside the steel pipe 1 and the connecting member 2 and occupies the cross-sections at both inlet and outlet sides of the roof assembly 10, the roof assembly 10 is as much as that. In this embodiment, the girder 40 is disposed outside the steel pipe 1 and the connecting member 2 so as not to occupy the cross-section of both inlet and outlet sides of the roof assembly 10, so that the roof assembly 10 Does not change the size of).

In addition, the first and second tension members 20.30 secure the support force against the external force by applying a force in the direction in which the first and second tension members 20.30 are pulled outwardly from the outside of the roof assembly 10.

FIG. 7 illustrates an example of the case where there are many lanes of a road, that is, a wide and high continuous span of the roof structure 100.

The wide loop structure 100 is constructed with one or more support walls 41 therein, and a plurality of first tension members 20 are installed.

For example, the plurality of first tension members 20 may be fixed to the fixed end while being convexly installed toward the inside of the roof assembly 10 such that the central portion penetrates the girder 40 and one or more steel pipes 1 or the connecting member 2. A stage is disposed outside the girder 40.

The plurality of first tension members 20 are installed so that a part overlaps when viewed from the front, thereby providing longitudinal stiffness to all regions of the ceiling of the roof structure 100.

The second tension member 30 has a quantity selected to fit the height of both side wall portions of both side wall portions of the roof structure 100, is installed in the same form as the first tensile material 20, and the fixed end and the tension end are girder 40. Is placed outside of.

FIG. 8 is a modification of FIG. 7, in which only one first tensile material 20 is used.

That is, when the width of the loop structure 100 is wide, it is not limited to using a plurality of first tensile materials 20, and one first tensile material 20 can be provided in a waveform. In this case, the convex portion toward the upper portion of the first tensile material 20 may be a position corresponding to the support wall 41.

<Example 3>

As shown in FIG. 9, in this embodiment, the girder 40 surrounds the loop assembly 10. That is, the roof assembly 10 is disposed inside the girder 40.

The first and second tension members 20 and 30 may be installed in various ways, such as a straight line and a convex shape toward the bottom, and one or more quantities may be applied. That is, for example, one of the first tensile material 20 may be installed in a waveform as shown in the figure, alternatively, a plurality of first tensile material may be installed as in the second embodiment.

1: steel pipe, 2: connecting member
10: loop assembly, 20, 30, 50: first to third tensile material
40: girder, 41: support wall

Claims (11)

A loop assembly 10 in which a plurality of steel pipes are connected in series, a plurality of steel pipes and a connecting member are connected in series, or a plurality of concrete boxes are connected in series, and inserted into a predetermined shape in the ground;
At least one tension member (20) installed in the loop assembly in a width direction and supporting the loop assembly by a tension force;
A roof structure including a girder 40 installed at a periphery of a protrusion of the roof assembly and supporting the roof assembly, the facility including a road without a concrete structure inside the roof assembly,
A protrusion 10a protruding from the ground to the outside is formed on at least one of both sides of the roof assembly in the longitudinal direction, and the tension member 20 is installed across the loop assembly and the girder to lower the loop assembly through the girder. Tensile force on the ground, characterized in that the tensioning or supporting the loop assembly suspended from the top. delete delete The method of claim 1, wherein the inside of the loop assembly is installed in the longitudinal direction and both sides of the fixed end and the tension end is installed on the protrusions, characterized in that it comprises one or more tension members 50 to impart the lateral rigidity to the loop assembly. Loop structure which gives tension on the ground. A first step in which a plurality of steel pipes are connected in series, a plurality of steel pipes and a connecting member are connected in series, or a plurality of concrete boxes are connected in series to construct a loop assembly having a predetermined shape;
A second step of disposing a tensile end in at least one end of the tension member by installing a tension member in the loop assembly constructed through the first step;
A third step of tensioning the tension end of the tension member installed in the second step;
Comprising a fourth step of excavating the soil in the inside of the loop assembly when the tension of the tension member is completed by the third step, and constructing the foundation on the bottom of the excavated space,
In the first step, the protrusion 10a is formed by protruding one or more end portions of both sides of the roof assembly in the longitudinal direction to the ground.
In the second step, the construction of the loop structure to impart a tensile force on the ground, characterized in that the tension member is installed on the protrusion of the loop assembly to tension the tension member on the ground. The method of claim 5, wherein the first step in the construction of a loop structure to impart a tensile force on the ground, characterized in that for supporting the loop assembly around the loop assembly and the girders 40, the tensile end of the tension member is disposed Way. The method of claim 6, wherein in the first step, the girder is constructed outside of the roof assembly, and in the second step, the tension member is convex toward the inside of the structure, so that the center portion of the tension member is attached to the girder and the loop assembly. The method of constructing a loop structure to impart a tensile force on the ground, characterized in that the fixing end and the tension end of the tension member is installed in the girder and supported in the pulling direction of the loop assembly after passing through. The method of claim 6, wherein in the first step, the girder is installed inside the loop assembly, and the second step causes the tension member to be convex toward the inside of the loop assembly, thereby forming a central portion of the tension member in the girder and the structure. A method of constructing a loop structure to impart a tensile force on the ground, characterized in that the fixing end and the tension end of both sides of the tension member are installed in the loop assembly after the penetration. The girder of claim 6, wherein the girder is constructed to surround the inside and the outside of the roof assembly in the first step, and the second step causes the tension member to be convex toward the inside of the structure, thereby forming a central portion of the tension member. And penetrating the structure and supporting the loop assembly in a direction of pulling the loop assembly to the outside by installing the fixed ends and the tension ends on both sides of the tension member to the girder. The method of constructing a roof structure according to any one of claims 7 to 9, wherein in the second step, the tension member is installed in a straight line with the girder. The method of claim 7, wherein in the second step, a plurality of tension members are disposed along the width direction of the loop assembly, and fixed ends and tension ends of both sides of the tension member are installed in the girder. Loop structure construction method to give tension on the ground.

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