KR20120028637A - Non-wale strut system for top-down construction and top-down construction method thereby - Google Patents

Abstract

The present invention relates to a non-wale strut system installed as a earth pressure transfer medium between the retaining wall and the reinforced concrete slab in order to support the retaining wall in the reverse construction of the underground structure, and more specifically, to the reverse construction method of the underground structure using the same. Non-Whale strut system composed of main struts, end plates or bearing beams, stud bolts and sub struts, and a method for constructing a base structure except for the basement outer wall is reversed and the basement outer wall is smoothly constructed using the same.
According to the present invention, since the construction of the underground structure by reverse drilling method uses a steel strut of the strut method, which is a simple structure composed of a member that becomes a earth pressure transmission medium between the retaining wall and the slab, the use of steel materials can be minimized. The reverse drilling method can improve construction and economics. In addition, since the basement outer wall can be sequentially installed from the bottom, it is possible to minimize the occurrence of construction joints of the basement outer wall, thereby improving the construction quality of the basement outer wall while blocking leakage caused by the construction joint.

Description

Non-whale strut system for reverse support method for continuous construction of underground exterior wall and non-whale strut system for underground construction by this method {Non-wale strut system for top-down construction and top-down construction method}

The present invention relates to a non-wale strut system installed as a earth pressure transfer medium between a retaining wall and a reinforced concrete slab in order to support a retaining wall in reverse construction of an underground structure, and more specifically, to a reverse construction method of an underground structure using the same. Non-Whale strut system composed of main struts, end plates or bearing beams, stud bolts and sub struts, and a method for constructing a base structure except for the basement outer wall is reversed and the basement outer wall is smoothly constructed using the same.

In general, the method of constructing underground structures such as the underground part of a building can be divided into the forward drilling method and reverse drilling method according to the construction direction. The netting method is a method of constructing a sequential wall, supporting it with a temporary support (horizontal brace, raker, earth anchor rock bolt, etc.), tacking to the bottom of the basement, and then constructing the structure sequentially from the basement to the bottom. . The reverse drilling method is a method of constructing a wall of clay and constructing a structure in the reverse order while further down the pit and structure work. It is called a top-down method. The reverse drilling method is able to shorten the air by the combination of the trench and the ground work, and it is possible to secure the structural stability by using the permanent structure as the supporting wall of the earth wall.

On the other hand, underground structures generally proceed with a method of constructing a structure by excavating the inner wall of the retaining wall after constructing the main heat-type retaining wall such as H-Beam + earth plate, CIP (Cast in-Place Pile), SCW (Soil Cement Wall), etc. Excavation process is accompanied by a bracing work to support external forces, such as earth pressure transmitted through the wall. Generally, temporary wall struts, earth anchors, or permanent structures are used for the construction of earthquake walls. Among these, adjacent structures in the city center are constructed with permanent structures for structural stability, shortening of air, and civil complaints. It is the most advantageous when considering aspects, such as possession inhibition.

Reinforcement using permanent structure is combined with reverse punching to become reverse support. Reverse supporting method proceeds by constructing the basement outer wall after repeating it to the lowest basement floor in reverse order while supporting the retaining wall with beams and slabs, which are horizontal interlayer structures of underground structures.

In the steel frame reverse support method, the underground outer wall is constructed first to support the retaining wall in the form of a rim beam or slab, and the remaining underground outer wall is constructed later. In other words, the basement outer wall is to be separated. Separation of the basement outer walls makes continuous reinforcement of wall reinforcement and continuous construction of wall concrete difficult, which in turn degrades the structural performance of the basement walls.In addition, it causes leakage problems through construction joints, causing corrosion of reinforcing bars and deterioration of concrete. It may also cause the durability of the back structure. In order to solve this problem, the method of FIG. 1 has been proposed.

1 is a method according to Patent No. 561385, which is installed between the earthen wall and cheolgolbo is a method of constructing a slab on the cheolgolbo. In other words, this method is to support the horizontal earth pressure indirectly by the cheolgoljang and cheolgolbo while indirectly supporting the bond between the cheolgolbo and the slab. Accordingly, in Figure 1 it is necessary to use a steel frame length of a considerable standard, which is accompanied by an increase in material costs and work load.

The present invention has been developed in order to solve the steel frame installation problem in the conventional steel frame reverse support method, there is a technical problem as follows.

First, in constructing the underground structure by reverse drilling method, it is intended to provide a method to improve the constructability and to secure economical efficiency by using a simplified material instead of the steel frame to support the retaining wall.

Second, in constructing the underground structure by reverse drilling method, other parts should be constructed in the reverse order, but only underground outer walls will be sequentially installed to provide a method that can minimize the cold joint.

In order to solve the above technical problem, the present invention provides a non-whale strut system and a reverse construction method for underground structures using the same.

The non-wale strut system according to the present invention, which is installed as a earth pressure transfer medium between the retaining wall and the reinforced concrete slab to support the retaining wall constructed by the flange pile steel and the earth wall in the reverse construction of the underground structure, A main strut connected to a flange of a flange-shaped steel for each of the thumb piles of the wall so as to protrude out of the retaining wall; It is joined to the end of the main strut is restrained to the reinforced concrete slab, the pressure plate is provided as an end plate or provided as a bearing beam connecting the main struts; A stud bolt bonded to the acupressure plate material and embedded in the reinforced concrete slab; A sub strut fixed to the main strut so as to support the earth wall of the retaining wall and to be transferred to the main strut, wherein the sub strut is composed of a truss structure of the first and second truss chords and the truss web material, or 1 truss chord and a truss web material truss structure, or cantilever structure by the cantilever is characterized in that the configuration.

The reverse construction method of the underground structure according to the present invention, while effectively supporting the earth wall using the non-wale strut system, while securing the continuous construction space of the basement outer wall advantageously the reverse construction except for the underground outer wall The basement outer wall is characterized in that it is constructed with a smooth.

According to the present invention, the following effects can be expected.

First, when constructing underground structures by reverse drilling method, the strut-type assembly, which consists of simple earth pressure transfer mediators between the retaining wall and slab, is used. Therefore, the use of steel materials can be minimized. Construction and economics can be improved. In particular, when the assembly is configured by the bolt joint method, the bolt joint part can be dismantled according to the situation and can be used exclusively in another construction, thereby greatly reducing the material cost.

Second, since the construction of the basement outer wall can be carried out sequentially from the bottom, it is possible to minimize the occurrence of construction joints of the basement outer wall, thereby improving the construction quality of the basement outer wall while blocking leakage caused by the construction joint.

1 is a construction detail that is installed cheolgolbo and strips to support the retaining wall in the conventional reverse drilling method.
Figures 2a to 2c is a construction detail of the non-wale strut system according to the present invention is installed in the direction in which the main wall of the slab reinforcing bar and the slab rebar parallel to the truss structure type.
Figures 3a and 3b is the construction details when the modified method and the truss form of the sub struts of the non-whale strut system in Figure 2c, respectively.
4A to 4C are construction details of the non-wale strut system according to the present invention installed in a direction in which the main wall of the slab and orthogonal slab is orthogonal to the cantilever structure type.
FIG. 5 is a construction detail when the modified method of assembling the sub strut of the non-wale strut system in FIG. 4c is applied.
6a to 6e is a construction sequence diagram showing a reverse construction method of the basement of the building according to the present invention.

The present invention relates to a non-whale strut system and a reverse construction method using the same. Hereinafter, the non-wale strut system and the reverse construction method will be described separately according to the accompanying drawings and preferred embodiments.

One. Non Whale Strut  system

Non-wale strut system 100 according to the present invention is installed between the retaining wall (RW) and the reinforced concrete slab (S) in the reverse construction of the underground structure, it is configured to stably support the earth pressure as the earth pressure transfer mediate wall It is characterized in that it is configured to secure the empty space for the continuous construction of.

Specifically, the non-wale strut system 100 according to the present invention includes a retaining wall RW and a support wall RW1 formed of a flange pile steel RW11 and a ground wall RW2 formed of an earth wall RW2. It is configured to be installed between the reinforced concrete slab (S), each of the thumb pile (RW1) of the retaining wall is joined to the flange of the flange-like steel (RW11) main strut 110 is installed so as to stick out from the retaining wall (RW); Acupressure plate members 120 and 130 bonded to the end of the main strut 110 and constrained to the reinforced concrete slab S; A stud bolt (140) bonded to the acupressure plate (120, 130) and embedded in the reinforced concrete slab (S); And a sub strut (150, 160) fixed to the main strut (110) so as to support the earth wall (RW2) of the retaining wall to be transferred to the main strut (110). In particular, the present invention proposes a variety of embodiments according to the configuration of the acupressure plate (120, 130) and the sub struts (150, 160).

The non-wale strut system 100 having the above-described configuration is installed at the same level as the slab S, and as a result, the main strut 110 directly supports the earth pressure transmitted through the thumb pile RW1 of the earth wall. It is delivered to (S), the sub struts (150, 160) to support the earth pressure transmitted through the earth wall (RW2) of the retaining wall is a structure to be delivered to the slab (S) via the main strut (110).

2A to 2C show a truss-type non-wale strut system 100 installed between the retaining wall RW and the slab S at a position where the retaining wall RW and the main reinforcing bar S21 of the slab rebar are arranged in parallel. Construction details. As can be seen, the non-wale strut system 100 is provided with an acupressure plate material as the end plate 120 and a sub strut 150 is provided with a truss structure of the first and second truss chords and the truss web material 153.

At the position where the earth wall (RW) and the main reinforcing bar (S21) of the slab reinforcement is arranged in parallel is the end plate 120 is sufficient, but in Figure 2a to 2c is provided with a considerable size in the main strut 110 cross section However, in order to secure the required acupressure area, the main strut 110 may be provided in an expanded size than the cross section.

The sub strut 150 by the first and second truss chords and the truss web material 153 traverses the neighboring main strut 110 at a position where the first truss chord 151 is close to the earth wall RW2 of the retaining wall. The main truss adjacent to the first truss chord 151 in a position where the second truss chord 152 faces the first truss chord 151 while being fixedly installed so as to be connected to the first truss chord. It is fixedly installed to connect across the 110, and the truss web material 153 is completed to the truss structure as it is installed to connect the first truss chord 151 and the second truss chord 152.

2A to 2C, it can be confirmed that the sub strut 150 is welded and fixed to the upper surface of the upper flange of the main strut 110 formed of the H-shaped steel by assembling the C channel. On the other hand, the material of the non-wale strut system 100 can be appropriately adopted a variety of materials, such as PC members, composite members, as well as steel frame members such as H-shaped steel, box steel pipe, c-channel, etc. 150 may be bonded to the upper surface of the lower flange of the main strut 110.

3A and 3B illustrate construction details when the sub strut 150 of the non-wale strut system in FIG. 2C is modified and applied.

FIG. 3A deforms the truss-type sub strut 150 in a bolted manner. As shown, the first truss chord 151 is composed of a fixed angle 151a and a truss body 151b for bolting the sub strut 150, and further a first stopper 154 is further provided. The fixed angle 151a in the first truss chord 151 is fixedly welded to the main strut 110 so that the horizontal portion is connected across the neighboring main strut 110 on the upper surface of the main strut 110. The vertical portion is installed against the earth wall RW2 of the retaining wall by the filler F, and the truss body 151b is mounted on the fixed angle 151a. The first stopper 154 is fixedly installed on the upper surface of the main strut 110 by welding, and the second truss chord 152 is disposed on the first stopper 154 so as to lean and fixedly installed by bolting. The truss web material 153 is provided (welded) to connect the truss body 151b and the second truss chord 152. According to this assembly, the installation of the truss-type sub strut 150 is completed, and the bolting type sub strut 150 is welded to the main strut 110 by the fixing angle 151 a and the first stopper 154. While being joined, the truss body 151b, the second truss chord 152 and the truss web member 153 are bolted to the fixed angle 151a and the first stopper 154. When the wall RW, the basement outer wall UW and the slab S are integrated to support the earth pressure, the bolted joint may be released and removed. Since the removed members (truss main body 151b, the second truss current, truss web material) can be used exclusively in other construction, it is an advantageous method for reducing material costs. In addition, in FIG. 3A, the first stopper 154 is provided as a T-shaped member, and since the first stopper 154 may simultaneously bind the sub struts 150 on both sides to restrain each other, the first stopper 154 may play an advantageous role in integral behavior. do. In addition, in FIG. 3A, it can be seen that a curling plate is attached to an end portion of the second truss chord 152 provided as a c channel to bolt the second truss chord 152 to the T-type first stopper 154.

3B, the truss substructure 150 is modified in such a manner that the second truss chord 152 is omitted. As shown, the sub strut 150 is composed of the first truss chord 151 and the truss web material 153, and further, the tie bar 155 is further provided. The first truss chord 151 is fixedly installed to connect across the neighboring main struts 110 at a position close to the earth wall RW2 of the earth wall, while the filler F fits the earth wall RW2 of the earth wall. Usually, the truss web material 153 is installed to obliquely connect the first truss chord 151 and the main strut 110. In other words, instead of omitting the second truss chord 152, the truss web member 153 is installed directly on the main strut 110 to complete the truss structure. The tie bars 155 are installed to connect the adjacent truss web materials 153 to each other for tensile reinforcement. In addition, in FIG. 3B, it can be seen that the stiffener 151c is further installed in the first truss chord 151. The stiffener 151c is advantageous in that stress transfer is advantageous from the first truss chord 151 to the truss web material 153. Install it.

4A to 4C show the cantilevered structure of the non-wale strut system 100 installed between the retaining wall RW and the slab S at a position where the retaining wall RW and the main reinforcing bar S21 of the slab rebar are orthogonally disposed. Construction details. As shown, the non-wale strut system 100 is provided with the bearing plate 130 and the sub strut 160 is provided with the cantilever 161 at the same time.

In the position where the main wall (S21) of the slab (RW) and the slab reinforcing bar orthogonally disposed, it is necessary to provide the end support points of the slab reinforcement (S2) for effective load transfer from the retaining wall (RW) to the slab (S). In order to solve this by connecting the main struts 110 to the bearing beams 130 and continuously installing each other. As a result, it is possible to omit an edge beam that has been installed below the end of the conventional deck plate (S1). In Figures 4a to 4c is provided with a bearing beam 130 of H-shaped steel, but of course, according to the structural design can be adopted steel frame members, such as box steel pipe, c-channel. On the other hand in Figure 4a it can be seen that the stud bolt 140 is bonded to both sides of the bearing beam 130, the stud bolt 140 toward the slab (S) contributes to the integration of the bearing beam 130 and the slab (S). And the opposite stud bolt 140 contributes to the integration of the bearing beam 130 and the basement outer wall (UW).

 The cantilever structure of the sub strut 160 is disposed so that the cantilever 161 protrudes from the main strut 110 along the earth wall RW2 of the retaining wall for each main strut 110, and is fixed to the main strut 110. On the other hand, it is completed by being installed against the earth wall (RW2) of the retaining wall by the filler (F). Furthermore, to reinforce the supporting force of the cantilever 161, a reinforcement material 163 for obliquely connecting the cantilever 161 and the main strut 110 may be further installed.

Furthermore, in FIG. 4B, the reinforcing bracket 170 is further installed to be joined to the flange-shaped steel (RW11) flange of the thumb pile under the main strut 110 to support the main strut 110. Since the bearing beam 130 becomes the end support point of the slab reinforcing bar S2, the slab S load is transmitted to the main strut 110 through the bearing beam 130, and thus, the main strut 110 and the thumb pile RW1. Shear force may be generated at the joints, but the reinforcement bracket 170 reinforces it.

FIG. 5 is transforming the sub strut 160 of the non-wale strut system into a bolted cantilever structure in FIG. 4C. As shown, first and second stoppers 164a and 164b are further provided to bolt the cantilever structure of the sub strut 160. The first stopper 164a is installed by welding on the upper surface of the main strut 110 and the second stopper 164b is installed by welding on the upper surface of the main strut 110 in front of the first stopper 164a. The cantilever 161 is disposed to lean against the second stopper 164b and is fixed (bolt joint), while the reinforcement material 163 is disposed to lean against the first stopper 164a and fixed to the bolt joint. The cantilever 161 and the reinforcing yarn 163 are installed to each other (welding). According to the assembly, the installation of the cantilever structure of the sub strut 160 is completed, and the first and second stoppers 164a and 164b of the bolt joint type sub strut 160 are welded to the main strut 110. On the other hand, the cantilever 161 and the reinforcement material 163 are bolted to the first and second stoppers 164a and 164b, and the barrier wall (RW), the underground outer wall (UW), and the slab (S) will be further constructed by the underground outer wall (UW). ) Can be integrated to support the earth pressure, the bolted joint can be removed by removing. The removed cantilever 161 and the reinforcement material 163 may be used exclusively in other construction. In addition, in FIG. 5, the first stopper 164a is provided as a T-shaped member, and the second stopper 164b is provided as an L-shaped member. The first stopper 164a simultaneously provides both reinforcing yarns 163 at the same time. It can be united and bound together. In addition, in FIG. 5, the stiffener 161c is further installed on the cantilever 161, and it can be confirmed that the copper plate is added to the reinforcing material 163. The stiffener 161c is for advantageous stress transfer, and the copper plate is T-type. This is for bolting the reinforcing yarn 163 provided with the c-channel in the one stopper 164a.

2. Inverse  Construction method

Inverted construction method of the underground structure according to the present invention by installing the non-wale strut system 100 described above between the retaining wall (RW) and the slab (S) while supporting the retaining wall (RW), the basement outer wall (UW) Except for the construction of the frame of the underground structure except for the first stroke, the outer wall (UW) is characterized in that later construction as a net. 6a to 6e illustrate the construction sequence of the reverse construction method according to the present invention, with reference to this will be described step by step the present invention.

(1) First step: Wall  And internal pillar construction- FIG. 6A

Construct wall of walls (RW) in line with the construction line. The retaining wall RW is constructed while the thumb pile RW1 using the flange-shaped steel RW11 is spaced at a predetermined interval while the earth wall RW2 is connected to the thumb pile RW1. In FIG. 6A or less, the continuous column wall (RW) completed by constructing the earth wall RW2 between the thumb pile RW1 having the flange-shaped steel RW11 made of H-beam with two rows of reinforced concrete piles. After constructing the retaining wall (RW), construct the inner pillar (C) into the retaining wall (RW). The inner pillar (C) is a permanent column constituting the vertical structure of the underground structure, the inner pillar (C) is constructed as a steel pillar.

(2) second step: excavation- FIG. 6B

Excavate the ground inside the retaining wall (RW). The depth of the pit is to be carried out to maintain the installation state of the retaining wall (RW) without installing a separate temporary material, but only to the depth to proceed to the second step to the sixth step.

(3) Third step: Mounting Bracket  And Support  Install (Figure 6c)

Mount the mounting bracket (B1) to the flange of the flange flange (RW11) of the thumb pile, and install the support beam (B2) along the retaining wall (RW) while mounting across the neighboring mounting bracket (B1). Mounting bracket (B1) and the support beam (B2) is a configuration for supporting the cheolgolbo (G) to be installed in the fourth step, so you only need to install in the appropriate position according to the design plan of the cheolgolbo (G). The mounting brackets (B1) and the support beams (B2) are permanently buried in the underground outer wall (UW) to be constructed in the eighth step. Considering this, the mounting brackets (B1) and the support beams (B2) should be constructed according to the installation plan. It is preferable to install so as not to protrude from the basement outer wall (UW). This frees up space for underground structures. Furthermore, it is more preferable to install the support beam B2 to be located at the center of the basement outer wall UW, in order to continuously reinforce the wall reinforcement with the support beam B2 interposed in the process of the eighth step. .

(4) Stage 4: Cheolgolbo  Install (Figure 6c)

Install cheolgolbo (G). The cheolgolbo (G) is installed in the inner pillar (C) to connect the inner pillar (C) to connect with each other, and also mounted on one end to the support beam (B2) to connect the supporting beam (B2) and the inner column (C) Attach the other end to the inner column (C). Cheolgolbo (G) is a permanent beam constituting the interlayer structure of the underground structure.

(5) Step 5: Deck Plate , Slab rebar, Non Whale Strut  System installation (Figure 6c)

The deck plate (S1) and the slab reinforcement (S2) is installed on the cheolgolbo (G) while being spaced apart from the retaining wall (RW), while the stud bolt 140 is placed on the deck plate (S1) while the non-whale strut system ( Install 100). Deck plate (S1) and slab reinforcement (S2) can be installed as well as pre-assembled truss deck as well as installed while assembling at the installation position, and also suitable for local stress in the section where the stud bolt 140 is settled In order to respond to the slab reinforcement (S2) in the process of reinforcing reinforcement (S22) may be further reinforcement (see Fig. 2a and 4a).

Meanwhile, the non-wale strut system 100 is installed between the retaining wall RW and the deck plate S1. The non-whale strut system 100 includes a slab S together with the slab S completed through the sixth step. RW) and also supports the construction space of the wall reinforcement and wall concrete to be constructed in the eighth step by maintaining an empty space between the retaining wall (RW) and the slab (S). Since the soil pile supports the earth pressure in both the thumb pile (RW1) and the earth wall (RW2), the non-wale strut system 100 should be installed with the sub strut 160 included, but the thumb pile (RW1) alone in the rock segment. In order to support earth pressure, the non-whale strut system 100 may be installed in a state where the sub strut 160 is omitted. However, when the sub strut 160 is omitted, it is preferable to properly install the brace for horizontal safety.

(6) 6th step: slab concrete pouring (Fig. 6c)

Placing slab concrete (S3) on the deck plate (S1) bordering the acupressure plate (120, 130) of the non-wale strut system to complete the slab (S) integrated with the non-wale strut system (100). As a result, the interlayer structure of the underground structure is completed, and the retaining wall RW is stably supported by the synthesis of the non-wale strut system 100 and the slab S.

(7) Step 7: repeatedly performed (Fig. 6d)

The second to sixth steps are repeated. This completes the frame of the underground structure, except for the outer wall (UW). In other words, the inner pillar (C) and the interlayer structure (beam and slab) of the underground structure are completed. In FIG. 6D, underground structures and ground structures are simultaneously constructed.

(8) Eighth Step: Underground exterior wall  Completion (Figure 6e)

Between the retaining wall (RW) and the slab (S) through the empty space between the main strut 110 and the sub struts (150, 160) of the non-wale strut system to reinforce the wall reinforcement and cast the wall concrete to the underground outer wall (UW) Completes from the bottom up.

The non-wale strut system 100 may be embedded in wall concrete. However, in the fifth step, when the non-walt strut system 100 in which the sub struts 150 and 160 are bolted onto the upper surface of the main strut 110 is installed as shown in FIGS. While removing the struts (150, 160) to pour the wall concrete. That is, the first concrete is poured into the level at which the main strut 110 of the non-wale strut system is embedded, and then the bolt joints are removed from the sub struts 150 and 160 of the non-wale strut system to remove the primary wall concrete. Underground wall (UW) construction is done by placing concrete wall second above the level. Substrates 150 and 160 separated and removed may be dedicated to other constructions.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the present invention is not limited to the above-described exemplary embodiments, and various modifications, additions and substitutions may be made without departing from the scope of the present invention. And the scope of the present invention is defined by the appended claims.

100: non-wale strut system 110: main strut
120: acupressure plate (end plate) 130: acupressure plate (bearing bo)
140: stud bolt 150, 160: sub strut
151: first truss current 151a: fixed angle
151b: Truss body 151c: Stiffener
152: second truss present 153: truss web material
154: first stopper 155: tie bar
161: cantilever 161c: stiffener
163: reinforcement material 164a: first stopper
164b: second stopper 170: reinforcing bracket
RW: retaining wall RW1: Thumb pile
RW11: flanged steel RW2: earth wall
P: Inner pillar B1: Bracket
B2: Support beam G: Steel beam
S: Slab S1: Deck Plate
S2: Slab Rebar S21: Cast Rebar
S22: Reinforcing bar S3: Slab concrete
UW: Basement Wall F: Filler

Claims (11)

Earth pressure between the retaining wall (RW) and the reinforced concrete slab (S) to support the retaining wall (RW) constructed by the flange pile (RW11) and the earth wall (RW2) in the reverse construction of the underground structure. As being installed in delivery media,
A main strut 110 which is attached to the flange of the flange-shaped steel RW11 for each of the thumb piles RW1 of the retaining wall and protrudes out of the retaining wall RW;
Bonded to the end of the main strut 110 is to restrain the slab (S), provided with an end plate 120 or acupressure plate material 120 is provided as a bearing beam 130 connecting the main struts 110, 130);
A stud bolt (140) bonded to the acupressure plate (120, 130) and embedded in and fixed to the slab (S);
And a sub strut 150 fixed to the main strut 110 to support the earth wall RW2 of the retaining wall and to be transferred to the main strut 110.
The sub strut 150,
The first truss chord is fixedly installed to connect across the neighboring main strut 110 at a position close to the earth wall RW2 of the earth wall, and is installed by the filler F to face the earth wall RW2 of the earth wall. 151);
A second truss chord 152 fixedly installed to connect across the neighboring main strut 110 at a position facing the first truss chord 151;
The truss web material 153 is installed to connect the first truss chord 151 and the second truss chord 152; Non-whale for reverse support method for the continuous construction of the basement outer wall, characterized in that it comprises a Strut system. In claim 1,
The sub strut 150,
The first truss chord 151 is fixedly welded to the main strut 110 so that the horizontal portion connects across the neighboring main strut 110 on the upper surface of the main strut 110, while the vertical portion is the filler F. A fixed angle 151a which is installed to face the earth wall RW2 of the earthquake wall), and a truss body 151b mounted on the fixed angle 151a;
The second truss chord 152 is fixed to the bolted joint on the upper surface of the main strut 110,
The truss web material 153 is a non-whale supporting method for the continuous construction of the basement outer wall, characterized in that the junction is installed so as to connect the truss body 151b and the second truss string 152 of the first truss chord. Strut system. In claim 2,
The sub strut 150,
The first stopper 154 is fixedly installed on the upper surface of the main strut 110 by welding, further comprising,
The second truss chord 152 is disposed to lean against the first stopper 154 and is fixed to the first stopper 154 by bolted joints. Non-Whale Strut System. Earth pressure between the retaining wall (RW) and the reinforced concrete slab (S) to support the retaining wall (RW) constructed by the flange pile (RW11) and the earth wall (RW2) in the reverse construction of the underground structure. As being installed in delivery media,
A main strut 110 which is attached to the flange of the flange-shaped steel RW11 for each of the thumb piles RW1 of the retaining wall and protrudes out of the retaining wall RW;
Bonded to the end of the main strut 110 is to restrain the slab (S), provided with an end plate 120 or acupressure plate material 120 is provided as a bearing beam 130 connecting the main struts 110, 130);
A stud bolt (140) bonded to the acupressure plate (120, 130) and embedded in and fixed to the slab (S);
And a sub strut 150 fixed to the main strut 110 to support the earth wall RW2 of the retaining wall and to be transferred to the main strut 110.
The sub strut 150,
The first truss chord is fixedly installed to connect across the neighboring main strut 110 at a position close to the earth wall RW2 of the earth wall, and is installed by the filler F to face the earth wall RW2 of the earth wall. 151);
A truss web member 153 installed to obliquely connect the first truss chord 151 and the main strut 110; a non-whale strut for reverse support method for continuous construction of the basement outer wall, characterized in that it comprises a system. In claim 4,
The sub strut 150,
The tie bar 155 is installed to connect the adjacent truss web material 153 mutually; Non-whale strut system for reverse support method for the continuous construction of the basement outer wall, characterized in that it comprises a further. Earth pressure between the retaining wall (RW) and the reinforced concrete slab (S) to support the retaining wall (RW) constructed by the flange pile (RW11) and the earth wall (RW2) in the reverse construction of the underground structure. As being installed in delivery media,
A main strut 110 which is attached to the flange of the flange-shaped steel RW11 for each of the thumb piles RW1 of the retaining wall and protrudes out of the retaining wall RW;
Bonded to the end of the main strut 110 is to restrain the slab (S), provided with an end plate 120 or acupressure plate material 120 is provided as a bearing beam 130 connecting the main struts 110, 130);
A stud bolt (140) bonded to the acupressure plate (120, 130) and embedded in and fixed to the slab (S);
And a sub strut 160 fixed to the main strut 110 to support the earth wall RW2 of the retaining wall and to be transferred to the main strut 110.
The sub strut 160,
Each of the main struts 110 is arranged to protrude along the earth wall RW2 of the retaining wall from the main strut 110 and is fixedly installed on the main strut 110, while being fixed to the earth wall RW2 of the retaining wall by the filler F. Cantilever 161 which is installed to face each other; Non-whale strut system for reverse support method for the continuous construction of the basement outer wall, characterized in that comprising a. In claim 6,
The sub strut 160,
Reinforcement material 163 is installed to be inclined to connect the cantilever 161 and the main strut 110; Non-whale strut system for reverse support method for the continuous construction of the basement outer wall characterized in that it comprises a further. In claim 7,
The sub strut 160,
A first stopper 164a installed on the upper surface of the main strut 110 by welding; and a second stopper 164b installed on the upper surface of the main strut 110 in front of the first stopper 164a. It is configured to include more;
The cantilever 161 is placed and fixed to lean against the second stopper 164b,
The reinforcement material 163 is disposed on the first stopper (164a) is fixed to the bolt joints, characterized in that the non-whale strut system for reverse support method for the continuous construction of the basement outer wall. The compound according to any one of claims 1 to 8,
The pressure plate is a bearing beam 130,
A reinforcing bracket 170 joined to the flange-shaped steel (RW11) flange of the thumb pile under the main strut 110 to be installed to support the main strut 110;
Non-whale strut system for reverse support method for the continuous construction of the outer wall, characterized in that the configuration further comprises. As a method of constructing the underground structure by the reverse support method while using the non-whale strut system 100 according to any one of claims 1 to 8,
While constructing the thumb pile (RW1) using the flanged steel (RW11) at predetermined intervals, while constructing the earth wall (RW2) to connect the thumb pile (RW1), construct the retaining wall (RW), and retain the retaining wall (RW). A first step of constructing the inner pillar C in the inner space;
A second step of excavating the ground inside the retaining wall (RW);
The third step of mounting the mounting bracket (B1) on the flange of the flange of the thumb pile (RW11), and mounting the mounting bracket (B2) along the retaining wall (RW) while mounting across the adjacent mounting bracket (B1) ;
Install the cheolgolbo (G), but to install the joints on both ends of the cheolgolbo (G) to the inner column (C) to connect the internal columns (C), while connecting the support beam (B2) and the inner column (C) A fourth step of mounting one end of the cheolgolbo (G) on the support beam (B2) and attaching and installing the other end of the cheolgolbo (G) to the inner pillar (C);
The deck plate (S1) and the slab reinforcement (S2) is installed on the cheolgolbo (G) while being spaced apart from the retaining wall (RW), while the stud bolt 140 is placed on the deck plate (S1) while the non-whale strut system ( A fifth step of installing 100);
A sixth step of finishing slab S integrated with the non-wale strut system 100 by pouring slab concrete S3 on the deck plate S1 with the acupressure plate material 120 and 130 of the non-wale strut system as a boundary;
A seventh step of repeating the second to sixth steps;
Between the retaining wall (RW) and the slab (S) through the empty space between the main struts 110 and the sub struts (150. 160) of the non-wale strut system, reinforce the wall reinforcement and pour the wall concrete to the underground outer wall (UW) The eighth step of bottom-up);
Reverse construction method of the underground structure by the non-whale strut system, characterized in that consisting of. 11. The method of claim 10,
The fifth step is performed while the sub struts 150 and 160 are installed with a non-wale strut system 100 which is fixedly installed by bolting on an upper surface of the main strut 110,
In the eighth step, the first concrete is poured into the concrete at the level at which the main strut 110 of the non-wale strut system is embedded, and then the bolt joints are removed from the sub struts 150 and 160 of the non-wale strut system. A method for reverse supporting construction of underground structures by a non-wale strut system, characterized in that the second concrete is placed on the primary concrete level.

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