KR100588185B1 - A construction method of concrete retaining wall - Google Patents

Abstract

The present invention is to solve the problems caused by the waste liquid treatment and the environmental pollution caused by the use of a stable solution such as bentonite during the construction of the conventional concrete wall, the guide plate at the same time to excavate the concrete in the ground After press-in, the concrete is poured into the guide plate, and the wall is continuously formed in the same way as described above, so that the grouting method for improving the water-repellency can be carried out, and it can proceed even in a narrow space in the downtown. The present invention relates to a concrete earthquake construction method that forms eco-friendly earthquake walls because there is no industrial waste generated by using fresh water instead of water.

Dirt method, slurry wall, downtown construction, ground collapse prevention, concrete barrier wall,

Description

A construction method of concrete retaining wall             

1 is a flow chart showing the construction method of the concrete retaining wall formed in accordance with the present invention.

Figure 2 is a perspective view showing in one embodiment a guide form fixed to the upper trench

Figure 3a is a side view showing in one embodiment a guide plate pressed into the ground.

3B is a longitudinal cross-sectional view of FIG. 2A.

Figure 3c is a side view showing the connection of the guide plate in one embodiment.

Figure 4 is a side view showing an excavator used in one embodiment of the present invention.

Figure 5a is a plan view showing in one embodiment a guide form installed after trench excavation.

Figure 5b is a side view showing a drawer installed on the upper surface of the guide of Figure 5a in one embodiment.

Figures 6a-6e is a side view showing an embodiment of the present invention.

<Code Description of Main Parts of Drawing>

10. Guide Form Installation Step 20. Guide Plate Pressing and Excavation Step

30. Desending Step 40. Wall Preparation Step 50. Wall Formation Step

61. Guide plate 61a. Guide steel plate 62.

63. Locking groove 64. Keyway 65. Connector

66. Connecting member 70. Puller 71. Key

80. Excavator 81. Cutting cutter 83. Soil suction

90. Trench 91. Order plate 92. Rebar network

93. Concrete injection pipe 100. Guide form 101. Entry

102. Support 103. Steel member

The present invention relates to a concrete mud wall construction method, and more particularly, to a concrete mud wall construction method for preventing the collapse of the soil during the construction of the mud wall, introducing the reinforcing bar after the excavation of the ground, and pouring concrete .

Commonly used earthwall construction is a type of soil earthing along the excavation plan line in the ground, such as driving at predetermined intervals, and the earthwork plate between the H-beams excavated step by step while excavating the ground. After installing the temporary earthquake wall by stacking them, when the excavation is completed, the underground retaining wall of the building is installed, and the temporary retaining wall outside the underground retaining wall is demolished or buried in the ground.

As mentioned above, the construction of the temporary earthquake by H-shaped steel and earth plate is relatively simple in construction, economical, and short in air, but has problems such as water repellency, grouting reinforcement, and heaving.

Conventionally, in order to solve the above problems, a sheet pile method, a heat-sucking soil film method, a slurry month method, and the like have been applied.

Among them, the sheet pile method is a method that connects steel board piles to form a wall, and is suitable for soft ground. The casting method is a method of forming soil wall by heating the cast-in-place concrete pile continuously. It is excellent, the rigidity of the wall is high and the surrounding settlement is small, but the air is relatively long and the construction cost is increased.

In addition, the slurry wall method is a method of introducing a reinforcing bar with a stabilized liquid in underground excavation to prevent the collapse of the ground, and then placing concrete walls continuously to install concrete walls. In consideration of the influence and the like, the above construction method is mainly suitable for downtown construction.

However, the slurry month method has a problem such as environmental pollution due to the joint treatment of the continuous portion and waste liquid treatment of the stabilizer.

The present invention has been made in order to solve the above-described problems, and after pressing the guide plate at the same time as the excavation to the ground, the concrete is poured, when the concrete is cured, excavating the ground along the excavation plan line, Since it is a method of continuously making the wall, there is no need for a grouting method to improve the water-receiving ability. It is an object of the present invention to provide an improved construction method to provide a concrete earthwall construction method that can proceed from ~ 600mm).

The present invention comprises a guide form installation step 10, guide plate press-fitting and excavation step 20, the desending step 30, the wall preparation step 40, the wall forming step 50 in the construction of concrete retaining wall As a concrete earthquake wall construction method characterized in that the front, rear, left and right expandable rotary excavator 80 can be used, noise is reduced, and the degree of rigidity and rigidity is improved, not only suitable for the protection of the surrounding structure, It does not use waste water, and it is a process that is eco-friendly.

Hereinafter, concrete concrete wall construction method according to the present invention with reference to the drawings as follows.

1 is a process explanatory diagram showing the construction method of the concrete retaining wall according to the present invention step by step and order, this process step is a guide form installation step 10, guide plate press-fitting and excavation step 20, desending step 30 ), The wall is prepared by dividing the step 40, the wall forming step (50).

In the first step of installing the guide form step 10, the trench is excavated along the excavation line of the building for the construction of concrete retaining walls and installs the guide form.

Figure 2 is a perspective view of the guide form (guide form) 100, the guide form 100 has a function as a support for setting (equipment) equipment, such as drilling equipment and pullers. The guide form is composed of a support portion 102 for fixing after the inlet 101 and the drawer 70 is inserted into the ground, the two guide form 100 is the opposing inlet 101 And the support portion connected to the upper portion of the inlet portion 101 is connected to the outside has a symmetrical structure. The side surface of the lead portion 101 is connected to the steel member 103 to maintain a predetermined width.

In the second step guide plate pressing and digging step 20, after the guide form is installed, the guide plate 61 is interposed in the drawer 70 mounted on the top of the guide form, and then press-fits to the space where the trench is carried out.

The guide plate 61 is coupled to four separate guide steel plates 61a, and a locking groove 63 and a locking jaw 62 are provided on the side surface of the guide steel plate 61a. The groove 63 and the locking jaw 62 are coupled to each other to form a guide plate 61.

The coupling of the guide plate 61 forms a rectangular guide plate 61 by inserting and fixing a guide steel plate 61a having a locking jaw 62 formed therein into a processing recess groove 63 as shown in FIG. 3A. .

3b is a front view of the guide plate 61, the connection hole 65 is installed on the upper and lower portions of the guide plate 61, the connection hole 65 is guide plate (received in accordance with the depth of the drilling depth ( The guide plate 61 is newly fixed to the upper portion of the 61, as shown in Fig. 3c by the connecting member 66, and then guide the guide plate 61 to the excavation depth.

The guide plate 61 is introduced to the excavation depth excavated by the drawer (70).

The drawer 70 is installed to draw or draw the guide plate 61 on the upper surface of the guide form.

5 is a plan view showing the coupling of the drawer 70 and the guide plate 61, the coupling of the drawer 70 and the guide plate 61 is a keyway 64 provided on the side of the guide play 61 The key 71 of the drawer is fitted and fixed.

After fixing the guide plate 61 to the drawer 70 as described above, the excavator 80 with the cutting cutter is inserted into the guide plate 61.

As shown in FIG. 3, the excavator 80 includes a cutting cutter portion 81 that extends to the left and right sides before and after cutting the ground in the lower portion, and a soil intake port 83 for desending the cut ground. It consists of.

The excavator 80 is inserted by an external crane (crane), it is preferable to attach and monitor a separate sensor to manage the verticality of the excavator (80).

After the excavator 80 is inserted into the guide plate 61, the excavation of the ground and the indentation of the guide plate 61 proceed simultaneously.

At this time, the cutting cutter of the excavator 80 for the smooth insertion of the guide plate 61 is extended to the front, rear, left and right, to excavate a space wider than the width of the guide plate when ground excavation.

When the excavation work is completed up to the excavation depth for forming the concrete retaining wall, the excavation work and the introduction of the guide plate 61 is stopped.

The third step is the desending step. When the concrete is placed, it performs the desending to prevent the substitution ability of the concrete, and excavates while introducing fresh water through the fresh water injection pipe inserted externally for the desending. Inhale the soil.

After finishing the desending operation, the concrete inlet tube 93 for inserting the order plate 91 and the reinforcing bar 92 and placing the concrete is inserted.

The order plate 91 is inserted into the surface where the concrete barrier wall is continuously connected, the first installed concrete barrier wall inserts and secures the order plate 91 on both sides, and then installed the order iron plate ( 91 inserts and fixes the order plate 91 on the side of the unconstructed concrete retaining wall.

After the insertion of the order plate 91, the externally manufactured reinforcing bar 92 is inserted, and the concrete injection pipe 93 for placing concrete is inserted.

When the wall preparation step is completed as described above, the concrete is poured through the concrete injection pipe.

The guide plate 61 drawn in at the same time as the excavation during the pouring of the concrete is drawn out, the drawing of the guide plate 61 is discharged to the outside by the drawer 70 interposed on the upper guide foam.

Discharge of the guide plate 61 and separation of the guide plate 61 proceed in the reverse order of the introduction of the guide plate 61, whereby the concrete retaining wall is constructed.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention 6a will be described in detail.

Figure 6a is a trench (70) to excavate the trench in the excavated space along the excavation plan line of the building to construct the concrete retaining wall of the present invention, the drawer 70 is attached and fixed to the upper surface of the guide form.

FIG. 6B is a side view illustrating the guide plate 61 and the excavator 80 inserted into the ground in the extractor 70 installed on the guide form, in which the guide plate 61 is a key 71 of the extractor 70. The guide plate 61 is drawn into the ground at the same time as the lowering of the drawer 70.

At this time, the excavator 80 is inserted at the same time as the excavator 80 is inserted into the guide plate 61 and the excavator 80 is supported by the train.

The excavator 80 pays attention to the interference caused by the simultaneous operation with the guide plate 61, and drills while monitoring the vertical degree.

Figure 6c is after the completion of the excavation to the reference depth to inject fresh water (콘크리트 水) for concrete pouring, and after the fresh water inflow and performs the descending.

6D illustrates that the excavator 80 is removed after the de-sending operation, and after the removal of the excavator, the order plate 91 and the rebar mesh 92 are inserted.

FIG. 6E is a side view illustrating the placing of concrete in the excavation hole into which the order plate 91 and the reinforcing bar 92 are inserted, thereby drawing the guide plate 61 at the time of placing and showing the concrete for forming the concrete barrier wall. , The drawing of the guide plate 61 is made in the reverse order of the drawing of the guide plate 61.

After installing the guide form in the trench in the trench was formed along the excavation plan line of the building, the concrete clogging wall is formed by the above method to complete the concrete clogging wall.

The present invention to solve the conventional problems caused by the use of a stable solution, such as bentonite when constructing the concrete wall with concrete, and problems such as environmental pollution resulting from the vertical excavation using an excavator for concrete placement on the ground After the plate is pressed in, the concrete is poured, and when the concrete is cured, the ground is excavated according to the excavation plan line to form a retaining wall continuously, without performing a separate grouting method to improve the water repellency, It can proceed in a narrow space in the downtown area, and there is no effect of industrial waste generated by using fresh water instead of completion, so it is possible to form an eco-friendly wall.

Claims (4)

In the construction of concrete wall, A guide form installation step (10) for installing a guide form (100) consisting of a lead portion (101), a support portion (102) and a steel member (103) in a space in which the trench is carried out according to the excavation plan line; After the guide form 100 is installed, the guide plate 100 is mounted on the guide form 100, the guide plate 61 interposed on the drawer 70, and the excavator 80 for ground cutting. Inserting the inside of the guide plate 61, the guide plate pressing and digging step 20 for simultaneously drilling the ground and pressing the guide plate; When the excavation work to the excavation depth is completed, the desending step (30) for sucking the excavated soil while introducing fresh water through the fresh water inlet pipe inserted from the outside; And the iron plate 91 is inserted and fixed to the surface of the earth wall is continuously connected, the wall preparation step 40 is inserted into the reinforcing bar 92 and the concrete injection pipe 93 after the insertion of the order iron plate 91 and ; A wall forming step 50 for discharging the guide plate 61 drawn at the same time as the concrete pouring to the outside using the drawer 70; Concrete wall construction method, characterized in that consisting of. The method of claim 1, wherein the retaining wall (62), the guide groove (61) using a guide plate (61a) formed with a locking groove (63) and a key groove (64) formed mutually. The method of claim 1, wherein the concrete barrier wall construction method characterized in that the insertion of the order plate (91) in the wall preparation step. The concrete soil wall construction method of Claim 1 which uses the excavator which consists of the cutting cutter part 81 and the earth-and-water suction port 83 which can expand and contract left and right before and after.

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