KR102454814B1 - Sheathing hypothesis for the construction of structures and simplicity hypothesis in a low drilling deep way - Google Patents

Abstract

The present invention relates to a retaining construction method at a low depth of excavation, and by effectively using three major materials such as thumb piles, steel earth plates, and braces to reduce construction costs, shorten the period of time, and improve the conditions of simple construction, for this purpose This is to achieve the above improvement conditions with a prefabricated brace mounted between thumb piles and a sliding double brace structure, and a steel earth plate using the material of C-beam, by modifying the piles.
By using these materials, the mechanical performance and construction convenience of the material can be maximized, and the reuse of materials as well as the construction speed are maximized, so that the improvement of the construction period is shortened.
In order to achieve the above result, it is essential to find a special method of inserting and inserting steel earth plates into the thumb pile, and this will give a change to the shape of the brace.
In particular, in the case of thumb piles, CT thumb piles in which small standard steel plates are joined to T-beams without an inner flange as a substitute for flanges or T-thumb piles based on T-beams are used in combination, and the length of the steel earth plate is shortened a little. The movable binding steel is stretched and mounted so that it is inserted inside the web between the CT thumb piles, and the bracing beam assembled to fit the excavation width is installed on the thumb pile so that the angle can be adjusted, or installed in a sliding double brace structure It is characterized in that the configurations that make it possible are made up of major improvements,
In addition, the present invention,
○ Produce a thumb stake,
* H thumb pile 144 and T thumb pile 143 or H thumb pile 144 and CT thumb pile 145 are joined, and the back of T thumb pile 143 and CT thumb pile 145 has different steel grades. Attaching a steel plate or C-shaped steel 133 with high yield strength, drilling augers at regular intervals and installing them in the drilling hole,
○ While excavating, the manufactured steel earth plate 130 is built between the thumb piles (143, 144, 145),
* Manufacturing of the steel earth plate 130 is made to achieve a length that can be inserted into the side CT thumb piles 145,
* Panel 1 formed by combining the C-shaped steel 133 and panel 2 formed by combining the C-shaped steel 133 at intervals, each of which is manufactured separately, but by attaching steel plates to both sides of the panel so that they are combined with bolts;
* Adding a movable binding steel 141 to the inner surface of the steel earth plate 130, the binding rod 142 is fixed to the binding steel into the binding pipe 146, and installing a moving device to enter into the binding pipe 146 ,
* When the steel earth plate 130 is erected between the sides of the H thumb pile 144, the binding steel 141 is drawn out and built in so that it is supported on the inner flange of the H thumb pile 144,
* When entering between the sides of the T thumb pile (143), pull the binding steel (141) so that it is connected to the T thumb pile (143) web, and fill the both sides of the binding steel (141) and the T thumb pile (143) with the web (148) confinement with
* When entering between the sides of the CT thumb pile 145, the binding steel 141 is pushed in, and then pulled out and connected to the CT thumb pile 145 web so that it is supported on the inner flange of the CT thumb pile 145,
○ Install braces on thumb stakes (143, 144, 145),
* A fixture 131 is installed on one side of the thumb stakes (143, 144, 145), and a support 132 is installed on the opposite thumb stakes (143, 144, 145);
* Installing the fixture 131 and the support 132 on the thumb stakes 143, 144, and 145 by changing the direction to the two-stage and adjacent brace facilities,
* The fixture 131 is to install the hinge 135 on the big toe (143, 144, 145) so that it can rotate at any angle up and down;
* As a support facility, a steel pipe of a certain diameter is used as a cast steel pipe, but the joint 137 is welded to another steel pipe with a diameter sufficient to insert a cast steel pipe at the end of either side of the steel pipe, and the connected cast steel pipe is inserted. Fixing it by fixing it with a pin,
* Installing a screw jack 154 that can be compressed to reach the support hole 132 in the opposite direction at the end of the bracing pipe combined as described above,
In another method,
* The vertical sliding steel 162 and the saber 163 are installed at both ends of the top and bottom braces 103, and the connecting bolt 171 and the top and bottom beams 103 that combine them are screw jacks on either side. Or to install the hydraulic jack 161,
* Installing the rollers 165 at the top of the pile heads on both sides of the thumb piles 144 and connecting them with the vertical sliding steel 162 and the wire 166,
* To install the guide river 164 so that they can ascend and descend, and to install the support bolt 168 to prevent it from flowing down;
○ Retaining installation method for low-depth simple construction, characterized in that by additional excavation, the steel earth plate 130 is inserted into the web between the T or CT thumb piles (143, 145) in the same way as above.

Description

{Sheathing hypothesis for the construction of structures and simplicity hypothesis in a low drilling deep way }

The present invention relates to a retaining construction method at a low depth of excavation, and by effectively using three major materials such as thumb piles, steel earth plates, and braces to reduce construction costs, shorten the period of time, and improve the conditions of simple construction, for this purpose This is to achieve the above improvement conditions with a prefabricated brace mounted between thumb piles and a sliding double brace structure, and a steel earth plate using the material of C-beam, by modifying the piles.

By using these materials, the mechanical performance and construction convenience of the material can be maximized, and the reuse of materials as well as the construction speed are maximized, so that the improvement of the construction period is shortened.

In order to achieve the above result, it is essential to find a special method of inserting and inserting steel earth plates into the thumb pile, and this will give a change to the shape of the brace.

In particular, in the case of thumb piles, CT thumb piles in which small standard steel plates are joined to T-beams without an inner flange as a substitute for flanges or T-thumb piles based on T-beams are used in combination, and the length of the steel earth plate is shortened a little. The movable binding steel is stretched and mounted so that it is inserted inside the web between the CT thumb piles, and the bracing beam assembled to fit the excavation width is installed on the thumb pile so that the angle can be adjusted, or installed in a sliding double brace structure It relates to a retaining temporary structure and a temporary method for low-depth simple construction in which the components to be made consist of major improvements.

In general, for underground excavation during civil engineering works, temporary retaining facilities work is accompanied. Such retaining works are constructed while excavating or installed with a barrier wall installed in the ground in advance. Depending on the layout of the building around the construction site, it is constructed in various ways.

From this point of view, the temporary retaining facility construction in the case of large-scale underground excavation and small-scale excavation will inevitably be different.

Therefore, when looking for and examining what kind of configuration the technologies that are the background of the present invention constitute,

The feature of the invention in Korean Patent No. 10-1611897 explains that it has a structure that can be folded and unfolded, so that it is easy to install and dismantle at the construction site, thereby making it possible to shorten the construction period.

In addition, the invention in Korean Patent 10-1182820 allows excavation work without installing retaining braces in construction, and there is no work interference by conventional braces, so the construction period can be shortened, and construction costs can be reduced. It is explained that

In general, in order to prevent the collapse or spillage of soil at the edge of the excavation part during underground excavation construction, H-beams are driven into the ground at regular intervals to a predetermined depth, and then earthen plates are inserted between the H-beams. As the earth plate, wood or curved steel plate is used, and accordingly, the surrounding earth and soil does not flow into the construction site. The condition is given that it must have flexural strength that can support it.

In addition, if we look at the role of earth plate in the retaining structure, it can be seen that, in view of the above-mentioned contents, a steel plate with good flexural strength made of bending during small-scale excavation work does not actually meet the purpose, and, nevertheless, in several Korean patents It can be seen that a retaining panel made of steel is used, but these panels have the disadvantage of increasing the weight due to the high specific gravity or density of the material.

In fact, it can be seen that wood earth plate is a more suitable material instead of steel earth plate because the earth pressure acting on it is not large in small-scale construction. It takes a lot of work and requires a lot of manpower, so it has the effect of increasing the construction cost. Since dismantling is not easy, it is buried instead of being collected, which can cause ground subsidence due to corrosion in the future.

Therefore, it is also the reason that many people prefer the steel earth plate instead of the wooden earth plate due to the above.

According to Korean Patent No. 10-1005572 "Simple retaining structure", in installing retaining panels between thumb stakes, piles using H-beams are installed for each place, and a bellows-type sliding panel is installed between these stakes, At both ends of the panel, a guide steel C-beam is included, and the three-layer panel is inserted into the groove on the side of the thumb pile to be installed along with the excavation downward. It has a feature to be installed downwards.

However, this configuration is not easy to handle because the weight of the panel is heavy, and when foreign substances are caught in the overlapping part, it not only interferes with sliding, but also has a fatal defect that sliding itself cannot be made if damage is applied by equipment, etc. It can be said that there is

The disadvantage is that it is very difficult to deal with if there may or may not be enough panels depending on the depth of excavation. In addition, during installation, a fall-type installation method by its own weight can be applied, but when the panel is removed, the above problems are exposed such that it is very difficult to lift it while folding it because the panel is spread deeply.

In addition, in the aforementioned Korean Patent No. 10-1182820, as a self-supporting retaining panel method for temporary facility construction without braces, the steel pipe is spread by a certain width as a substitute for a thumb pile, but another steel pipe is inserted in the steel pipe to extend it, so the thumb It is made to play the role of a pile, and a large-sized steel pipe is applied for rigidity.

The panel is installed on the back side of the steel pipe for thumb piles, and the standard is inserted so that it can be inserted between the steel pipes.

However, this configuration will cause a lot of inconvenience when excavating the steel pipe and building the internal structure, and it will be difficult to type another steel pipe in the steel pipe into the underground. There is a problem that the series of processes supported by the

Therefore, the present invention is devised to solve the above problems, and various pipeline constructions are involved in the formation of medium and large cities and large-scale residential complexes. Since it must be constructed as a line construction of

As much as possible, it is possible to achieve a considerable lateral separation between the thumb piles, to reuse the earth plate as well as to install and dismantle it easily. The purpose of this study is to achieve a temporary retaining structure and a temporary construction method for low-depth simple construction that has the purpose of exhibiting quick construction capability.

In order to achieve the above object and to achieve the purpose of efficiently constructing low-depth retaining construction, the present invention provides

○ Produce a thumb stake,

* Vertically connect H thumb piles and T thumb piles or H thumb piles and CT thumb piles, and attach a steel plate or C-beam with different steel types to the back of the T thumb pile and CT thumb pile at regular intervals. Drilling a hole and installing it in a drilled hole;

○ While excavating, insert the manufactured steel earth plate between the thumb piles,

* Manufacturing of steel earth plate is to achieve a length that can be inserted into the side CT thumb piles,

* Panel 1 formed by combining C-beams and Panel 2 formed by combining C-beams at intervals, respectively, but to attach steel plates to both sides of the panel so that they are combined with bolts;

* Adding movable binding steel to the inner surface of the steel earth plate, and installing a moving device in which the binding rod is fixed to the binding steel and enters the binding pipe;

* When the steel earth plate is erected between the sides of the H thumb pile, the binding steel is drawn out and built in so that it is supported on the inner flange of the H thumb pile;

* When entering between the sides of the T thumb pile, pull the binding steel so that it is connected to the T thumb pile web, and restrain the binding steel and the T thumb pile web on both sides with a filling hole;

* When inserting between the sides of the CT thumb pile, push in the binding steel and pull it out after inserting it to connect to the CT thumb pile web so that it is supported by the inner flange of the CT thumb pile;

○ Install the braces on the thumb stakes,

* A fixture 131 is installed on one side of the thumb stakes (143, 144, 145), and a support 132 is installed on the opposite thumb stakes (143, 144, 145);

* Installing the fixture 131 and the support 132 on the thumb stakes 143, 144, and 145 by changing the direction to the two-stage and adjacent brace facilities,

* The fixture 131 is to install the hinge 135 on the big toe (143, 144, 145) so that it can rotate at any angle up and down;

* As a support facility, a steel pipe of a certain diameter is used as a cast steel pipe, but the joint 137 is welded to another steel pipe with a diameter sufficient to insert a cast steel pipe at the end of either side of the steel pipe, and the connected cast steel pipe is inserted. Fixing it by fixing it with a pin,

* Installing a screw jack 154 that can be compressed to reach the support hole 132 in the opposite direction at the end of the bracing pipe combined as described above,

In another method,

* The vertical sliding steel 162 and the saber 163 are installed at both ends of the top and bottom braces 103, and the connecting bolt 171 and the top and bottom beams 103 that combine them are screw jacks on either side. Or to install the hydraulic jack 161,

* Installing the rollers 165 at the top of the pile heads on both sides of the thumb piles 144 and connecting them with the vertical sliding steel 162 and the wire 166,

* To install the guide river 164 so that they can ascend and descend, and to install the support bolt 168 to prevent it from flowing down;

○ It is characterized in that steel earth plates are inserted into the web between T or CT thumb piles by additional excavation in the same way as above.

According to the present invention,

The first effect of efficient construction by separating the thumb stake from the panel and manufacturing and installing it separately without using the integrated panel and brace used in the existing small-scale retaining method,

The second effect of facilitating the installation of steel earth plates after two-stage excavation by joining H thumb piles and T thumb piles or CT thumb piles when manufacturing thumb piles;

The third effect of reducing the construction cost by composing it so that it can be easily constructed even on narrow roads with frequent traffic such as in downtown areas;

The fourth effect of simplifying installation regardless of the type of thumb pile by adding a telescopic device to the steel earth plate,

A fifth effect of reducing the number of uses by configuring the braces to support only the thumb pegs,

The sixth effect of shortening the air period by fixing the bow for installing the brace to the thumb pile and installing the brace when installing the thumb pile,

The seventh effect that can actively cope with the depth of excavation by configuring the double brace structure to be raised and lowered,

The eighth effect, which consists of a sliding wing type double brace structure, that can shorten the air by integrating the conventional vertical 1 and 2 step braces, and

The 9th effect can be expected in that the separation and combination of retaining materials are free and easy to move, store, assemble, and dismantle.

1 to 3 are views showing an embodiment according to the present invention,
1 is an exemplary view schematically showing a flat surface and a support structure implemented so that retaining and support facilities can be made during low-depth excavation,
- Detail 1a is a drawing showing the structure of the beotimbo in detail
- Detail 1b is the drawing of the inter-beam material meeting
- Detail 1c is a view showing the form in which the brace is seated on the opposing thumb peg support
- Detail 1d is a drawing that implements the function to adjust the vertical angle of the brace
2 is a view showing a state in which a steel earth plate is inserted between the thumb piles;
Figure 3 is a view showing the state of the side showing the arrangement of the steel earth plate
- Detail 3a shows the side where the C-shaped steel of the steel earth plate is bound to both sides of the steel plate.
- Detail 3b is a plan view of the arrangement of the binding steel of the steel earth plate on the CT thumb pile.
- Detail 3c is a plan view of the arrangement of the binding steel of the steel earth plate on the T thumb pile.
- Detail 3d plane showing the type of thumbtack
- Detail 3e is a side view showing the vertical binding of the thumb pegs
4 is a view schematically showing the front of the wing-type sliding double brace structure arranged between the thumb pegs.
- 4(a) is a schematic view of the front of the double brace structure combined
- 4(b) is a schematic view of the front of the double brace structure

Hereinafter, a specific embodiment of the present invention constituting the retaining facility 100 at a low depth will be described in detail with reference to the accompanying FIGS. 1 to 4 .

First, when describing the thumb stakes 143, 144, and 145, which are one of the three essential elements of the retaining facility 100, the thumb stakes 143, 144, and 145 are opposed along the area where the underground structure is installed using a commonly used H-beam. And it is built on a position spaced apart at regular intervals, and the erection operation and process are carried out by adopting a normal one.

Characteristics of the low-depth retaining facility 100 are low excavation depth, narrow width, and temporary rapid construction. It is composed of a steel earth plate 130 that can be easily constructed because of low pressure and rapid construction, and a prefabricated brace 103 or sliding double brace 167 that can support them, and thumb piles 143, 144, 145, and there is no belt strip. is characterized.

Looking at these contents, as shown in <Fig. 1>, first, the thumb piles 143, 144, and 145 are installed at any position on either side or both sides of the temporary facility line, and then the steel earth plate 130 is built in with the internal excavation while prefabricated braces ( 103) or a method of installing a sliding double brace structure 167 to pursue the stability of the retaining system 100 .
Here, the thumb piles 143, 144, and 145 are to have a web height at which the steel earth plate 130 and the binding steel 141 can be erected, and the steel earth plate 130 is a C-shaped steel 133 and both side cover plates 136. While these are mutually bound, a binding steel 141 having an 'L' shape is installed at both end portions, and the movable binding steel 141 is configured to reach the thumb piles (143, 144, 145) web. ,

The prefabricated brace 103 of the round pipe 134 supporting the inner surface of the H thumb pile 144 flange is installed on either side of the temporary retaining facilities on both sides and is a bow-type type connecting with the H thumb pile 144 <Detail 1d> As shown in <Detail 1c>, in which the prefabricated brace 103 of the circular pipe 134 is placed, the 'V It is composed of a 'shape-shaped support sphere 132 and should be installed to cross each other along the direction of progress.

However, as in <Detail 3d>, three types of thumb piles (143, 144, 145) are required depending on the depth of excavation . When doing so, it can be welded or bolted as shown in <Detail 3e>, and thumb piles (143,144) that are vertically joined H thumb piles 144 and T thumb piles 143, or H thumb piles 144 and It is necessary to use each of the thumb stakes 144 and 145 in which the CT thumb stakes 145 are vertically joined .

The reason for doing this is to install the steel earth plate 130 mentioned above into the inside between the flanges of the H thumb piles 144 to support the weight of the steel earth plates by penetrating the web at the end of the H thumb piles 144 and installing them horizontally. In order to reach one seating hole 149 and to reach a predetermined excavation surface, the steel earth plate 130 is inserted into the T thumb pile 143 or the CT thumb pile 145 during additional excavation and mounted on the seating hole 149. This is because the T thumb pile 143 or the CT thumb pile 145 and the steel earth plate 130 may be bound together.

However, the reason for using a combination of the thumb piles 143, 144, and 145 as described above is that when only the H thumb pile 144 is used, the first-stage steel earth plate 130 is erected, and then the second stage steel earth plate 130. First, the first-stage steel earth plate 130 and the second stage steel earth plate 130 must be bundled together, and the problem is that the steel earth plate 130 is vertically bound to make it heavy, and the lower surface is excavated to make the H thumb pile (144) The bar should be slid downwards within the flange, at this time the steel earth plate 130 is twisted and does not go down as it collides with the H thumb pile 144 web, or a sudden fall may cause injury to the operator This is to prevent this because it entails, and because the crane must always be hanging the steel earth plate 130, the aspect of increasing the cost cannot be overlooked.

Therefore, as in <Detail 3d>, the types of thumb stakes 143, 144, and 145 are vertically combined and used, and this is a way to reduce safety and cost.

On the other hand, when the H thumb pile 144 and the T thumb pile 143 or the CT thumb pile 145 are vertically combined, the steel earth plate ( 130) is installed,
The first-stage steel earth plate 130 is mounted between the flanges of the H thumb piles 144 to reach the seating port 149, and the binding steel 141 is moved to the H thumb pile 144 web side. Then, after additional excavation to reach the excavation surface, as shown in <Detail 3c>, the two-stage steel earth plate 130 is inserted inside between the T thumb piles 143 webs, and the binding steel 141 is similarly inserted into the T thumb piles ( 143) After moving to the web side, the reinforcing bar-shaped filling hole 148 tying the T thumb pile 143 and the binding steel 141 is inserted into the binding hole 152, and the T thumb pile 143 to achieve this. is to use a T-beam steel 150, but to have a facility to pre-drill the binding hole 152 in the web,

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Alternatively, as a method of installing the steel earth plate 130 when the H thumb pile 144 and the CT thumb pile 145 are combined,
The first-stage steel earth plate 130 is loaded into the H thumb pile 144 between the flanges to reach the seating port 149 and the binding steel 141 is moved to the H thumb pile 144 web side. Then, after additional excavation to reach the excavation surface, as in <Detail 3b>, the binding steel 141 of the two-stage steel earth plate 130 is pushed inward, and this steel earth plate 130 is inserted into the CT thumb pile 143 ) After entering the inside between the webs, the binding steel 141 is moved to the CT thumb pile 143 web side and placed to be caught on the cover plate 147, which is the inner flange of the CT thumb pile 145, to achieve this. To this end, the covering plate 147 should be installed as a CT thumb pile 145 in a welded state to the T-beam.

On the other hand, the mounting hole 149 installed on the thumb piles (143, 144, 145) uses two thick reinforcing bars as shown in <Detailed 3d>, but on the H thumb pile 144 side, the end web is perforated and the rebar It is used by sandwiching and welding, and the T thumb pile 143 or CT thumb pile 145 is installed at a position that matches the height of the steel earth plate 130. The reason for using such a thick rebar is the weight of the steel earth plate 130. This is because it must be able to support the poles and must not be deformed, and must have a structure that can be smoothly pulled out without receiving the resistance of the soil when the thumb piles 143, 144, 145 are pulled out.

In addition, when the H thumb pile 144 and the T thumb pile 143 or the combination of the H thumb pile 144 and the CT thumb pile 145 are vertically joined, the required length is secured as mentioned above and this If it is to be used continuously, it can be used by welding, but depending on the limitation due to length and other conditions, it may be contacted using bolts as in <Detail 3e>.

When connecting bolts, bolts are pre-welded to the outer flange of the vertical joint at both ends of the thumb piles (144+143, 144+145) forming each combination, and the H thumb pile 144 and the T thumb pile 143 or The two ends of the CT thumb piles 145 are vertically combined, and the spherical top plate 139 that can be joined is applied and fastened with bolts and nuts. Only in this way, difficulties occur when installing the steel earth plate 130 inside the flange. it won't

However, in the case of the T thumb pile 143 or the CT thumb pile 145, there is no inner flange or the width is small, so the weakness of the cross-sectional secondary moment is small. It must be reinforced by welding and fixing a different type of steel plate or a C-shaped steel 133 to the flange, or by welding several small-diameter primary pipes 160 and then inserting and fixing several steel rods 159 into the primary pipe. will be. That way, it can serve as a support for the steel earth plate 130 supporting the earth pressure.

As described above, the steel earth plate 130 according to the depth of excavation can be smoothly constructed.

On the other hand, as shown in <Fig. 2>, the steel earth plate 130 has a C-shaped steel 133 embedded between the cover plates 136 in two rows of both sides, and the cover plate 136 and the C-shaped steel 133 are welded or They are mutually bound with bolts and nuts. C-beams 133 are densely arranged on the “A” steel earth plate that receives a large earth pressure, and the “B” steel earth plates that receive a low earth pressure are arranged with ∑ -shaped steels 133 at regular intervals. It consists of one steel earth plate 130, but the steel earth plate 130 of each of the "A" and "B" is manufactured in a structure in which it is separated . It is desirable to arrange various combinations according to the depth to respond to the earth pressure.

The steel earth plate 130 is built into or inside the flange of the thumb piles (143, 144, 145), but the steel earth plate 130 and the thumb piles (143, 144, 145) must be bound as in <detail 3b> or <detail 3c>,
'L'-shaped movable binding steel 141 that can reach the thumb piles 143, 144, 145 webs is installed at both ends of the steel earth plate 130, and several binding rods 142 on the inner side as a moving device. By welding and fixing the binding tube 146 in the shape of a small-diameter circular tube, which is a movable device, at both ends of the steel earth plate 130, the binding rod 142 is welded and fixed to the inner surface of one side of the binding steel 141. , so that it is placed inside the binding tube 146 .

When the above-mentioned steel earth plate 130 is inserted into the flange of the H thumb pile 144, the binding steel 141 is pushed in, and then pulled out and adhered to the H thumb pile 144 web side to be supported on the flange. It is structured so that there is no gap,
When entering into the T thumb pile 143 web, the binding steel 141 is drawn out and entered, and then the binding steel 141 is brought into close contact with the T thumb pile 143 web to be bound with the filling hole 148,

As seen in <Detail 3d>, when entering into the web of the CT thumb pile 145, which has a relatively small inner flange compared to the outer flange, push in the binding steel 141 and pull it out after inserting it into close contact with the CT thumb pile 145 web. and to be supported on the covering plate 147 .

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On the other hand, when the first stage assembly of the thumb stakes 143, 144, 145 of the construction of the retaining facility 100 as in <Detail 1a> is completed, the prefabricated brace 103 or the sliding double brace structure 167 must be installed,

First, as the prefabricated brace 103, a plurality of circular pipes 134 constituting the prefabricated brace 103 as shown in <Detail 1a> are composed of the fixture 131 and the support 132 on the thumb stakes 143, 144, and 145. As shown in <Detail 1b>, both ends of the prefabricated brace 103 configured by connecting with a joint 134 are thumb piles (143, 144, 145) installed on either side of the fixture 131 and on either side of the support fixture 132 installed on the other side in the opposite direction. ) is concluded with
As shown in <Detail 1d>, the prefabricated brace 103 above has two half-moon-shaped iron pieces on the joint plate to rotate up and down in the fixture 131 on either side of the thumb pile 101 as shown in <Detail 1d>. With the "ㅛ"-shaped steel frame welded in an open state installed on the H thumb pile 144, the circular tube 134 is inserted and the length can be adjusted at a certain angle based on the cleavage device fastened with a pin. It is preferable to prepare different circular tubes 134 to prepare for various width sources.

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The reason for doing this is that it is necessary to vary the width of the structure according to the construction site, and it is not only to facilitate assembly, installation and disassembly during construction, but also to subdivide materials to facilitate assembly, dismantling and management.

On the other hand, as shown in <Detail 1d>, the fixture 131 is formed by installing a "ㅛ"-shaped steel frame welded with two half-moon-shaped iron pieces on the joint plate at 90° and spread at regular intervals on the H thumb pile 144. The circular tube 134 is inserted in the state and it is composed of a cleavage 135 device fastened with a pin. By fixing the corner portion of the mold structure to be downward, a space in which the one-side edge of the prefabricated brace 103 of the circular pipe 134 can be seated is provided on the H thumb pile opposite to the fixture 131,

In addition, the joint 137 as shown in <Detail 1b> is a configuration in which a steel pipe piece with a large diameter is welded to the edge of the circular pipe 134 on either side, and the circular pipe 134 of the same diameter is connected with a pin. is making up

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In this way, the prefabricated brace 103 is arranged to cross alternately left and right along the direction of construction progress, and the fixture 131 and the support 132 and the joint 137 as described above are in harmony with each other. Since the fork support beam 103 is arranged, it is configured to be stable.

However, the facilities of the beotimbo 103 are limited to the H thumb pile 144 and cannot be applied to the T thumb pile 143, which does not have an inner flange of the T thumb pile 143, so the fixture 131 or This is because the facilities of the support 132 cannot be installed.

Therefore, as shown in <Detail 1f>, the T thumb stake 143 must be manufactured and applied to the T brace 151 and the T fixture 155. The T brace 151 is cut by cutting the center of the circular pipe 134 to It is to weld by inserting a steel plate, and inserting the above-mentioned T brace 151 into the T-fixture 155, and fastening and installing it with a cut bolt 158, and the T-fixture 155 is T as shown in <Detail 1g> Two half-moon-shaped iron pieces, smooth steel plates 156, are installed on both sides of the web surface of the end of the T thumb pile 143 in order to form a joint with the brace 151, but the steel plates of the T brace 151 are on both sides of the T fixture 155. By tying the web of the T thumb pile 143 and the smooth steel plates 156 on both sides while leaving a space to be inserted between the smooth steel plates 156 and fastening them with the fixing bolts 157 ,
Since the steel plate of the T brace 151 is sandwiched between the two sliding steel plates 156 formed by the T fixture 155 and fastened with the sliding bolt 158, the T brace 151 is to be able to achieve the sliding T The beotimbo 151 is to be installed in the T fixture 155 .

Next, as the brace 103, a facility that serves to prevent overturning and support the earth pressure between the thumb piles 144 on both sides. Rather, it may be an obstacle to construction, and in consideration of this point, as shown in FIG. 4 , a sliding double brace structure 167 that can produce the effect of a two-stage brace as a first-stage support facility would be preferable.

In order to configure this, the upper and lower vertical sliding steels 162', 162" of the divided H-shaped upper and lower vertical sliding steels (162', 162") are provided with connecting steel 170 on both ends of both ends of the beotimbo 103 composed of upper and lower, respectively, ) is coupled with the inner flange of the lower end of the upper vertical sliding steel 162', and the lower brace 103 forms a sliding double brace structure in a state coupled with the inner flange of the upper side of the lower vertical sliding steel 162',
The guide steel 164 is provided on the outer flange of the upper vertical sliding steel 162' head so that the outer flange of the sliding double brace structure can move vertically up and down on the inner flange of the H thumb pile 144. Therefore, it is prevented from being separated from the H thumb pile 144 ;
This, the upper and lower vertical sliding steel (162', 162") ends and the support beam 103 that form orthogonal to the upper and lower ends of the sliding double brace structure 167, the upper and lower vertical sliding steel (162', 162") It is fixed with the saber reinforcement 163 for displacement control so that the distribution of force is made, and the connecting bolt 171 and the upper and lower brace 103 that connect the upper and lower braces 103 are divided into two at any position. 103) to form a sliding double brace structure 167 coupled with a screw jack or hydraulic jack 161 for connecting the ends.

The sliding double brace structure 167 is a wire between the upper end of the upper vertical sliding steel 162' and the roller 165 installed on the top of the pile heads of both sides of the thumb piles 143 to 145 as in <Fig. 4(a)>. It is connected to (166) so that the wire can raise and lower the sliding double brace structure (167) while supporting the weight of the sliding double brace structure (167).
When the sliding double brace structure 167 ascends and descends, it moves by loosening the screw jack or hydraulic jack 161 of the upper and lower braces 103, and when you want to stop the operation at an arbitrary position, the screw jack or hydraulic jack 161 ) is configured to stop and fix at the desired position when tightened,

Since the support bolt 168 is fastened to the bottom of the guide steel 164 of the roller 165 and the vertical sliding steel 162 installed at the top of the pile head of the thumb piles 143 to 145, the sliding double support structure 167 flows downward. It is designed to act as a stopper so that it does not fall off.
Therefore, on both sides of the inner flange of the thumb piles 143 to 145 on the one side and the opposite side, the support bolts 168 should be formed so that the several holes 169 are spaced apart from each other.

The vertical axis of the double brace structure 167 forms a double structure comprising the top and bottom beams 103, and when the excavation depth is shallow, the top and bottom beams as in <Fig. 4(a)> (103) can be combined and used as a one-stage brace, and if the excavation depth is deep, as in <Fig. 162"), loosen the filler hole 148 fastened with the connecting steel 170 on the upper end, and lower it down using the vertical sliding steel 162 to form a two-stage bracing, with a double bracing 103 of 1 and 2 stages. It is configured so that it can be used

In order to achieve this structure, the vertical sliding steel 162 is divided into an upper vertical sliding steel 162' and a lower vertical sliding steel 162", but a connecting steel 170 made of a C-shaped steel is disposed on both sides of the side of the beam side of the beam web. The upper vertical sliding steel (162') drilled on the lower side The connector 172 is filled with the fixing bolt 157, and the lower vertical sliding steel 162" is configured to enter both sides of the web-side bone,

Configure the configuration of fastening the upper and lower parts of the central brace 103 with the connection bolts 171, fixing the lower nut and loosening the upper nut,

By installing a screw jack or hydraulic jack 161 on each of the upper and lower braces 103, it is configured so that they can be supported independently.

Therefore, when the upper and lower braces 103 are narrowed, the left and right upper and lower vertical sliding steels 162', 162" are in close contact with each other, as in the shape of <Fig. 4(a)>, and the upper support 103 ), the upper vertical sliding steel 162' is fastened from both sides with a fixing bolt 157, and the connecting bolt 171 that binds the upper and lower braces 103 is fixed to the lower braces 103 and is fixed to the upper braces ( 103) is configured to protrude outward,

When it opens, as in the shape of <Fig. 4(b)>, the upper vertical sliding steel 162' and the lower vertical sliding steel 162" are opened, and the connecting bolt 171 configured therein is the upper and lower braces 103. ) is in a state of coupling , and in the position of the lower beam 103, the connector 172 drilled on the upper side is fastened to the lower vertical sliding steel 162 " with the filler hole 148 and on both sides, and the connection bolt 171 is to achieve a state in which the nut is tightened in the upper brace 103.

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On the other hand, the brace 103 in the double brace structure 167 is to be used by joining a plurality of steel materials to be able to actively cope with the excavation width, and the connection with the thumb piles 143 to 145 is <Details. As shown in (a)(b)>, a guide steel 164 configured to vertically move the thumb stakes 143,144,145 at both ends of the upper one side flange of the vertical sliding steel 162' on the sliding double brace structure 167. It is arranged so that it does not come off, and it is configured to be applicable to the T thumb pile 143 or the CT thumb pile 145 as in <Detail (b)>.

As such, the double brace structure 167 is manufactured in a structure that can be extended or narrowed up and down so that it can be actively dealt with depending on the depth of excavation. It constitutes a configuration in which there is no constraint according to the width and depth of the excavation.

100; earth retaining facility 103; support
130; steel earth plate 131; fixture
132; pedestal 133; C-beam
134; round tube 135; Easter
136; cover plate 137; joint
138; L-beam and plate 139; plate
140; pedestal 141; cohesive steel
142; binding rod 143; T thumbs up
144; H thumbtack 145; CT thumb stakes
146; binding tube 147; cover plate
148; Filling Gum 149; seat
150; T-beam 151; T support
152; binding ball 153; low peak
154; screw jack 155; T fixture
156; lubricated steel plate 157; fixing bolt
158; bow bolt 159; steel rod
160; jurisdiction 161; screw jack or hydraulic jack
162; vertical sliding steel 162'; vertical sliding steel
162"; Bottom vertical sliding steel 163; Saber steel
164; guide steel 165; Roller
166; wire 167; double brace structure
168; support bolt 169; hole
170; connecting steel 171; connecting bolt
172; connector

Claims (22)

In the simple construction of the low-depth retaining facility 100 characterized by low excavation depth, narrow width, small earth pressure, and temporary rapid construction,
The C-beam steel 133 and both side cover plates 136 are mutually bound, forming an 'L' shape, and the steel earth plate 130 composed of movable binding steel 141 installed at both ends of the steel earth plate 130 H The inner flange is relatively small compared to the H thumb piles 144 made of a section steel and the T-shaped T thumb piles 143, which are vertically joined together, or the H thumb piles 144 and the outer flange. Each of the thumb stakes 144 and 145 that are vertically joined to the CT thumb stakes 145, which are being used, are loaded into the inside between the flanges;
A prefabricated brace 103 consisting of a combination joint of a plurality of circular pipes 134 that can be attached to and mounted on the thumb stakes 143, 144, 145, or a sliding double brace structure 167 consisting of a combination joint of an H-shaped steel beam 103. Temporary retaining structure for low-depth simple construction, characterized by
delete delete delete delete delete delete The method of claim 1,
Since the steel earth plate 130 is to be bound to the thumb piles 143, 144, and 145, a movable binding steel 141 of an 'L' shape is installed at both ends of the steel earth plate 130,
and the movable binding steel 141 can reach the thumb pegs (143, 144, 145) web ;
As a moving device, a small-diameter circular tube-shaped binding tube 146, which is a device in which several binding rods 142 can move on the inner surface, is placed and fixed to both ends of the steel earth plate 130 by welding;
By welding and fixing the binding rod 142 to the inner surface of one side of the binding steel 141, it enters into the binding pipe 146; The steel earth plate 130 of the configuration,
A C-shaped steel 133 is embedded between the cover plates 136 in two rows of both sides, and the cover plate 136 and the C-shaped steel 133 are mutually bound by welding or bolts and nuts,
C-shaped steel 133 is closely arranged on the "A" steel earth plate 130 that receives a large earth pressure;
The "B" steel earth plate 130 that receives less earth pressure consists of arranging the C-shaped steel 133 at regular intervals, but the steel earth plate 130 of "A" and "B" is separated from each other . Temporary retaining structure for low-depth simple construction, characterized by
The method of claim 1,
The prefabricated brace 103 is a fixture 131 installed on either side of the H thumb pile 144 at both ends of the beotimbo 103 configured by connecting a plurality of circular pipes with a joint 137, and on either side opposite to the other side. It is fastened to the installed base 132;
The fixture 131 is a circular pipe 134 in a state in which the "ㅛ"-shaped steel frame welded with two half-moon-shaped iron pieces on the joint plate at 90° and spread at regular intervals is installed on the H thumb pile 144. consists of a bow 135 that is fitted and fastened with a pin;
The fulcrum 132 rotates the L-shaped steel in a 'V' shape by 90 ° to fix the corner portion of the L-shaped structure downward to provide a space in which the prefabricated brace 103 of the round tube 134 can be seated on one side of the fixture. (131) and installed on the H thumb pile opposite;
The joint 137 is configured to weld a large-diameter steel pipe piece to the edge of the circular pipe 134 on either side, and fasten the circular pipe 134 of the same diameter with a pin in a jointed state;
The prefabricated brace 103 is arranged to cross alternately left and right along the progress direction of the construction, and can be rotated up and down in the fixture 131 on either side of the thumb stake 101, Two half-moon-shaped iron pieces were placed on the joint plate at 90° and a “ㅛ”-shaped steel frame welded at regular intervals was installed on the H thumb pile 144. Temporary retaining structure for low-depth simple construction, characterized in that it can be adjusted at a certain angle around the bow section 135 device
delete delete The method of claim 1,
To the T thumb pile 143, the T brace 151 and the T fixture 155 should be manufactured and applied.
The T brace 151 is to cut the center of the circular pipe 134 and insert the steel plate and weld it , and the T fixture 155 is the T thumb pile 143 to the end of the web surface to form a joint with the T brace 151. Two half-moon shaped steel plates 156 are installed on both sides, but the T thumb piles 143 in a state where the steel plates of the T braces 151 are sandwiched between the T fixtures 155 and the sliding steel plates 156 on both sides. ) of the web and the smooth steel plates 156 on both sides and fastening them with a fixing bolt 157 ,
Since the steel plate of the T brace 151 is sandwiched between the two sliding steel plates 156 formed by the T fixture 155 and fastened with the sliding bolt 158, the T brace 151 can achieve the sliding Retaining temporary structure for low-depth simple construction characterized by ;
The method of claim 1,
In the retaining temporary structure forming a sliding double support structure 167 that meets a plurality of H steel materials and is fastened with bolts and nuts,
The upper and lower vertical sliding steels 162', 162" of the divided H-shaped upper and lower vertical sliding steels (162', 162") are provided with connecting steel 170 respectively on both ends of the beotimbeam 103 composed of the upper and lower ends, Sliding steel 162' coupled with the inner flange of the lower end, the lower beotimbo 103 constitutes a sliding double brace structure in a state coupled with the inner flange of the lower vertical sliding steel 162' ;
The guide steel 164 is provided on the outer flange of the upper vertical sliding steel 162' head so that the outer flange of the sliding double brace structure can move vertically up and down on the inner flange of the H thumb pile 144. Therefore, it is prevented from being separated from the H thumb pile 144 ;
This, the upper and lower vertical sliding steel (162', 162") ends and the support beam 103 that form orthogonal to the upper and lower ends of the sliding double brace structure 167, the upper and lower vertical sliding steel (162', 162") It is fixed with yarn reinforcement (163) for displacement control;
A configuration for coupling with a screw jack or hydraulic jack 161 that connects the ends of the connecting bolts 171 for coupling the upper and lower beotimbo 103 and the upper and lower beotimbo 103 to the ends of both sides of the beotimbo 103 divided into two at any position Retaining temporary structure for low-depth simple construction, characterized in that
14. The method of claim 13,
The sliding double brace structure 167 is
While supporting the weight of the sliding double brace structure 167 by connecting the upper ends of the roller 165 and the upper vertical sliding steel 162 ′ installed on the top of the pile heads of both sides of the thumb piles 143 to 145 with a wire 166 . It is configured to raise and lower the sliding double brace structure 167 ;
When the sliding double brace structure 167 ascends and descends, it moves by loosening the screw jack or hydraulic jack 161 of the upper and lower braces 103, and when you want to stop the operation at an arbitrary position, the screw jack or hydraulic jack 161 ) to make it stop and fix at the desired position;
Since the support bolt 168 is fastened to the lower end of the guide steel 164 of the thumb piles (143-145) and the upper/vertical sliding steel 162 with the roller 165 installed on the top of the pile head, the sliding double brace structure 167 moves downward. to act as a stopper to prevent it from flowing down ;
In order to fasten the support bolt 168, a number of holes 169 are formed at regular intervals so that the support bolt 168 can be fitted on both sides of the inner flange of the thumb pegs 143 to 145 on one side and the opposite side. Temporary retaining structure for low-depth simple construction, characterized by having
15. The method of claim 14,
The vertical axis of the double brace structure 167 is
It has a double structure consisting of upper and lower beams 103, and is manufactured in a structure that can be extended or narrowed upwards and downwards so that it can be actively dealt with according to the depth of excavation;
When the excavation depth is shallow, the upper and lower braces 103 can be combined and used as one-stage braces;
If the excavation depth is deep, loosen the filling hole 148 fastened with the connecting steel 170 at the top of the lower vertical sliding steel 162" fixed with the lower brace 103 among the upper and lower braces 103, and lower Temporary retaining structure for low-depth simple construction characterized in that;
14. The method of claim 13,
The double brace structure 167 divides the vertical sliding steel 162 into an upper vertical sliding steel 162' and a lower vertical sliding steel 162", and arranges a connecting steel 170 made of a C-shaped steel on both sides of the web side trough do;
The upper vertical sliding steel 162' is filled with the fixing bolt 157 in the connector 172 drilled on the lower side, and the lower vertical sliding steel 162" is configured to enter both sides of the web-side bone;
Doedoe forming a configuration for fastening the upper and lower parts of the central brace 103 with the connection bolts 171, fixing the lower nut and loosening the upper nut;
Retaining temporary structure for low-depth simple construction, characterized in that by installing screw jacks or hydraulic jacks 161 on each of the upper and lower braces 103, each can be independently supported;
16. The method of claim 15,
Upper and lower braces (103)
When it is narrowed, the upper and lower vertical sliding steels 162', 162" of the left and right are in close contact with each other, and in the upper brace 103, the upper vertical sliding steel 162' and the upper vertical sliding steel 162' are fastened on both sides with the fixing bolts 157. There is, the connection bolt 171 for tying the upper and lower beotimbo is fixed to the lower beotimbo 103 and has a configuration that protrudes to the outside of the upper beotimbo 103;
When opened, the upper vertical sliding steel 162' and the lower vertical sliding steel 162" are opened, and the connecting bolt 171 configured therein is in a state that serves as a bracing of the upper and lower braces 103, and the lower In the position of the brace 103, the connector 172 drilled on the upper side is fastened with the filling hole 148 and the lower vertical sliding steel 162 " on both sides, and the connection bolt 171 is the nut in the upper brace 103. Retaining temporary structure for low-depth simple construction, characterized in that it achieves a joined state
delete As a construction method in the low-depth earth retaining facility 100,
Step 1: First constructing the thumb piles 143, 144, and 145 in which the H thumb pile 144 and the T thumb pile 143 or the H thumb pile 144 and the CT thumb pile 145 are combined;
Step 2: building or inserting the steel earth plate 130 together with internal excavation between the combined thumb piles (143, 144, 145) according to the depth of excavation;
Step 3: According to the depth of excavation and the width of the excavation, combining and supporting the circular pipe 134, which is the brace 103 or the T brace 151, or supporting it as a sliding double brace structure 167; In configuring as ,

Step 1: In constructing the thumb pile,
① joining the H thumb pile 144 and the T thumb pile 143 or the H thumb pile 144 and the CT thumb pile 145;
② On the back side of the T thumb pile 143 and the CT thumb pile 145, a steel plate of a different steel type or a C-shaped steel 133 is welded and fixed, or a plurality of small diameter elementary pipes 160 are welded and then the elementary pipe 160 ) is manufactured by inserting a plurality of steel rods 159 into and fixing them;
③ Installing the jointed thumb stakes (143, 144, 145) in the drilling hole by drilling auger at regular intervals; and,

Step 2: In the step of building the steel earth plate 130 between the thumb piles 143, 144, and 145 with internal excavation,
① When the steel earth plate 130 is inserted between the sides of the H thumb pile 144, the binding steel 141 is pushed in the center direction of the steel earth plate 130, and the steel earth plate 130 is placed on both sides of the thumb pile 143, 144, 145 web. After entering into the inside, withdrawing the binding steel 141 in the web direction so as to be supported on the inner flange of the H thumb pile 144; And,
② When inserting between the sides of the T thumb pile 143, connect the binding steel 141 to the T thumb pile 143 web, and fill the both sides of the binding steel 141 and the T thumb pile 143 web with the filling hole 148. confinement; and
③ When inserting the steel earth plate 130 between the sides of the CT thumb pile 145, push the binding steel 141 toward the center of the steel earth plate 130, and insert the steel earth plate 130 into the web of both thumb piles 143, 144, 145. After that, withdrawing the binding steel 141 in the web direction, closely contacting the CT thumb pile 145 web, and supporting the CT thumb pile 145 inner flange, the covering plate 147;

Step 3: In the step of installing the holding facilities (134, 167) on the thumb piles (143, 144, 145) together with the installation of the steel earth plate 130,
1. The installation of the brace 103 of the round tube 134 is:
① A step of installing a fixture 131 on one side of the thumb stakes (143, 144, 145) of the retaining facility constructed on both sides, and installing a support ball 132 on the opposite thumb stakes (143, 144, 145); and;
② The fixing part 131 and the supporting part 132 are installed on the thumb piles (143, 144, 145) by changing the left and right directions as they are installed in the longitudinal direction at the second stage and the neighboring braces;
③ The step of installing the hinge 135 to the thumb pegs (143, 144, 145) so that the fixture 131 can rotate at various angles up and down; and,
④ A steel pipe is used as the main material for the support facility, but the joint 137 is formed by welding another steel pipe with a diameter sufficient to insert the other side steel pipe at the end of one side of the plurality of steel pipes, and inserting the other steel pipe to be connected. Fixing with pins; and
⑤ The step of installing a screw jack 154 that can be crimped by being seated on the support hole 132 in the opposite direction at the end of the combined bracing steel pipe using the joint 137;

2. The installation of the brace 103 of the double brace structure 167 is:
① The vertical sliding steel 162 and the saber 163 are installed at both ends of the vertical sliding steel 162 and the saber 163, and the connecting bolt 171 that connects the vertical sliding steel 162 and the saber 163 is Installing a screw jack or hydraulic jack 161 that connects the ends of the two-divided bibutimbo 103 at any position of the upper and lower beotimbo 103; and
② Installing the rollers 165 on both sides of the thumb piles 144 at the top of the pile heads and installing them to be bound with the vertical sliding steel 162 and the wire 166; and;
③ The guide steel 164 is installed so that the upper and lower braces 103 can ascend and descend, and the screw jacks or hydraulic jacks 161 installed in the upper and lower braces 103 are loosened or tightened at any position. It is possible to move and stop the furnace, and it is made as a process of installing the support bolts 168 to prevent the upper and lower braces 103 from flowing down.
20. The method of claim 19,
The steel earth plate 130 embeds the C-shaped steel 133, and the C-beam steel 133 is connected to each other by attaching the cover plates 136 to both front and back sides;
In the portion ("A") receiving a large earth pressure, the C-shaped steel 133 is closely arranged, and in the portion receiving a small earth pressure ("B"), the steel earth plate 130 is arranged at intervals, but with the "A" and "B" part is manufactured as a separate structure;
Retaining installation method for low-depth simple construction, characterized in that it is arranged in combination according to the depth of excavation during construction to respond to earth pressure; delete delete

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