KR101216722B1 - Prestressed assembly block structure applying external PS force to strongly connected assembly block and construction method thereof - Google Patents

Abstract

The present invention is to vary the size of the block according to the site conditions when installing the pre-stressed prefabricated block structure for the installation of waterways, communication paths and underground sidewalks, and the structure by connecting the various manufactured blocks to the rigid connection After installation, the wall or arch ribs are applied with jacks to allow external forces to be introduced into the entire structure by the deformation introduced throughout the structure, or the inner part of the upper slab and the lower slab block are connected by PS steel wire to fix the tension. The present invention relates to a method for constructing a prestress-prefabricated block box structure in which prestresses are introduced.

Description

Prestressed assembly block structure applying external PS force to strongly connected assembly block and construction method

The present invention, when installing the structure for installing the waterway, cavities and underground sidewalks, etc., by installing the prefabricated by varying the size of the block according to the size of the span to install the member elements of the structure assembled in the field, The assembled block is rigidly connected with the reinforced steel connection part and the member fastening device to form a stable and safe structure, and the prestress is applied to the structure by applying an external PS force to the inside or outside of the wall block of the prefabricated structure. Prestressed prefabricated block that introduces prestress by introducing external PS force to rigidly connected prefabricated block to make the span section long, to make long span to be applied, and to diversify the structure to be applied while reducing weight. It relates to a construction method of the structure.

Conventionally, in order to install a structure such as a communication channel, a passage box, a drainage channel, etc., a plurality of box structures precast with a shear surface or a precast box structure precast with vertically separated sections are installed in succession, or reinforcing bars and concrete are poured. The box was installed on site.

However, assembling and constructing the pre-fabricated unit box as described above is applicable only to a short span of a small span, so the applicability is deteriorated due to the limitation of the application span length, and the weight of the manufacturing box is heavy, which limits the transportation or mounting, thus increasing the construction cost. There is a problem.

If the span is large, if two or more box structures are used due to the above-mentioned problems, the cross section becomes more massive, and it is difficult to manufacture due to the limitation of handling equipment during transportation or manufacturing. Insufficient rigid connection device in star connection part is not applied by unstable structure.

Therefore, the construction of the above structure is applied by on-site casting method such as reinforcing steel reinforcement and concrete pouring at the site, which makes the construction work complicated and requires a lot of construction time and material input. When more than two box structures are used, dirt and logging fell during flooding due to the central wall, which reduces the passage surface, causing problems such as flooding of the banks and loss of roads.

In addition, conventionally used as an arch structure instead of the box structure as described above, but the structural features of the arch structure has a feature that the axial force is larger than the box, the bending moment is reduced, but the span is large and semi-circle Except in the case of the non-arch structure, the bending moment is increased and the cross section is increased, and there is a problem in that the application span is limited due to the pulling or the limit of the conveying equipment.

The present invention, in order to improve the above problems, by dividing the box structure into various sizes to reduce the weight, and secured by the ramen or arch structure by rigidly connecting the produced block using the member fastening device and the reinforced steel fastening connection At intervals where the upper and wall blocks meet both sides of the lower slab block, install an external PS force introduction device within the gap, and operate the jack of the external PS force introduction device to act on the wall block. In addition, the wall block is deformed, and at the same time, the upper slab block and the arch rib block also bring the deformation so that the prestress is introduced into the entire structure, thereby canceling the deformation caused by the external force acting on the structure and at the same time reducing the weight of the cross section. will be.

The present invention is produced by varying the size of the block according to the size of the structure span, and after installing the structure in a rigid connection state using the reinforcing bar connecting member and the member fastening device, both ends of the lower slab block A gap is formed in a portion where the wall block or the arch rib block is installed on an upper portion of the wall block, and an external PS force introduction device is installed within the gap to apply an external PS force to the wall block or the arch rib block to act as a wall block or arch rib. At the same time, the upper slab block or the arch rib block connected to the wall block or the arch rib block is deformed while the block is deformed, so that the prestress is introduced as a whole. .

 The invention is produced by varying the size of the block constituting the structure according to the conditions of the site, the steel block connection and the arch is installed on the lower slab block after assembling the rigid connection using the reinforcing bar and the member tightening device The external PS force is applied to the rib block so that the prestress is introduced throughout the structure to offset the deformation of the structure due to the external force acting, and to reduce the cross-section of the block, thereby ensuring the safety of the structure and at the same time making the block lightweight. And it is an economical construction method to reduce the construction cost to construct it.

1 is a view showing that the upper slab and the wall of the present invention is integrally manufactured and assembled into a large block of the lower slab, and a prestress prefabricated box structure is installed by introducing a prestress.
Figure 2 shows the installation of the prestressed prefabricated box structure having a large span by the rigid connection of each block assembled with the member fastening device while manufacturing and assembling the upper slab, the wall and the lower slab of the present invention as a small block; drawing.
Figure 3 is the upper slab, the wall, the lower slab and the center wall and the lower slab center wall installation block of the present invention while manufacturing and assembling the small blocks of each block assembled and rigidly connected to the member tightening device, the prestress is introduced two span Figure showing the installation of the pre-stressed prefabricated box structure.
4 is a view showing that the arch ribs of the present invention are manufactured and assembled in large blocks, and prestresses are installed to install prestressed prefabricated arch structures with short spans.
5 is a view showing that the pre-stressed prefabricated arch structure with a large span is installed by rigidly connecting each block assembled while fabricating and assembling the arch rib of the present invention into a small block with a member fastening device.
Figure 6 (a) (b) is an inner and outer end blocks installed on the wall block or arch rib block and the lower slab end block to introduce external PS force to the wall block or arch rib block of the prestressed prefabricated box structure or arch structure of the present invention. Figure showing the introduction of prestress by installing an external PS force introduction device in the inner space.
Figure 7 (a) (b) is a view showing a reinforcing steel connection device for fastening the lower slab block and the upper slab block of the pre-stressed prefabricated box structure or arch structure of the present invention.
Figure 8 (a) (b) is a view showing in detail the member tightening device for mutually rigidly connecting the arch rib block and the wall block of the pre-stressed prefabricated box structure or arch structure of the present invention.

Hereinafter, the configuration and operation of the present invention by the accompanying drawings as follows.

1 is a view showing the fabrication and assembly of the lower slab as a large block while the upper slab and the wall of the present invention are integrated, and the prestress is introduced to install a prestressed prefabricated box structure with a short span.

Figure 2 shows the installation of the prestressed prefabricated box structure having a large span by the rigid connection of each block assembled with the member fastening device while manufacturing and assembling the upper slab, the wall and the lower slab of the present invention as a small block; Drawing,

Figure 3 is the upper slab, the central wall, the lower slab center wall installation block and the lower slab while manufacturing and assembling the small slab each block is assembled and rigidly connected to the member tightening device, the prestress is introduced to the prestress more than two spans The drawing shows the prefabricated box structure installed.

4 is a view showing that the arch ribs of the present invention are manufactured and assembled in large blocks, and prestresses are installed to install prestressed prefabricated arch structures with short spans.

FIG. 5 is a view showing that each block assembled while fabricating and assembling a small block of the arch rib of the present invention is rigidly connected with a member tightening device, and a prestress prefabricated arch structure is installed by introducing a prestress.

Figure 6 (a) (b) is external to the gap in the inner and outer end blocks installed in the wall block or arch rib block and the lower slab end block to introduce the prestress to the wall or arch rib of the pre-stressed box structure or arch structure of the present invention The drawing shows the introduction of prestress by installing PS force introduction device.

Figure 7 (a) (b) is a view showing a reinforcing steel connection device for fastening the lower slab block and the upper slab block of the pre-stressed prefabricated box structure or arch structure of the present invention,

Figure 8 (a) (b) is a view showing in detail the member fastening device for mutually connecting the pre-stress prefabricated box structure or arch rib block and the wall of the arch structure of the present invention.

The present invention is to be applied when assembling and installing the box structure 10 or the arch structure 30 for installing a waterway, a passage box, a communication, an electric power outlet and an underground driveway.

By making the members constituting the structure (10, 30) in a small block or a large block according to the size of the span length, the structure by rigidly connecting each block in the field with the reinforcing steel connection device 50 and the member fastening device (60) Assemble and install (10).

After completing the structure work as described above, the wall block 12 or the arch rib block (31, 34) of the installed box or arch structure (10, 30) the inner and outer end blocks installed on the upper slab block (21) ( A gap 15 is provided between the inner and outer end blocks 16 and 17 and the wall block or the arch rib block 12, 31, and 34, and the external PS force is introduced within the gap. Install the device 40.

Another external PS force introduction device for introducing prestress to the upper and lower slabs and walls includes a method of introducing prestress by installing PS steel wires at the inner end block of the upper slab and the outer end block of the lower slab.

An upper PS slab is connected to the wall block and the arch rib block by applying the external PS force 18 to the wall block and the arch rib block by using the external PS force introduction device 40. The block 13 and the arch rib blocks 31, 34, and 35 at the upper side are also deformed, so that the prestress is introduced by applying an external PS force to the prefabricated block that is rigidly connected so that the prestress is introduced throughout the structure. The present invention relates to a construction method of a prestressed prefabricated block structure (10) in which a PS steel wire is installed on a slab to fix a tension and further introduce a prestress.

Hereinafter, the structural configuration and construction method of the prestressed prefabricated block structure 10 of the present invention will be described in detail with reference to the accompanying drawings.

1 is a prestressed prefabricated block structure 10 according to the present invention.

The lower slab block 11 is precast or manufactured in the field while the lower slab block 11 is made to be somewhat larger than the wall thickness that can be prestressed.

The inner and outer end blocks 16 and 17 are installed at the upper ends of both ends of the lower slab block 11, but the wall blocks are installed and installed so as to have a range such that an interval 15 which is a free space is installed.

The interval 15 is a space for the installation of the external PS force introduction device 40 later.

The upper slab block 13 integrated with the wall block 12 is manufactured by precast.

The construction method of the upper and lower slab blocks and wall blocks manufactured as described above are as follows.

First, the lower slab block 11 is installed in the field, and the lower end portion 36 of the wall block is installed in the inner and outer end blocks 16 and 17 of the lower slab block so that a constant interval 15 is formed.

An external PS force introduction device 40 is installed in the gap 15.

When the external PS force (P) 18 is applied to the wall block 12 by using the external PS force introduction device 40 installed at both sides, the wall block 12 is a dotted line prestressed strain line 25 of the design management value. When moving by), the external PS force is transmitted to the upper slab block 13 installed integrally with the wall block 12 so that the upper slab block 13 also introduces the camber as much as the prestressed strain line of the dotted line. Complete the installation of the pre-stressed prefabricated box structure 20 to be introduced.

The direction of the external PS force, which is the acting direction of the camber deformation acting on the wall block 12, may be offset from the outside of the wall block 12 in the direction that can be canceled according to the bending moment shape caused by the external force, or vice versa. You can also go outside.

Figure 2 is a prestressed prefabricated block structure 10 of the present invention corresponds to the case of a large box width source, the member constituting the structure is the lower slab end block 21, the lower slab center block 22, the wall block ( 12) and the upper slab block (13), respectively, made of small blocks, and the assembled block is mounted in a prefabricated, then the lower slab end block and the lower slab center block (21, 22) is reinforced steel connection device 50 The upper slab block 13 and the wall block 12 is tightly connected to the member fastening device 60 to install the prestressed box structure 20.

While the lower slab end block 21 is made of precast and made somewhat larger than the thickness of the wall that can be prestressed outside, the upper and lower end blocks 16 and 17 are installed to have a range, but the inner and outer end blocks later. The wall blocks 12 are installed in the 16 and 17 spaces, and spaces 15 which are free spaces are installed.

The interval 15 is a space for the installation of the external PS force introduction device 40 later.

The method of assembling and installing the upper and lower slab blocks and wall blocks in the field is as follows.

First, the lower slab end block 21 is installed on both sides in the field, and the lower slab center block 22 is installed between the lower slab end blocks installed on both sides, and at the same time, the steel slab connection device 50 is used to strengthen each other. To be connected.

The wall block 12 is installed in the space of the inner and outer end blocks 16 and 17 installed on the lower slab end blocks 21 installed at both ends, and the upper slab block is disposed on the wall blocks 12. 13) while the wall block 12 and the upper slab block 13 is rigidly connected to the member fastening device 60 to install the prestressed prefabricated block structure (10).

The PS steel wire 23 is installed in the sheath 14 installed in the upper slab block 13, and is tensioned to fix the prestress in the anchorage 24 provided at the end of the internal part 37 of the upper slab block 13. Introduce.

An external PS force introduction device 40 is installed in the gap 15 formed between the wall block 12 and the inner and outer end blocks 16 and 17 of the structure installed as described above.

When the external PS force (P) 18 is applied to the wall block 12 using the installed external PS force introduction device 40, the wall block 12 is as much as the prestress line 25 of the dotted line of the design management value. When moved, the external PS force is transmitted to the upper slab block 13 installed integrally with the wall block 12 so that the upper slab block 13 also introduces the camber as much as the prestressed strain line of the dotted line, so that the prestress is introduced throughout the structure. The installation of one prestressed prefabricated box structure 20 is completed.

The direction of the external PS force, which is the acting direction of the camber deformation acting on the wall block 12, may be offset from the outside of the wall block 12 in the direction that can be canceled according to the bending moment shape caused by the external force, or vice versa. You can also go outside.

3 is a case in which the prestressed prefabricated block structure 10 of the present invention has a long span, such as an underground roadway, and is applied to a case in which the structure of FIG. .

The members constituting the structure are wall blocks 12, lower slab end blocks 21, lower slab center blocks 22, lower slab center wall installation blocks 26, and upper slab blocks 13, respectively. Produced by

The lower slab end block 21 and the lower slab central wall installation block 26 are made slightly larger than the thickness of the wall block that can be prestressed while being manufactured by precast, but the outer end and the lower slab of the upper and lower slab end blocks. In the center of the central wall installation block, it is possible to install the wall blocks and the central wall blocks (12, 27).

When the upper slab block 13 is manufactured, the sheath 14 may be installed to install the PS steel wire 23 in the cross section so that the PS steel wire 23 may be continuously installed in the continuous upper slab block 13. The fixing unit 24 is installed at the end of the upper slab inner portion 37 protruding a predetermined length outwardly of the upper slab block 13, and the fixing unit 24 is installed on the upper portion of the inner slab 37. The sheath 14 penetrates vertically.

The inner part 37 of the upper slab block 13 is installed, the sheath 14 is installed through the upper part of the inner part 37, and the fixing unit 24 is installed on the upper part of the lower slab end block. T-shaped block-out cross-section 29 is provided on the outer end block 17 provided on the upper portion of the 21, so that the PS steel wire 23 on the outside of the wall block 12, the inner portion 37 and the outer end block. Install and fix in (17), and tension the PS steel wire so that it can be prestressed from the outside.

The method of assembling and installing the upper and lower slab blocks and wall blocks in the field is as follows.

First, the lower slab end block 21 is installed on both sides at the site, and the lower slab center wall installation block 26 is installed at the center, and the lower slab end block 21 and the lower slab center wall installation block are installed at both sides. While installing the lower slab central block 22 between the 26 and at the same time to be connected to each other by using the steel reinforcing connection device 50.

The wall blocks and the central wall blocks 12 and 27 are installed on the lower slab end block 21 and the lower slab center wall installation block 26 provided at both ends.

The upper slab block 13 is mounted on the upper wall blocks and the central wall blocks 12 and 27, but the upper slab blocks 13 are installed adjacent to the upper wall blocks 27.

While the wall block and the central wall block (12, 27) and the upper slab block 13 is rigidly connected to the member tightening device 60, at the same time with the lower slab end block 21 and the lower slab center wall installation block 26 The wall block and the central wall blocks 12 and 27 are rigidly connected to each other by the member tightening device 60, and the upper slab block 13 installed adjacently on the upper part of the central wall block 27 is reinforced by the steel fastening device 50. Install the pre-stressed prefabricated box structure (10) by using a rigid connection.

The PS steel wire 23 is continuously installed in the upper slab block 13 and is tensioned, and the PS steel wire is tensioned in the fixing unit 24 installed in the internal part 37 to introduce prestress into the upper slab block 13.

PS steel wire 23 in the T-shaped block out end surface 29 formed in the fixing unit 24 of the inner section 37 of the upper slab block 13 and the outer end block 17 of the lower slab end block 21. Install and settle down.

As described above, when the PS steel wires installed in the outer end blocks of the internal parts and the lower slab and the PS steel wires installed in the upper slab are respectively tensioned, the wall block 12 moves by the deformation line 25 of the dotted line of the design management value. External PS force is transmitted to the upper slab block 13 installed integrally with the wall block 12 so that the upper slab block 13 also introduces a camber by the deformation line of the dotted line so that prestress is introduced throughout the structure.

The installation of the pre-stressed prefabricated box structure 20 in which the pre-stress is introduced into the structure as a whole by placing concrete in the T-shaped block-out cross section.

In addition, in the case where the PS steel wire is continuously installed in the upper slab block as described above, when the span is larger or the load is large, the PS steel wire 23 is disposed in the upper slab block 13 in a bending moment shape and is tensioned. Next, it is fixed to the fixing unit 24 provided at the end of the inner part of the upper slab block to introduce prestress to cancel the stress caused by external force.

Depending on the application span and working load, prestressing may be pre-stressed only in the PS steel wires installed in the upper slab block, or the prestressing may be used in both the PS steel wires in the upper slab block and the PS steel wires installed in the inner and outer end blocks.

FIG. 4 is applied to the prestressed prefabricated block arch structure 30 of the present invention when the arch span is small.

As the block constituting the structure, while the lower slab block 11 is made of precast or cast in the field, the thickness of the lower slab block 11 is somewhat larger than the thickness of the arch rib block so that external pre-dressing on both ends. In addition, the inner and outer end blocks 16 and 17 are formed to have a space on the upper end of the lower slab block, and the lower end portion 36 of the arch rib is installed in the space and the clearance gap 15.

The space 15 is a space for installing the external PS force introduction device 40 later.

In addition, the arch rib block 31 is manufactured in a batch block precast with a front end surface and installed in the inner and outer end blocks 16 and 17 of the lower slab block 11.

The method of constructing the lower slab block 11 and the arch rib block 31 manufactured as described above is as follows.

First, the lower slab block 11 is mounted on the site, and the lower end portion 36 of the arch rib block 31 is installed in the inner and outer end blocks 16 and 17 of the lower slab block 11, and a predetermined interval 15 is provided. To form.

An external PS force introduction device 40 is installed in the gap 15.

When the external PS force (P) 18 is applied to the lower end portion 36 of the arch rib block by using the external PS force introduction device 40 installed on both sides, the arch rib block 31 is prestressed by dotted lines of design management values. When moving by the deformation line 25, the installation of the prestressed prefabricated arch structure 30, which is a prestressed prefabricated block structure 10, is introduced so that the camber is introduced as much as the prestressed line of the dotted line, so that the prestress is introduced throughout the structure.

The direction of the external PS force, which is an action direction of the camber deformation acting on the arch rib block 31, may be offset from the outside of the lower end portion 36 of the arch rib block in a direction that can be canceled according to the bending moment shape caused by the external force. On the contrary, it can also be made from inside to outside.

5 is a pre-stressed prefabricated block arch structure 30 of the present invention, which is applied when the arch rib span is large.

The block constituting the structure is made of a small block of the lower slab end block 21, the lower slab center block 22, the lower arch rib block 34 and the central arch rib block 35, respectively.

Inner and outer end blocks (16, 17) are formed with a space on the upper end of the lower slab end block 21, after which the lower end 36 of the arch rib block 34 is installed in the space and the clearance gap (15) Install so that

The space 15 is a space for installing the external PS force introduction device 40 later.

The lower slab end block 21 is installed on both sides, and the lower slab end block 21 and the steel slab connection device 50 installed adjacent to each other while the lower slab center block 22 is installed in the center and are connected in the field. Install the lower slab center block.

The lower arch rib block 34 is installed in the space of the inner and outer end blocks 16 and 17 of the lower slab end block 21 installed on both sides, and the central arch rib block 34 is disposed on the upper side of the lower arch rib block 34 on both sides. (35) is installed, and the central arch rib block 35 and the lower arch rib block 34 is rigidly connected to the member rigid steel 60 to form an arch.

When the operation is completed, the lower end portion 36 of the arch rib block is installed in the space of the inner and outer end blocks 16 and 17 installed on the upper portion of the lower slab end block 21 and the outside in the space 15 in which the free space is installed. Install the PS force introduction device (40).

When the external PS force (P) 18 is applied to the lower end portion 36 of the arch rib block by using the external PS force introduction device 40 installed on both sides, the arch rib block 31 is prestressed by dotted lines of design management values. When moving by the deformation line 25, the installation of the prestressed prefabricated arch structure 30, which is a prestressed prefabricated block structure 10, is introduced so that the camber is introduced as much as the prestressed line of the dotted line, so that the prestress is introduced throughout the structure.

The direction of the external PS force 18, which is an acting direction of the camber deformation acting on the arch rib block 31, is offset from the lower end 36 of the arch rib block in a direction that can be canceled according to the bending moment shape caused by the external force. It may be inward or vice versa.

6 (a) and 6 (b) illustrate an external PS force introduction device 40 for introducing prestress into the prestressed prefabricated box structure or prestressed prefabricated arch structure 20, 30 of the present invention.

The wall PS 12 or the arch rib blocks 31 and 34 in the inner and outer end blocks 16 and 17 installed on the lower slab block 11 or the lower slab end block 21 are mounted on the external PS force introduction device 40. The external PS force introduction device 40 is installed in the space 15, which is a free space, and the jack 41 or bolt nut jack 44 of the device is operated within the design management value so that the wall block 12 Alternatively, when the arch rib blocks 31 and 34 are pushed inward or outward, the wall block or the arch rib block is deformed and the upper slab block 13 or the arch rib blocks 31, 34 and 35, which are integrally assembled therewith, are also deformed. As a result, prestress was introduced to the entire structure by the deformed size.

6 (a) shows that the wall block 12 or the arch rib block 31, 34 is disposed in the space of the inner and outer end blocks 16 and 17 installed on the lower slab block 11 or the lower slab end block 21. When the jack 41 is inserted into the space 15 installed and free space, and the external PS force 18 is applied by operating the jack within the design management value, the wall block or the arch rib block is moved inward or outward. A plurality of fixing wedges 42 are inserted in close contact with the generated gaps, and the jacks 41 are removed, and the gaps are filled with fixing concrete 43 to the wall blocks 12 or the arch rib blocks 31 and 34. The compressive force is introduced and at the same time prestress is introduced to the entire cross section of the structure.

6 (b) shows that the wall block 12 or the arch rib block 31, 34 is disposed in the space of the inner and outer end blocks 16 and 17 installed on the lower slab block 11 or the lower slab end block 21. Insert the bolt nut jack 44 into the space 15, which is installed and free space, and turn the tightening screw 47 to apply the external PS force 18 within the design management value. When the external PS force 18 is introduced into the wall block 12 or the arch rib blocks 31 and 34, deformation occurs while moving inward or outward, and the fixing concrete 43 is formed in the space formed by the deformation. When it is poured and fixed, the compressive force is introduced into the wall block 12 or the arch rib blocks 31 and 34, and the prestress is introduced into the entire cross section of the structure.

The bolt nut jack 44 has a jack fixing pressure plate 45 is attached to one side of the bolt 46, the jack nut pressure plate 48 is inserted into the bolt 46 on the other side, between the pressure plate (45, 48) The tightening screw 47 is fitted to the thread of the bolt 46 is installed.

       In order to introduce an external PS force to the wall block 12 or the arch rib blocks 31 and 34 in the assembled state as described above, when a torque is applied to the tightening screw 47, the jack nut pressure plate 48 is moved to the wall block. 12 or the compression force is introduced into the arch rib block (31, 34).

Figure 7 (a) (b) is a rigid connection of the lower slab end block 21 and the lower slab central block 22 of the prestressed prefabricated block box or prestressed prefabricated block arch structure 20, 30 of the present invention or lower slab This is applied when the center column installation block 26 and the lower slab center block 22 are rigidly connected or the upper slab block 13 is rigidly connected to each other.

7 (a) shows the lower slab end block 21 and the lower slab center block 22, or the lower slab center column installation block 26 and the lower slab center block 22, or the upper slab block. Reinforcing steel bar connection device 50 is applied when the (13) to the steel connection.

The reinforcing steel connecting device 50 is attached to the center by facing the welding and compression and tension reinforcing bars (51, 56) and the connection angle 52 installed on both sides of the block, connected to the compression reinforcing bar (51) The connecting plate 53 is connected to the upper portion of the installed connection angle 52 with the bolt nut 55, and the connecting plate 53 is installed at the upper and lower portions of the connecting angle 52 which are connected to the reinforcing bars 56 and face each other. And then connected to the bolt nut 55, the concrete 57 is poured block and block interconnection.

Figure 7 (b) is a reinforcing steel bar connection device 50 is applied when the lower slab end block 21 and the lower slab center block 22.

The device 50 extends the compression and tension reinforcing bars 51 and 56 installed in the lower slab end block 21 to the inside of the cross section of the lower slab center block 22, and hooks the ends of the reinforcing bars 51 and 56. (59), and the tension and compression reinforcing bars (51, 56) installed in the lower slab center block 22 extends to the portion where the reinforcing bar of the lower slab end block 21 is extended to finish with the hook (59) Then, the hooks (59) on both sides are to cross each other, and then the lower slab center block (22) is to be cast and cured in concrete to install on the site.

Figure 8 (a) (b) of the present invention prestressed prefabricated block box or prestressed prefabricated arch structure (20, 30) of the slab block and the wall block of the rigid connection of the slab block and the central wall block or the central arch rib block The member tightening device 60 is applied to the rigid connection between the lower arch rib block.

FIG. 8 (a) shows that the slab blocks 11 and 13 and the wall block 12 are rigidly connected or the slab blocks 11 and 13 and the center wall block 27 are rigidly connected or the central arch rib block 35 and the lower part. It is a member tightening device 60 to be applied when the arch rib block 34 is connected to each other.

The member tightening device 60 is an angle 62 at which one end of the block to be connected extends a predetermined length into the slab blocks 11 and 13 or the central arch rib block 35 and the reinforcing bar 69 is bent at the end 62. Are installed on both sides, and both ends of the angle 62 are provided to form a block block out end 67, and the other end portion to which the pressure plate 63 is provided so as to be in contact with the angle 62 installed on both sides. Coupled to the bolt nut 55, the pressure plate 63 is welded with an anchor 66, the rebar 69 is welded to the anchor 66 to the wall block 12, the central wall block (27) ) And the lower arch rib block 34 is embedded in the cross section, and the non-concrete concrete 68 is hardened by pouring the non-concrete concrete 68 in the block block end surface 67.

FIG. 8 (b) shows that the upper and lower slab blocks 11 and 13 and the wall block 12 are rigidly connected, or the upper and lower slab blocks 11 and 13 and the central wall block 27 are rigidly connected or the central arch block 35. The member tightening device 60 is applied when the lower and the arch rib block 34 is connected to each other.

The end of the device 60 is coupled to the front end key 78 is connected, the socket acupressure plate 72 is attached to the socket acupressure plate 72, respectively, while installing the anchors 66 on both sides within the connected end. While welding and embedding 71, it is also embedded in the other end to be connected, and the socket 71 and the sleeve 73 are installed on the outer side of the block to be connected while crossing each other at the connected end It is installed in the bolt block out end face 75 so as to be fixed to the end face by the nut 65 and the socket bolts 74, and the concrete is cast in the socket bolt block out end face 75 to harden the connection.

10; Prestressed Prefabricated Block Structure
11: lower slab block 12: wall block
13: upper slab block 14: sheath
15: Spacing 16: Internal Block
17: External Short Block 18: External PS Force (P)
20: Prestressed prefabricated box structure
21: Lower slab end block 22: Lower slab center block
23: PS steel wire
24: anchorage 25: prestressed strain line
26: lower slab center wall installation block
27: central wall block
29: T-shaped block out section 30: Prestressed prefabricated arch structure
31: Arch Rib Block
34: lower arch rib block 35: center arch rib block
36: lower part 37: upper slab
40: external PS force introduction device 41: jack
42: fixing wedge 43: fixing concrete
44: bolt nut 45: jack fixing plate
46: Bolt 47: Tightening Screw
48: Jack nut pressure plate
50: steel bar connection device 51: tension bar
52: connection angle 53: connection plate
54: welding 55: bolt nut
56: compressed steel 57: concrete
58: cast in place 59: Hook
60: member tightening device
62: angle 63: pressure plate
66: Anqaba 67: Konshu Blockout Cross Section
68: non-concrete concrete 69: rebar
71: socket 72: socket pressure plate
73: sleeve 74: socket bolt
75: socket bolt block-out section 76: grouting
78: shear key

Claims (20)

delete Lower slab end block 21 provided on both sides and the lower slab center block 22 installed in the middle of the lower slab end block, and the steel slab connection part 50 of the lower slab center block and the lower slab end block. And an inner and outer end blocks 16 and 17 having a predetermined space on the lower slab end block 21 and a wall block 12 provided in a space of the inner and outer end blocks 16 and 17. (15), an upper slab block (13) installed on the upper wall block, a member tightening device (60) which tightly connects the wall block and the upper slab block, and protrudes outward of the upper slab block (13). A fixing unit 24 provided at the end of the upper slab inner part 37, and a PS steel wire 23 is installed inside the upper slab block 13 and the fixing unit 24 provided at the end of the upper slab inner part 37. PS steel wire 23 settled in the) and the external PS installed in the gap (15) A prestress prefabricated block structure in which prestress is introduced by applying an external PS force to a rigidly connected prefabricated block structure, which is characterized by being a prestress prefabricated box structure composed of a force introduction device 40. The lower slab end block 21 provided on both sides, the lower slab center wall mounting block 26, and the lower slab center block 22 provided between the lower slab end block and the lower slab center wall mounting block; Reinforcing bar connection device (50) in which the lower slab end block, the lower slab center wall installation block (26) and the lower slab center block (22) are rigidly connected to each other, and the lower slab end block (21) and the lower slab center wall installation The wall block 12 and the central wall block 27 is installed on the top of the block 26, and the upper slab block 13 is installed on the wall block 12 and the upper wall block 27, Reinforcing steel bar connection device 50 and the upper slab block to be in contact with each other in the upper portion of the central wall block 27, and the upper slab block in contact with each other in the center wall block,
The member tightening device 60 which tightly connects the wall block and the central wall block 12 and 27 and the upper slab block 13, the lower slab end block 21 and the lower slab center wall installation block 26 and the wall. The member tightening device 60 which tightly connects the block and the central wall blocks 12 and 27, and the PS steel wire 23 are continuously installed in the cross section of the upper slab block 13, and the upper slab internal part 37 is provided. It is fixed in the anchorage 24 installed in the, and the PS steel wire is installed between the T-shaped block out end face 29 in the inner end portion 37 and the outer end block 17, the fixing unit 24 installed on the upper end of the inner end portion And pre-stressed prefabricated block structure in which the PS steel wire 23 is fixed in the T-shaped block-out cross section 29 and the prestress is introduced by applying an external PS force to the rigidly connected prefabricated block which is characterized by being a pre-stressed prefabricated box structure. . delete Reinforcing steel bar connection device for tightly connecting the lower slab end block 21 provided on both sides, the lower slab center block 22 is installed in the center of the lower slab end block, and the lower slab end block and the lower slab center block ( 50, an inner and outer end blocks 16 and 17 installed to have a space above the lower slab end block 21, and a gap 15 formed by installing a lower arch block 34 in a space of the inner and outer end blocks. ), And a member arranging device 60 in which the central arch rib block 35 installed on the lower arch rib block 34 and the lower arch rib block 34 and the central arch rib block are rigidly connected to each other. And a prestress prefabricated block structure in which prestress is introduced by applying an external PS force to the rigidly connected prefabricated prefabricated block structure formed of a prestress prefabricated arch structure including an external PS force introduction device 40 installed in the gap 15. delete delete The method according to any one of claims 2, 3, and 5,
The reinforcing steel connection device 50 is installed to the center of the compression and tension reinforcing bar 51, 56 and the connecting angle 52 is attached to the welding block is installed on both sides, but the portion where the compression reinforcement 56 is connected to a certain length To be overlapped up and down, the overlapping portion is connected to the bolt nut 55, and the portion connected to the reinforcing bar 51 is to face each other in the connection portion 53 is connected, the connection angle ( 52, the connecting plate 53 is installed on the upper and lower parts and connected with the bolt nut 55, and then the concrete 57 is poured and the external SP is applied to the rigidly-assembled prefabricated block characterized in that the block is interconnected with the block. Prestressed prefabricated block structure that introduces prestress by acting. The method according to any one of claims 2, 3, and 5,
The member tightening device 60 is an angle 62 welded to the reinforcement 69, which is bent and extended by a predetermined length into the slab blocks 11 and 13 or the central arch rib block 35 at one end of the block to be connected. Are installed on both sides, and both ends of the angle 62 are provided to form a block block out end 67, and the other end portion to which the pressure plate 63 is provided so as to be in contact with the angle 62 installed on both sides. Coupled to the bolt nut 55, the pressure plate 63 is welded with an anchor 66, the rebar 69 is welded to the anchor 66 to the wall block 12, the central wall block (27) And the lower arch rib block 34 is embedded in the cross-section, and the outer block PS pre-constructed block is characterized in that the non-concrete concrete 68 is cast and cured and hardened by the solid block connection. Prestress prefabricated blade that introduces prestress by applying force Structures. The method according to any one of claims 2, 3, and 5,
The member tightening device 60 is coupled to the end portion is connected to the shear key 78, the socket acupressure plate 72 is attached to each side while installing the anchors 66 on both sides in the connected end, the socket acupressure plate 72 The socket 71 is embedded in the other end to be connected, and the embedded socket 71 and the sleeve 73 are intersected at the end to be connected to each other to the outer side of the block to be connected. It is installed in the installed socket bolt block-out end face 75 to be fixed to the cross-section by the nut 65 and the socket bolts 74, and cast concrete in the socket bolt block-out end face 75 to harden connection Prestressed prefabricated block structure that introduces prestress by applying external PS force to rigidly connected prefabricated block. delete The lower slab end block 21 is installed on both sides of the ground, and the lower slab center block 22 is installed in the middle of the lower slab end block 21 installed on both sides, and the lower slab center block 22 and the lower part. The slab end block 21 is rigidly connected using the reinforcing steel connection device 50, and the wall in the inner and outer end blocks 16 and 17 having a predetermined space on the upper side of the slab end block 21 installed on both sides. While installing the block 12 to form a gap 15 which is a free space, while installing the upper slab block 13 on top of the wall block 12 to the wall block 12 and the upper slab block 13 PS and inside the upper slab block 13 while the fixing unit 24 is firmly connected to the member tightening device 60, and the fixing unit 24 is installed at the end of the upper slab inner part 37 protruding outward of the upper slab block 13. The steel wire 23 is installed and installed at the end of the upper slab inner portion 37. The PS steel wire 23 is fixed to the fixed fixing member 24, an external PS force introduction device 40 is installed in the gap 15, and the jacks 41 and 44 of the external PS force introduction device 40 are installed. By using the external PS force 18 on the wall block 12 to generate a deformation while generating a deformation in the upper slab block 13 that is rigid with the wall block 12, the entire structure by the generated deformation Pre-stressed prefabricated box structure, characterized in that the pre-stressed prefabricated box structure for introducing the prestress to the upper slab block 13 by tensioning the PS steel wire 23 installed in the upper slab block 13, while introducing the prestress. Construction method of prestressed assembled block structure in which prestress is introduced by applying external force to the block. The lower slab end block 21 is installed on both sides of the ground, and the lower slab center wall installation block 26 is installed in the center of the lower slab end block installed on both sides, and the lower slab end block 21 and the lower slab are provided. The lower slab end block 21 and the lower slab center wall mounting block 26 and the lower slab center block 22 are respectively provided with the lower slab center block 22 between the central wall mounting block 26. Strong connection using the reinforcing rod connection device 50, and the wall block 12 and the central wall block 27 is installed on the lower slab end block 21 and the lower slab center wall installation block 26 The upper slab block 13 is installed on the top of the wall block 12 and the central wall block 27, and the upper wall slab block 13 is in contact with each other at the top of the central wall block 27. Reinforcing steel bar connection device (50) the upper slab block (13) Using the steel slab, the central wall blocks (12, 27) and the upper slab block (13) to the steel fastening device 60, while the lower slab end block 21 and the lower slab center wall at the same time The installation block 26 and the wall block and the central wall block (12, 27) is rigidly connected to each other by the member tightening device 60, and the PS steel wire 23 is continuously installed in the cross section of the upper slab block (13) , While fixing to the anchorage 24 installed in the upper slab inner end portion 37, and installing a PS steel wire between the inner end portion 37 and the outer end block 17 between the T-shaped block out end face 29, Pre-stressed prefabricated box for fixing the PS steel wire 23 in the fixing unit 24 and the T-shaped block-out cross-section 29 installed on the upper part of the unit, and introducing the tension force to the installed steel wire, respectively, and then fixing the fixing unit to the fixing unit. Assembly with rigid connection characterized by the structure Method of constructing prestressed assembled block structure in which prestress is introduced by applying external PS force to the block. delete The lower slab end block 21 is installed on both sides of the ground, and the lower slab center block 22 is installed at the center of the installed lower slab end block, and the lower slab end block 21 and the lower slab center block 22 are provided. ) Is rigidly connected using the reinforcing steel connection device 50, and the lower arch rib block 34 is installed in the inner and outer end blocks (16, 17) installed to have a space on the upper end of the lower slab end block (21) While forming a space 15, which is a free space, at the same time, a central arch rib 35 is installed on the lower arch rib block 34, and the lower arch rib block 34 and the central arch rib 35 are disposed. Strongly connected to the member fastening device 60, the external to the lower portion 36 of the lower arch rib block 34 by using the jacks (41, 44) of the external PS force introduction device 40 installed in the gap (15). When the PS force 18 is applied, the lower arch rib 34 is deformed and the lower arch rib The central arch rib block 35, which is integrally connected to the lock 34, is also deformed at the same time so that the prestress is applied to the rigidly connected prefabricated block, which is characterized by being a prestress prefabricated arch structure in which the prestress is introduced throughout the structure. Construction method of pre-stressed prefabricated block structure. delete delete The method according to any one of claims 12, 13 and 15,
The reinforcing steel connection device 50 is installed to the center of the compression and tension reinforcing bar 51, 56 and the connecting angle 52 is attached to the welding block is installed on both sides, but the portion where the compression reinforcement 56 is connected to a certain length To be overlapped up and down, the overlapping portion is connected to the bolt nut 55, the part connected to the reinforcing bar 51 is to face each other in the connecting portion 53 is connected, the connection angle ( 52, the connecting plate 53 is installed on the upper and lower parts and connected with the bolt nut 55, and then the concrete 57 is poured to the rigidly connected prefabricated block characterized in that the blocks are interconnected with each other. Method of constructing prestressed prefabricated block structure in which prestress is introduced by acting. The method according to any one of claims 12, 13 and 15,
The member tightening device 60 extends a predetermined length into the slab 11, 13 or the central arch rib block 35 at one end of the block to be connected to the angle 62 is welded reinforcement 69 is embedded It is installed on both sides, both ends of the angle 62 is installed to form a block block out end 67, the other end is connected to each of the pressure plate 63 is installed in contact with the angle 62 is installed on both sides and bolts Coupling with a nut (55), the anchor plate (63) is welded to the anchor plate (66), the rebar (69) is welded to the anchor bar (66) wall block 12, the central wall block (27) And an outer PS force to be embedded into the lower arch rib block 34 section, and to pour and cure the non-concrete concrete 68 in the cone block out cross section 67 by hardening and connecting the non-rigid concrete block. Prestressed Prefabricated Blocks with Prestress Construction method of the composition. The method according to any one of claims 12, 13 and 15,
The member tightening device 60 is coupled to the end portion is connected to the shear key 78, the socket acupressure plate 72 is attached to each side while installing the anchors 66 on both sides in the connected end, the socket acupressure plate 72 The socket 71 is embedded in the other end to be connected, and the embedded socket 71 and the sleeve 73 are intersected at the end to be connected to each other to the outer side of the member to be connected. It is installed in the installed socket bolt block-out end face 75 to be fixed to the cross-section by the nut 65 and the socket bolts 74, and cast concrete in the socket bolt block-out end face 75 to harden connection Method of constructing prestressed prefabricated block structure in which prestress is introduced by applying external PS force to rigidly connected prefabricated block.

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