JPH0757950B2 - Civil Engineering Mountain Stop Structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing adjuster for civil engineering construction mountain truss structures, and more particularly to a backing adjusting body for civil engineering construction mountain truss structures which facilitates adjustment of a gap between a mountain retaining wall and an upset. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as one of the construction methods for constructing underground chambers and underground malls, cliff work has been carried out to prevent collapse of the excavated ground. Along with this, there is a tendency that the basement floor is deeply multi-layered, and along with this, the scale of the mountain girder structure used for mountain girder construction is also increasing. There are roughly two types of mountain piers, concrete gravel framing and yaita yama framing. The former is more expensive, and the latter is widely used for economic reasons. (S.M.W.
Construction method) parent pile side sheet pile structure is adopted in many sites.

This S. M. W. The main pile lateral sheet pile structure of the construction method is composed of a cliff wall which supports earth pressure of the surrounding ground at the time of excavation and a support work which supports the cliff wall. The cliff wall is composed of a main pile and a side sheet pile, and the cliff wall is supported by the uprising of the support work.

[0004] At this time, it is necessary to closely contact the parent piles such as the H steel parent piles constituting the mountain retaining wall with the abdomen to prevent a gap from being formed in order to reliably support the back surface earth pressure. desirable. Therefore, a backing material is interposed between the H steel parent pile and the upset,
Backfilling is generally performed to eliminate the space between the two.

By the way, as this back lining work, concrete back lining is generally performed. However, the work is stagnant because it takes a long time to build the formwork and the curing period is long until a predetermined strength is secured. There are drawbacks such as Furthermore,
At the time of dismantling, it not only takes time and labor to crush the back-filled concrete, but it also has the drawback of requiring waste material treatment.

Then, recently, as a means for solving such a drawback of back-filling construction, a method of back-lining construction using a back-lining block and a back-lining liner has been proposed.

This method, as well shown in FIG. 5, includes a backing block between a main pile c which forms a mountain retaining wall b together with a transverse sheet pile a and a bulging d which constitutes a support work. By interposing e, a backing liner f is further interposed between the block e and the parent pile c, and a cotter h is driven into a wedge-shaped groove g provided at the center of the block e. Is.

However, in the construction using the backing block e, since the driving direction of the cotter h and the moving direction of the backing do not match and are inclined, the driving force to the cotter h does not act effectively. However, the backing block e has a complicated structure, is costly, and has a large weight.

Further, for the above reason, there is a disadvantage that the width adjustment of the backing block e by placing the cotter h is complicated and time-consuming.

In view of such drawbacks of the prior art, the inventor of the present invention has provided the following as a backing adjustment body having a simple structure and capable of easily and surely performing backing. .

That is, the back-filling adjustment body is provided with the mountain retaining wall b.
And the supporting work i, there is a back consisting of an adjusting clamp k interposed in the gap between them and a plurality of adjusting spacers m filled in the initial gap between the clamp k and the retaining wall b. The adjusting clamp k is provided.
The rising plate adjusting plate r in which the adjusting concave plate q having a concave surface is integrally formed on the locking plate p having the locking portion with the rising d, and the flat connecting plate s has a concave surface. Adjusting plate u on the mountain retaining wall side integrally formed with the adjusting concave plate t, and a bolt-like adjusting shaft v which is interposed between these adjusting plates and has a non-circular shaft portion.
And a rectangular plate-shaped nut plate w into which the tip screw portion of the coaxial v can be screwed, and further the plurality of adjustment spaces.
And a connecting plate x which can be connected to the mountain retaining wall side adjusting plate u via a bolt or the like, the plate x and the mountain retaining wall b.
Provided is a backing adjustment body for civil engineering construction mountain truss structure, which includes a single plate y filled between

However, in the back-insertion adjusting body n, a plurality of adjusting spacers m, plate members such as the connecting plate s and the locking plate p, and fastening members such as the adjusting shaft v, bolts and lock nuts are provided. Since it is necessary, the structure is not simple, the number of parts is large, the assembly and removal at the time of backfilling is not always easy, the management of these parts is complicated, and there is also a costly side from these things. Therefore, improvement of this point was desired.

[0013]

SUMMARY OF THE INVENTION In view of the problems of the prior art as described above, the main object of the present invention is to provide a backing adjusting body interposed in the gap between the retaining wall and the supporting structure with a specific structure. To provide a backing adjustment body which has a simple structure, can be easily and surely back-installed, has simple parts management, and can be significantly reduced in cost. It is in.

[0014]

According to the present invention, such an object is to reduce the earth pressure of the excavated ground and the earth retaining wall composed of the side sheet pile and the main pile, and the back earth pressure applied to the same wall. In a civil engineering construction mountain truss structure comprising a supporting structure composed of a supporting uprising and a girder, a backfill adjusting body is formed between the mountain retaining wall and the supporting structure and is interposed between them. It is achieved by providing a backing adjustment body for civil engineering construction mountain truss structures, which is characterized in that it is provided with an adjustment block.

[0015]

As described above, according to the present invention, the adjustment block is interposed in the gap between the end face of the main pile which constitutes the mountain retaining wall together with the cross sheet pile and the end face of the uprising which constitutes the supporting work together with the cutting beam. ,
Moreover, since an initial load (for example, a preloading method using a jack) applied to the supporting work acts between the facing end surface of the adjustment block and the end surface of the parent pile and the end surface of the upset, these end surfaces are in close contact with each other, Even if there is a dimensional error between the cliff wall and the support work, the backfill adjustment can be performed by absorbing the error.

Therefore, it is possible to surely support the back surface earth pressure acting on the cliff wall by the support work by the back-filling adjustment body, and it is possible to prevent accidents such as ground subsidence and sediment collapse.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

1 and 2 show a first embodiment of the present invention, in which a backing adjustment body 10 includes an adjustment block 11 and a locking member 1.
2 and the end face 3a of the main pile 3 which constitutes the mountain stop wall 1 together with the cross sheet pile 2 in the civil engineering construction mountain girder construction structure of the existing position earth and sand mixing method (SMW method), and the mountain girder. By interposing the supporting work 4 facing the wall 1 with the end face 6a of the abdomen 6 that constitutes the cut beam 5, these end faces are brought into close contact with each other, and the retaining wall 1 and the supporting work 4 are backed up. It can be adjusted.

The adjusting block 11 has a polygonal cross section (hexagonal shape in this embodiment), a circular reduction hole 11a is formed in the center, and the adjustment block 11 is formed in a square bar shape as a whole. In advance, prepare a plurality of types and prepare them. A plurality of circular locking holes 11b for locking the main pile 3 and the uprising 6 are formed through the respective end faces of the adjustment block 2 in the longitudinal direction.

In the adjusting block 11, the distances La, Lb, Lc between the opposing sides of the polygon are not the same,
They are formed to have different dimensions.

In this case, the distances La, Lb, L
c is formed to have a size for each predetermined pitch. For example, when there are three adjustment blocks 11 of large, medium, and small,
The small adjustment block 11 has La = 25 mm and Lb = 30.
mm, Lc = 35 mm, and the adjustment block 11 therein is La = 40 mm, Lb = 45 mm, Lc = 50.
mm, and the larger adjustment block 11 is La =
60 mm, Lb = 70 mm, Lc = 80 mm, so that a single adjustment block 11 produces 25
The backing adjustment can be performed by closing the gap T of mm to 80 mm.

The distances La, Lb, Lc between the opposing sides of the adjusting block 11 are not limited to those of the above-mentioned dimensions, but can be formed in arbitrary dimensions, and are prepared in advance. It goes without saying that the number of adjustment blocks 11 to be set can be set to an arbitrary number.

The locking member 12 has a circular cross section and is bent at a right angle so that it can be fitted into a circular locking hole 11b formed in the end surface of the adjustment block 2. It is formed of an L-shaped rod and has the locking hole 11b.
And a circular locking hole 6b formed in the abdomen 6 are penetrated and fitted to lock both of them.

Next, the usage will be described.

First, an end surface 3a of a main pile 3 that constitutes the mountain retaining wall 1 together with the transverse sheet pile 2 and an end surface 6a of the uprising 6 that constitutes the supporting structure 4 facing the mountain retaining wall 1 together with the cross beam 5. The gap T is measured, and the distances La and L between different facing sides that are prepared in advance.
From the plurality of adjustment blocks 11 having b and Lc, the adjustment block 11 having the distance La between the facing sides that is the closest to the gap T is selected. Next, the adjustment block 11 having the selected side-to-side distance La of a predetermined dimension is installed on the main pile 3 described above.
The back-tucking adjustment is performed by fitting into the gap T between the end face 3a of the and the end face 6a of the uprising 6 and closing the gap T.

At this time, the locking hole 11 of the adjusting block 11
b and the locking hole 6b of the abdomen 6 are fitted into the locking member 12 by penetrating the locking member 12 so that they are locked to each other.

As a result, the adjusting block 11 is fitted and fixed in a predetermined position, and is not moved by the locking member 12 against the intention, and the end face 3a of the main pile 3 and the upright 6 are lifted.
The backing adjustment can be performed by closing the gap T between the end surface 6a and the end surface 6a.

Next, FIG. 3 shows a second embodiment of the present invention.
The backing adjustment body 10 is composed of the adjustment block 11 and the locking member 12 as in the first embodiment, but in the second embodiment, the present position earth and sand mixing method (SMW) is used. End surface 3a of a main pile 3 that constitutes a mountain stop wall 1 together with a transverse sheet pile 2 in a civil engineering construction mountain girder structure of (construction method), and a belly that constitutes a supporting structure 4 facing the mountain stop wall 1 together with a cut beam 5. A plurality of adjustment blocks 11 and 11 are interposed in the gap between the end 6a of the raising 6 and
As a result, the respective end faces are brought into close contact with each other, and the cliff wall 1 and the support work 4 are adjusted to be back-inserted.

Then, the locking member 12 is inserted into the locking holes 11b of the plurality of adjustment blocks 11 and the locking hole 6b of the abdomen 6, so that they are mutually fitted. By locking, it is possible to adjust the backing of the gap T between the end surface 3a of the main pile 3 and the end surface 6a of the uprising 6.

Therefore, in the first embodiment of the present invention that is well shown in FIGS. 1 and 2, the gap T between the end surface 3a of the main pile 3 and the end surface 6a of the uprising 6 is adjusted in advance. Even when the distances La, Lb, Lc between the opposing sides of 11 are larger than the maximum dimension, the gap T is closed by using the plurality of adjustment blocks 11 as in the present embodiment. You can adjust the backfill.

As a result, the adjusting block 11 is fitted and fixed at a predetermined position, and is not moved by the locking member 12 against the intention.
The backing adjustment can be performed by closing the gap T between the end surface 6a and the end surface 6a.

Next, FIG. 4 shows a third embodiment of the present invention.
The backing adjustment body 10 is provided with a single adjustment block 11 and a locking member 12 as in the first embodiment, and in the third embodiment, the back adjustment body 11 and the locking member 12 are provided together. Position End face 3 of a main pile 3 that constitutes a dam wall 1 with a cross sheet pile 2 in a civil engineering construction dam structure of earth and sand mixing method (SMW method)
The end face 6 of the abdomen 6 that constitutes the supporting structure 4 facing the adjusting block 11 and the mountain wall 1 together with the cutting beam 5
Adjustment plate 1 for closing the gap between the two and a
3 are interposed respectively.

The adjusting plate 13 is formed in the shape of a plate having a rectangular cross section, and is fitted with a plurality of circular locking holes 11b formed in each end face of the adjusting block 11 in the longitudinal direction so as to fit a plurality of holes. A circular locking hole 13a is formed.

At this time, the locking hole 11 of the adjusting block 11
b, the locking hole 6b of the uprising 6, and the adjusting plate 1
By engaging the locking member 12 with the locking hole 13a of No. 3 and fitting it, these are locked mutually.

As a result, the adjustment block 11 and the adjustment plate 13 are fitted and fixed in a predetermined position, and the locking member 12 does not move them against the intention, and the end surface 3a of the main pile 3 is not moved. It is possible to adjust the backing of the gap T between the end surface 6a of the uprising 6 and the uprising 6.

Therefore, in the first embodiment of the present invention that is well shown in FIGS. 1 and 2, the earth mooring in the civil engineering earth mooring structure of the in-situ sand mixing method (SMW method) is used. The adjustment block 11 is provided in the gap between the end surface 3a of the parent pile 3 that forms the wall 1 together with the cross sheet 2 and the end surface 6a of the uprising 6 that forms the supporting structure 4 facing the mountain wall 1 together with the cut beam 5. Even when a gap is formed between these end faces when interposing them, the configuration of this embodiment allows the respective end faces to be in close contact with each other without forming a gap between the end faces. It is possible to adjust the back wall of the stop wall 1 and the support work 4.

Next, FIG. 5 shows a fourth embodiment of the present invention.
The backing adjustment body 10 is provided with a plurality of adjustment blocks 11 and locking members 12 as in the second embodiment, and in the fourth embodiment, the adjustment blocks 11 are interlocked with each other. The adjusting plate 13 that closes the gap between the two is interposed therebetween.

At this time, the locking hole 11 of the adjusting block 11
b, the locking hole 13a of the adjusting plate 13, and the locking hole 6b of the abdomen 6 are fitted into the locking member 12 by penetrating the locking member 12 to lock them.

As a result, the adjustment block 11 and the adjustment plate 13 are fitted and fixed in a predetermined position, and the locking member 12 does not unintentionally move the end surface 3a of the parent pile 3. It is possible to adjust the backing of the gap T between the end surface 6a of the uprising 6 and the uprising 6.

Therefore, in the first embodiment of the present invention, which is well shown in FIG. 1 and FIG. 2, the earth mooring in the civil engineering earth mooring structure of the in-situ sand mixing method (SMW method). The adjustment block 11 is provided in the gap between the end surface 3a of the parent pile 3 that forms the wall 1 together with the cross sheet 2 and the end surface 6a of the uprising 6 that forms the supporting structure 4 facing the mountain wall 1 together with the cut beam 5. Even when a gap is formed between these end faces when interposing them, the configuration of this embodiment allows the respective end faces to be in close contact with each other without forming a gap between the end faces. It is possible to adjust the back wall of the stop wall 1 and the support work 4.

Next, FIG. 6 shows a fifth embodiment of the present invention.
Unlike the above-described embodiments, the adjustment block 11 constituting the backing adjustment body 10 has a decagonal cross section, a circular reduction hole 11a is formed in the center, and the adjustment block 11 is formed into a square bar shape as a whole. There is.

A plurality of circular locking holes 11b are formed in each end face of the adjustment block 2 in the longitudinal direction.

Further, the adjusting block 11 is similar to the first embodiment in that the distances La, Lb between the opposing sides of the polygon are equal to each other.
Lc, Ld, and Le are not formed to have the same size but are formed to have different sizes, and the distances La, Lb, Lc, between the facing sides are different from each other.
Since Ld and Le are formed to have a size for each predetermined pitch (for example, three adjustment blocks 11 of large, medium, and small).
If there is, the small adjustment block 11 is La = 15 m
m, Lb = 20 mm, Lc = 25 mm, Ld = 30 m
m, Le = 35 mm, and the adjusting block 11 therein is La = 40 mm, Lb = 45 mm, Lc = 50 m.
m, Ld = 55 mm, Le = 60 mm, and the larger adjustment block 11 has La = 70 mm and Lb = 80.
mm, Lc = 90 mm, Ld = 100 mm, Le = 11
Formed in 0 mm, this allows a single adjustment block 1
1 to close the gap T of 15 mm to 110 mm,
Back adjustment can be done) 1 adjustment block 1
Since the number of opposing sides in 1 is large (the number of opposing sides is 3 in the hexagonal section, but the number of opposing sides is 5 in the decagonal section), the distances La and Lb between the opposing sides. ,
Lc, Ld, and Le also increase.

Therefore, when the same number of adjustment blocks 11 are prepared, the distances La, Lb, L between the opposing sides which can be prepared are prepared.
When the numbers of c, Ld, and Le increase, and different distances La, Lb, Lc, Ld, and Le between opposite sides are prepared in the same range, the number of adjustment blocks 11 to be prepared decreases. There is an effect.

Then, the locking hole 11 of the adjusting block 11
b and the engaging hole 6b of the uprising 6 are engaged with each other by penetrating and engaging the engaging member 12 with each other.

As a result, the adjusting block 11 is fitted and fixed at a predetermined position, and is not moved by the locking member 12 against the intention, and the end face 3a of the main pile 3 and the uprising 6 are provided.
The backing adjustment can be performed by closing the gap T between the end surface 6a and the end surface 6a.

The cross-sectional shape of the adjusting block 11 is not limited to the hexagonal shape and the decagonal shape of the above-described embodiment, and any polygonal shape such as a quadrangle or an octagon may be used. Therefore, it is possible to prepare a large number of facing side distances L by forming the facing side distances L of different sizes.

Further, the locking hole 11b of the adjusting block 11
The locking hole 6b formed in the uprising 6 is not limited to the circular hole of the above embodiment, but may be a polygonal hole such as a quadrangle or a non-circular hole such as an ellipse or an oval. Locking member 12 formed into a non-circular cross section so that it can be fitted into these non-circular holes
By engaging the non-circular hole with the locking member 12
Can be locked by interlocking with each other by preventing the rotation of the.

Further, the adjusting plate 13 is not limited to the flat plate-shaped one, but may have an arc-shaped plate surface.

The adjustment block 11, the main pile 3, the uprising 6, and the adjustment plate 13 are connected to each other by fitting the locking member 12 of the above embodiment into the locking holes 6b and 11b. Without being limited, it can be performed by fitting the projections provided on the main pile 3 and the uprising 6 into the locking holes 11b provided in the adjustment block 11, and the locking member 12
There is an effect that is unnecessary.

Further, the adjusting block 11 and the uprising 6,
The coupling with the adjusting plate 13 is not limited to the method of fitting the locking member 12 into the locking holes 6b, 11b, 13a and coupling the locking member 12 of the above-described embodiment, and the adjustment block 11, the uprising 6, and Needless to say, this can be done by inserting a connecting bolt into the locking holes 6b, 11b, 13a formed in the adjusting plate 13 and screwing the connecting bolt into the nut.

The back-filling adjusting body 10 is optimally used for the earth retaining structure for civil engineering and construction of the above-mentioned in-situ sand mixing method (SMW method), but it is not limited to this. Instead, it can be suitably used for a replacement construction method, a pack construction method (PIPW construction method), and other mountain suspension structures for civil engineering.

[0053]

As described above, according to the present invention, the retaining wall 1
Since the back pressure adjusting body is such that the acting direction of the earth pressure acting on the supporting structure 4 and the reaction direction of the end surface of the adjusting block 11 coincide with each other, the pressing force at the time of fitting the adjusting block 11 is equal to the retaining wall 1 It effectively acts on the end surface 3a of the parent pile 3 that constitutes the above and the end surface 6a of the uprising 6 that constitutes the support work 4 that faces the mountain retaining wall 1.

Therefore, back-back adjustment becomes reliable and easy,
The adjustment work is simplified. In addition, the structure of the backing adjustment body is simplified and the weight is reduced, and in addition to the simplification of the above work, the cost is significantly reduced.

Further, since the adjusting block 11 is formed in a polygonal shape, one adjusting block 11 has a plurality of facing sides, and the distances La, Lb, L between the facing sides.
Since c, Ld, and Le are not formed to have the same size but are formed to have different sizes, one adjustment block 11 has a plurality of distances La, Lb, Lc, Ld, and Le between opposed sides. .

Therefore, when the same number of adjustment blocks 11 are prepared, the distances La, Lb, L between the opposing sides which can be prepared are prepared.
When the numbers of c, Ld, and Le increase, and different distances La, Lb, Lc, Ld, and Le between opposite sides are prepared in the same range, the number of adjustment blocks 11 to be prepared decreases. There is an effect.

In addition, the end surface 3 of the main pile 3 that constitutes the mountain wall 1
a, and an uprising 6 that constitutes the support work 4 facing the mountain wall 1
Distance L between the opposing sides of the dimension closest to the gap with the end face 6a of
Adjustment block 11 having a, Lb, Lc, Ld, Le
Since the back-filling adjustment is performed by selecting and fitting and closing the gap T, the structure is simple, and the back-filling work can be performed easily and surely, and the parts management is simplified. Not only does it have the advantage of being able to significantly reduce costs.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a civil engineering construction work dam structure provided with a backing adjustment body according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional plan view of a civil engineering and construction mountain truss structure provided with the backfill adjustment body.

FIG. 3 is a partial cross-sectional plan view of a civil engineering construction dam structure provided with a backing adjustment body according to a second embodiment of the present invention.

FIG. 4 is a partial cross-sectional plan view of a civil engineering construction dam structure provided with a backfill adjustment body according to a third embodiment of the present invention.

FIG. 5 is a partial cross-sectional plan view of a civil engineering construction mountain truss structure provided with a backing adjustment body according to a fourth embodiment of the present invention.

FIG. 6 is a partial cross-sectional plan view of a civil engineering construction dam structure provided with a backing adjustment body according to a fifth embodiment of the present invention.

FIG. 7 is a perspective view of an essential part of a civil engineering and construction mountain mooring structure of a conventional example.

[Explanation of symbols]

1 mountain stop wall 2 side sheet pile 3 main pile 3a end face (main pile) 4 support work 5 girder 6 uprising 6a end face (uprising) 6b locking hole (uprising) 10 backing adjustment body 11 adjustment block 11a mitigation hole (Adjustment block) 11b Locking hole (adjustment block) 12 Locking member 13 Adjustment plate 13a Locking hole (adjustment plate) T Gap between the end surface of the main pile and the end surface of the upset La, Lb, Lc, Ld, Le Opposite sides Distance (adjustment block)

Claims (9)

[Claims] 1. A retaining wall composed of a cross sheet pile for receiving the earth pressure of the excavated ground and a main pile, and a support structure composed of an uprising and a girder for supporting the back earth pressure applied to the wall. in civil engineering Yamatome Frame, between the Yamatome wall and shoring, civil engineering Yamatome Frames, characterized in that the back write adjusting body that will be interposed both gap is provided. Wherein said Urakomi adjusting body is adjusted block and, Civil engineering Yamatome Frames according to claim 1, characterized in that it consists of locking members. 3. A plurality of the adjusting blocks are provided between a main pile forming the mountain retaining wall and an uprising forming the supporting work. Two
Civil engineering Yamatome Frames described. Wherein said adjusting the cross-sectional shape of the block, Civil engineering Yamatome Frames according to claim 2, characterized in that it is formed into a polygon. Wherein each opposing side distance between the polygons, Civil engineering Yamatome Frames according to claim 4, characterized by being formed in mutually different sizes. Wherein said polygons, Civil engineering Yamatome Frames according to claim 4, wherein the hexagonal. Wherein said polygon, decagon a civil engineering Yamatome Frames according to claim 4, characterized in that. 8. An adjusting plate for closing a gap between the adjusting block and a main pile forming the mountain retaining wall, or between the adjusting block and an uprising forming the supporting work. civil engineering Yamatome Frames of but 請 Motomeko 2 wherein you characterized in that it is interposed. 9. between said plurality of adjustment blocks mutually civil engineering Yamatome Frames according to claim 3, wherein adjusting plate for closing the gap between them, characterized in that it is interposed.