CN211898474U

CN211898474U - Novel mould bag and mould bag cofferdam

Info

Publication number: CN211898474U
Application number: CN202020193911.1U
Authority: CN
Inventors: 刘轩源; 张涛; 刘荣岗; 钟财生; 曾军飞; 林晓越; 侯玮玮; 朱成; 汤健; 罗伟财; 刘灼佳; 陈健斌
Original assignee: CCCC Fourth Harbor Engineering Co Ltd
Current assignee: CCCC Fourth Harbor Engineering Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-11-10
Anticipated expiration: 2030-02-21

Abstract

The utility model relates to a submarine tunnel construction technical field, concretely relates to novel mould bag and mould bag cofferdam, novel mould bag includes the upper strata, the lower floor, long limit layer and wide limit layer, each layer forms confined bag column structure through making up, bag form inner chamber is used for filling the mortar, the wide limit layer lateral surface of long limit layer and adjacent side is connected with the holding ring, the mould bag cofferdam is formed by this novel mould bag coincide, through setting up the holding ring at long limit layer of mould bag and wide limit layer lateral surface, in the submerged work progress of mortar is filled to the model, at first arrange the spud in the position that needs the mould bag to set the end, then realize fixing a position with the holding ring cover of mould bag on the spud, the mould bag accomplishes the mortar of recharging after fixing a position through the spud, the mould bag realizes accurate end of setting under the condition that the mortar is dead weight.

Description

Novel mould bag and mould bag cofferdam

Technical Field

The utility model relates to a submarine tunnel construction technical field, especially a novel mould bag and mould bag cofferdam.

Background

The main construction method adopted for constructing the underwater tunnel comprises the following steps: the method comprises a dike open cut method, a pneumatic caisson method, a shield method and a pipe sinking method, wherein when the dike open cut method and the pipe sinking method are adopted for construction, temporary surrounding rock construction is required, and when the pipe sinking method is adopted for construction, the method mainly comprises a river levee section foundation pit and surrounding rock engineering. During interim country rock construction, prior art mainly adopts the mode of steel sheet wall stagnant water, through squeezing into the steel sheet in the country rock, adopts the mode that negative and positive knot is connected between steel sheet and the steel sheet to adopt stagnant water material to joint a seam on back of the body water one side, thereby realize the stagnant water function. The other water stop mode mainly adopts a sand bag filling structure, and is constructed by filling a sand bag side slope on one side of a riverside (riverside or coastal side), but the following problems mainly exist when the cofferdam is built by adopting the sand bag filling structure:

first, the sand bag is not conveniently positioned. The sand filling bag can be used for filling mortar on water and can also be used for filling mortar under water, but no matter which mode is adopted, the sand filling bag is difficult to be accurately positioned due to the influence of factors such as water flow, inconvenient operation and the like, so that the cofferdam structure cannot be constructed according to the design requirement;

secondly, when the sand filling bag is filled with mortar, the mortar is difficult to be uniformly distributed in the sand bag, and the mortar is concentrated due to overlarge local weight;

in addition, when the cofferdam is built by filling sand bags, the sand bags at the bottom are extruded by the sand bags at the upper part, the acting force is large, and the cloth bags are damaged or not compacted around, so that the stability and the quality of the cofferdam are affected.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the problem that the filled sand bag that exists is difficult to the location when adopting filled sand bag to build cofferdam structure among the prior art is provided, this mould bag makes the mould bag realize the location better when filling the mortar and sinking through the improvement of self structure to effectively guarantee cofferdam structure's stability and reliability.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a novel mould bag, includes upper strata, lower floor, long limit layer and wide limit layer, and each layer forms confined bag column structure through making up, and the bag column cavity is used for filling the mortar, the wide limit layer lateral surface of long limit layer and adjacent side is connected with the holding ring.

The positioning rings are arranged on the outer side surfaces of the long side layers and the wide side layers of the mold bags, in the construction process of filling mortar into a model, the positioning piles are arranged at the positions where the mold bags are required to be bottomed, then the positioning rings of the mold bags are sleeved on the positioning piles to realize positioning, the mold bags are filled with the mortar after being positioned through the positioning piles, and accurate bottoming of the mold bags is realized under the condition of self weight of the mortar.

This scheme is through connecting the holding ring on mould bag limit layer, has solved the mould bag because receive rivers and operate factors such as not convenient and influence the problem of hardly accurate positioning, and this kind of mode construction is convenient simultaneously, and efficiency is higher.

Furthermore, the outer side surfaces of three side layers in four side layers of the novel die bag are provided with positioning rings. The positioning rings are connected to the three side layers (two long side layers and one wide side layer or two wide side layers and one long side layer) of the mold bag, so that the accuracy of the sinking position of the mold bag after being filled with mortar can be further improved.

Under the great condition of rivers disturbance, though can realize the location through the holding ring on two adjacent limit layers, nevertheless there is the mould bag to receive the disturbance and produce the condition of fold unevenness, through connect the holding ring on the three limit layer of mould bag to accomplish the location through the spud pile, can guarantee that the mould bag fills the sunken location of mortar accurate, can also guarantee the roughness of mould bag.

Further, be provided with a plurality of holding rings at long limit layer and broadside layer outside, a plurality of holding rings are evenly arranged, and interval 3 meters between every holding ring on the long limit layer, interval 1 meter between every holding ring on the broadside layer.

As the preferred scheme of the utility model, the holding ring is bilayer structure.

The double-layer structure is that the positioning rings are respectively arranged at the two edges close to the upper layer and the lower layer at the same position. The two positioning rings overlap in the vertical direction.

Furthermore, the positioning ring is of a rectangular structure, and the size of the positioning ring is 200mm multiplied by 50 mm.

As the utility model discloses an optimal scheme, be connected with on long limit layer and the wide limit layer and add the muscle area, just the holding ring is fixed on this adds the muscle area.

Through arranging the reinforced belt and sewing the positioning ring on the reinforced belt, the mould bag can be stressed more uniformly in the process of filling mortar and sinking. When filling the mortar decline, the local holding ring can receive the tensile influence in clearance nature to produce too concentrated pulling force, there is the risk of damaging the mould bag, adds the muscle area through making up, and fixes all holding rings on adding the muscle area, during the local holding ring atress, can transmit the pulling force on adding the muscle area, thereby makes the whole limit layer of pulling force dispersion to the mould bag, effectively protects mould bag safety.

As the preferred scheme of the utility model, be provided with the partition wall muscle between the broadside layer of the relative both sides of novel mould bag. The partition wall ribs are a plurality of short bars respectively connected with the upper layer and the lower layer, gaps are formed among the short bars, and mortar can flow freely. The partition wall ribs are used for limiting the distance between the upper layer and the lower layer.

As the utility model discloses a preferred scheme, the partition wall muscle is many, and many partition wall muscle parallel arrangement.

Through arranging the partition wall muscle that is used for injecing two-layer distance about being used for between upper strata and lower floor two-layer, it is roughly the same to guarantee the space of mould bag in whole range, and the mortar is because receiving two-layer extrusion about and the dispersion, avoids filling the mortar in-process, owing to receive the influence of self gravity, leads to the mortar too to concentrate in certain department, realizes filling the evenly distributed of mortar.

Set up the partition wall muscle on the wide limit layer, also be exactly the partition wall muscle arranges along mould bag length direction, guarantees that the mould bag atress is more even.

As the utility model discloses a preferred scheme, partition wall muscle is arranged the department and is provided with the second and adds the muscle area, the second adds the muscle area and connects respectively on upper downside and lower floor's side, the partition wall muscle is fixed on the second of both sides adds the muscle area from top to bottom. Through arranging the second reinforced belt, the acting force acting on the partition wall is dispersed into the whole length range of the die bag through the second reinforced belt, and the die bag is prevented from being directly pulled by short strips.

As the utility model discloses a preferred scheme, it is a plurality of sand mouths of irritating, a plurality of to have arranged on the side on the upper strata irritate the sand mouth and evenly set up.

Further, the length range of the sand filling opening is 800-1200mm, and the diameter is 250-350 m. Preferably 1000mm in length and 300mm in diameter.

To current mould bag because the inaccurate cofferdam structure that leads to the construction to form in location lacks stability and reliability, correspondingly, the utility model also provides a mould bag cofferdam, including a plurality of mould bags that are filled with the mortar, this mould bag adopts as above-mentioned novel mould bag, it is a plurality of novel mould bag coincide forms cofferdam structure.

The existing cofferdam structure is not accurate to lead to stacking dislocation or unevenness due to the fact that the filled sand bags are positioned, so that the cofferdam structure is unstable, the reliability is poor, the problem is solved by the aid of the novel mould bag cofferdam formed by superposition of the mould bags in the scheme, and the cofferdam has good structural performance and reliability.

As the utility model discloses a preferred scheme, novel two-layer direct seam staggers the setting about the mould bag, and this mould bag cofferdam still includes the turn angle seam, the turn angle seam adopts the one deck to put crosswise the coincide with the one deck is indulged and is arranged.

The seam arrangement mode can ensure that the cofferdam has good compactness and stability.

As the preferred scheme of the utility model, the adjacent water side of this mould bag cofferdam is provided with the inoxidizing coating that is used for protecting novel mould bag.

Further, the protective layer is 220g/m²The braided bag, the braided bag is laid along novel mould bag from top to bottom to the cofferdam outside (near the waterside), and the protection mould bag avoids unusual and the direct irradiation of solar ultraviolet in the rivers to effectively avoid the mould bag to suffer damage, the braided bag bottom adopts little sand bag presser foot, fixes.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. positioning rings are arranged on the outer side surfaces of the long side layer and the wide side layer of the mold bag, in the construction process of sinking the mold filling mortar, positioning piles are arranged at the positions where the mold bag needs to be bottomed, then the positioning rings of the mold bag are sleeved on the positioning piles to realize positioning, the mold bag is positioned through the positioning piles and then filled with the mortar, and the mold bag realizes accurate bottoming under the condition of the self weight of the mortar;

2. the long edge layer and the wide edge layer are connected with the reinforced belts, all the positioning rings are fixed on the reinforced belts, and when the local positioning rings are stressed, the pulling force is transmitted to the reinforced belts, so that the pulling force is dispersed to the whole edge layer of the mold bag, and the safety of the mold bag is effectively protected;

3. the partition ribs used for limiting the distance between the upper layer and the lower layer are arranged between the upper layer and the lower layer, so that the space of the die bag in the whole range is approximately the same, mortar is dispersed due to extrusion of the upper layer and the lower layer, the phenomenon that the mortar is excessively concentrated at a certain position due to the influence of self gravity in the process of filling the mortar is avoided, and the uniform distribution of the filled mortar is realized;

4. the protective layer is arranged on the adjacent water side of the mould bag cofferdam, so that the abnormity in water flow and the direct irradiation of solar ultraviolet rays are avoided, and the mould bag is effectively prevented from being damaged.

Drawings

Fig. 1 is a schematic structural view of the novel mold bag of the present invention.

Fig. 2 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of fig. 1.

Fig. 4 is an enlarged schematic view of fig. 1 at S.

Fig. 5 is an enlarged schematic view at T in fig. 2.

Fig. 6 is a schematic structural diagram of the novel die bag provided with a second reinforced belt.

Fig. 7 is a structural schematic diagram of the novel die bag provided with a reinforced belt.

Fig. 8 is a schematic structural view of the middle mold bag cofferdam of the present invention.

Fig. 9 is a schematic layout of the direct seam of the upper and lower layers of the novel molded bag.

Fig. 10 is a schematic view of the corner seam arrangement of the novel molded bag.

The labels in the figure are: 1-upper layer, 2-lower layer, 3-long edge layer, 4-wide edge layer, 5-positioning ring, 6-ribbed belt, 7-partition rib, 7 a-short strip, 9-second ribbed belt, 10-sand filling opening, 11-protective layer, 12-small sand bag, L-length interval of seam of upper and lower layer mould bags.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

This embodiment provides a novel mould bag structure.

As shown in fig. 1-3, the novel mold bag of this embodiment includes an upper layer 1, a lower layer 2, a long side layer 3 and a wide side layer 4, each layer forms a closed bag-shaped structure by sewing, a bag-shaped inner cavity is used for filling mortar, and the outer side surfaces of the long side layer 3 and the wide side layer 4 on the adjacent side are connected with a positioning ring 5.

The novel mould bag can be made of geotextile or woven bags or other materials with a sealing function, and the positioning ring can be made of materials with the same main structure as the mould bag and can also be made of other materials with toughness and tensile strength.

As a preferred embodiment, the positioning rings 5 are disposed on the outer side surfaces of three side layers of the four side layers of the novel mold bag, and in this embodiment, the positioning rings are disposed on two long side layers 3 and one wide side layer 4, or the positioning rings 5 may be connected to two wide side layers 4 and one long side layer 3.

When specific implementation, in order to guarantee positioning accuracy, be provided with a plurality of holding rings 5 at

long limit layer

3 and 4 lateral surfaces on broadside layer, a plurality of holding rings 5 evenly arrange, nevertheless in order to avoid having the problem that efficiency is low excessively when overlapping the holding ring on the spud pile, the length of arranging of holding ring should not be too short yet, can adjust according to actual conditions, the interval between every holding ring on long limit layer 3 is decided to 3 meters in this embodiment, interval 1 meter sets up between every holding ring on broadside layer 4.

As one of the preferred embodiments, as shown in fig. 2-5, the positioning rings 5 may alternatively be of a double-layer structure, that is, the positioning rings 5 are respectively arranged at the same position near the two edges of the upper layer 1 and the lower layer 2, and the two positioning rings 5 are overlapped in the vertical direction so as to pass through the positioning pile in the same vertical direction.

The structural style of holding ring 5 is selected variously, can adopt ring structure, oval structure or other structural style that can telescope the spud, as an optimization, as shown in fig. 4, this embodiment adopts the holding ring of rectangle column structure, and sets up the holding ring size to 200mm 50mm, and the convenient cover of holding ring of rectangle column structure is on the spud.

As shown in fig. 2-3, a partition rib 7 is further disposed between the wide side layers 4 on two opposite sides of the novel mold bag of this embodiment, that is, the partition rib 7 is disposed along the length direction of the mold bag, the partition rib 7 is a plurality of short bars 7a respectively connected with the upper layer 1 and the lower layer 2, gaps are provided between the plurality of short bars 7a, and mortar can flow freely.

The partition ribs 7 may also take other structural forms, such as a net-like or diamond-like structure.

This embodiment adopts a plurality of short strips 7a to form and spanes mould bag length direction's whole partition wall muscle 7, has arranged many such whole partition wall muscle 7 on every mould bag, and the clearance between every partition wall muscle is confirmed according to operating condition, should not be too close or too loose, and many partition wall muscle 7 parallel arrangement.

The upper side surface of the upper layer 1 of the mold bag is provided with a plurality of sand filling openings 10, the sand filling openings 10 are uniformly arranged, and in the embodiment, the intervals between the sand filling openings are 3.5 multiplied by 3.5m and can also be arranged according to actual conditions. The sand pouring port has the length range of 800-1200mm and the diameter range of 250-350m, and preferably has the length of 1000mm and the diameter of 300 mm. Of course, at deeper water depths, the length of the sand filling opening should be adjusted to be longer.

The material of the sand filling opening is selected from the material with the same structure as the main body of the mould bag.

Example 2

This embodiment provides a more structurally optimized and rational implementation of the novel mold bag.

The novel mold bag of this example is substantially the same as example 1, except that:

the distinguishing point is as follows: as shown in fig. 7, the long side layer 3 and the wide side layer 4 of the present embodiment are connected with the reinforced strip 6, and the positioning rings 5 are fixed on the reinforced strip 6, in general, the reinforced strip 6 is arranged outside the three side layers of the mold bag according to the positions of the positioning rings 5, but in order to ensure the overall quality of the mold bag, the reinforced strip 6 is preferably arranged along the periphery of the mold bag to form a complete ring structure;

the reinforced belt 6 is made of the same material as the main body of the mould bag, for example, when geotextile is adopted, the reinforced belt is sewn outside the side layer of the mould bag;

when the retaining ring is double-layer structure, the reinforced belt covers the edge of the lower layer 2 from the edge of the upper layer 1, so that the upper and lower retaining rings 5 are all sewed on the reinforced belt 6.

The difference point is two: as shown in fig. 6, a second reinforcing strip 9 is arranged at the partition rib 7 of the present embodiment, the second reinforcing strip 9 is respectively connected to the lower side surface of the upper layer 1 and the upper side surface of the lower layer 2, that is, arranged at both sides of the mortar filling space, and the partition rib 7 is fixed on the second reinforcing strip 9 at both upper and lower sides;

the material of second reinforced belt 9 selects the same material as the main body of the mould bag, for example, when geotextile is adopted, second reinforced belt 9 is sewed outside the side layer of the mould bag.

Example 3

This example provides an embodiment of a bag-in-mold cofferdam.

As shown in fig. 8-10, the mold bag cofferdam includes a plurality of mold bags filled with mortar, the mold bags adopt the novel mold bag structure as in embodiment 1 or embodiment 2, and the plurality of novel mold bags are overlapped to form the cofferdam structure.

In this embodiment, the straight edge of the back water side of the cofferdam of the mold bag and the slope of the adjacent water side with a certain angle are provided, the slope is more complicated due to the water flow environment, and the angle of the slope can be irradiated as it is, thereby affecting the quality of the mold bag, the protective layer 11 for protecting the novel mold bag is arranged on one side of the slope, the protective layer of this embodiment adopts 220g/m²The braided bag, the braided bag is laid the cofferdam outside (near the water side) along side slope from the top down novel mould bag, and the inoxidizing coating bottom adopts 12 presser feet of little sand bag, fixes.

The protective layer can also be made of other shading and corrosion-resistant materials, for example, the protective layer can also be made of the same material as the mold bag, and in order to save cost, the protective layer for protecting the cofferdam can be formed by sewing leftover materials.

It is worth noting that the mould bag cofferdam is formed by overlapping a plurality of layers of mould bags, and each layer is also formed by sequentially splicing a plurality of mould bags, so that seams of the same layer, seams of the upper side and the lower side and corner seams exist, in order to ensure the overlapping quality, the seams of the same layer require the overstock amount of 0.2-0.4m, the direct seams of the upper layer and the lower layer of mould bags are staggered, the distance between the seams of the upper layer and the lower layer of mould bags is 2.5-5m, and the cross overlapping arrangement mode of one layer transversely and one layer longitudinally is adopted at the corner seams.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a novel mould bag, its characterized in that, includes upper strata (1), lower floor (2), long limit layer (3) and wide limit layer (4), and each layer forms confined bag column structure through making up, and the bag form inner chamber is used for filling the mortar, the wide limit layer (4) lateral surface of long limit layer (3) and adjacent side is connected with holding ring (5).

2. A new mould bag according to claim 1, characterised in that the retaining ring (5) is of double-layer construction.

3. A new pattern bag according to claim 1, characterized in that said long side layer (3) and said wide side layer (4) are connected with a ribbed belt (6), and said positioning ring (5) is fixed on the ribbed belt (6).

4. A novel mould bag according to any one of claims 1 to 3, characterised in that between the broad-side layers (4) on opposite sides of the novel mould bag there are provided partition ribs (7).

5. The novel mold bag according to claim 4, characterized in that the partition wall rib (7) is in a plurality, and the plurality of partition wall ribs (7) are arranged in parallel.

6. The novel mould bag as claimed in claim 4, wherein a second reinforcing strip (9) is arranged at the position where the partition wall rib (7) is arranged, the second reinforcing strip (9) is respectively connected to the lower side surface of the upper layer (1) and the upper side surface of the lower layer (2), and the partition wall rib (7) is fixed on the second reinforcing strip (9) at the upper side and the lower side.

7. A novel mould bag according to any one of claims 1 to 3, characterised in that a plurality of sand pouring openings (10) are arranged on the upper side of said upper layer (1), said plurality of sand pouring openings (10) being arranged uniformly.

8. A cofferdam comprising a plurality of mortar-filled mold bags, wherein the novel mold bags according to any one of claims 1 to 7 are used, and a cofferdam structure is formed by stacking a plurality of the novel mold bags.

9. The mold bag cofferdam of claim 8, wherein said novel mold bag is staggered in the direct seams of the upper and lower layers, and further comprising corner seams, said corner seams being arranged in a cross-lay and a longitudinal-lay overlapping arrangement.

10. Mould bag cofferdam according to claim 8 or 9, characterized in that the adjacent water side of the mould bag cofferdam is provided with a protective layer (11) for protecting the new mould bag.