CN214573849U

CN214573849U - Pipeline mounting structure in soft soil layer

Info

Publication number: CN214573849U
Application number: CN202023289501.6U
Authority: CN
Inventors: 张耀文; 扶绍宇; 汪昌涛
Original assignee: Nanjing Water Supply And Drainage Engineering Design Institute Co ltd
Current assignee: Nanjing Water Supply And Drainage Engineering Design Institute Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-02
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a pipeline mounting structure in weak soil layer, it includes weak soil layer and pipeline, still includes and lays back coat, supporting layer and the overburden layer on weak soil layer from low to high in proper order, is equipped with a plurality of reinforcement subassemblies between weak soil layer and the supporting layer, links to each other through reinforcing the subassembly between weak soil layer and the supporting layer, and the upper surface of supporting layer is equipped with the bearing arc groove that is used for the bearing pipeline. This application has the effect of stabilizing the bearing to the pipeline, has reduced weak soil layer and has produced the probability of subsiding and lead to the pipeline fracture, has prolonged pipeline life's effect.

Description

Pipeline mounting structure in soft soil layer

Technical Field

The application relates to the field of pipeline installation, in particular to a pipeline installation structure in a soft soil layer.

Background

The high-speed development of cities puts higher demands on ground traffic and underground transportation, the ground traffic can improve traffic efficiency by constructing roads, overpasses and other measures, and the underground transportation uses a large number of various pipelines laid below the urban roads to convey oil, water, gas and other various solid and liquid so as to meet the energy requirements of various fields of urban economy.

The urban construction often meets open and underground rivers, and the ground near open and underground rivers is soft soil layer generally, and the ground bearing capacity is lower, and the water content is very high, and the installation to the pipeline among the correlation technique is usually directly to bury the pipeline in ground soil horizon.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the soil layers below the pipeline are soft soil layers such as silt and mucky soil, if the height of the covering soil on the pipeline is increased, the additional stress of the soft soil layers below the pipeline such as silt and mucky soil is increased, the soft soil is compressed to generate settlement, and when the thicknesses of the soft soil layers are not uniform, the uneven settlement can be generated, so that the pipeline is easy to break, the non-excavation repair cannot be adopted, the reverse work can only be performed again, the time and the labor are consumed, and the cost is wasted.

SUMMERY OF THE UTILITY MODEL

In order to improve when the additional stress of pipeline increases, soft soil can receive the compression and produce the settlement, leads to the cracked problem of pipeline, this application provides a pipeline mounting structure in soft soil layer.

The application provides a pipeline mounting structure in weak soil layer adopts following technical scheme:

the utility model provides a pipeline mounting structure in weak soil layer, includes weak soil layer and pipeline, still includes back up coat, supporting layer and the overburden layer of laying in proper order on weak soil layer from low to high, be equipped with a plurality of reinforcement subassemblies between weak soil layer and the supporting layer, link to each other through the reinforcement subassembly between weak soil layer and the supporting layer, the upper surface of supporting layer is equipped with the bearing arc groove that is used for the bearing pipeline.

By adopting the technical scheme, during construction, the reinforcement layer is laid on the soft soil layer to strengthen the structural strength of the soft soil layer, then the support layer is laid on the reinforcement layer to further strengthen the structural strength of the soft soil layer, at the moment, the pipeline can be arranged in the bearing arc groove, after the pipeline is installed, soil is backfilled on the pipeline to form a soil covering layer, and finally, the pipeline is installed; when the reinforcing layer and the supporting layer are laid, the reinforcing layer is utilized to fixedly connect the soft soil layer and the supporting layer, so that the stability of the supporting layer for supporting the pipeline is improved; the pipeline installation structure formed by the structure can stably support the pipeline through the cooperation of the reinforcing layer, the supporting layer and the reinforcing assembly, avoids the phenomenon of fracture of the pipeline caused by sludge generated in a soft soil layer and sedimentation, and prolongs the service life of the pipeline.

Optionally, the reinforcing layer comprises a gravel cushion layer laid on the soft soil layer.

Through adopting above-mentioned technical scheme, through the rubble bed course, strengthened the structural strength in weak soil layer, and utilize the rubble bed course can fill and level up the surface in weak soil layer, the follow-up construction of being convenient for.

Optionally, the supporting layer includes a concrete layer poured on the gravel cushion layer, and the supporting arc groove is located on the upper surface of the concrete layer.

Through adopting above-mentioned technical scheme, concrete layer has good structural strength and bearing capacity, can stabilize the bearing to the pipeline.

Optionally, the reinforcing component comprises a plurality of wooden piles, the bottom ends of the wooden piles penetrate through the reinforcing layer and extend into the soft soil layer, the top ends of the wooden piles penetrate through the reinforcing layer and extend into the supporting layer, a thick gravel layer is paved between the wooden piles, and the thick gravel layer is located between the reinforcing layer and the supporting layer.

Through adopting above-mentioned technical scheme, utilize thick rubble layer, can keep vertical state with the stake, and when the installation stake, must not get rid of the bark on the surface of stake, increased the frictional force between stake and weak soil layer, back up coat, the supporting layer, improved the stability to the pipeline support.

Optionally, the reinforcing assembly includes a plurality of water permeable bricks laid on the upper surface of the reinforcing layer, and a reinforcing column located between two adjacent water permeable bricks, the cross-sectional area of the reinforcing column decreases from low to high, the bottom end of the reinforcing column penetrates through the reinforcing layer and extends into the weak soil layer, the top end of the reinforcing layer extends into the supporting layer, and an anti-deviation component for keeping the reinforcing column stable is arranged in the supporting layer.

Through adopting above-mentioned technical scheme, utilize the brick that permeates water to keep the anchor post stable, utilize simultaneously to prevent inclined to one side spare with the anchor post and keep vertical state, reduced because of producing silt in the weak soil layer, and lead to the anchor post to take place the phenomenon of skew, and then can be to concrete layer stabilizing support through the anchor post, improved the stability to the pipeline support.

Optionally, the anti-deviation component includes a protective cover sleeved on the top of the reinforcing column, guide pillars uniformly distributed on the inner side wall of the protective cover, a spring sleeved on the guide pillars, and a guide sleeve slidably disposed on the guide pillars, one end of the spring is connected with the inner side wall of the protective cover, the other end of the spring is connected with the guide sleeve, an end wall of the guide sleeve, which is opposite to the spring, is provided with an insertion block, and a slot for inserting the insertion block is formed in the side wall of the reinforcing column.

Through adopting above-mentioned technical scheme, utilize the elasticity of spring, be located the position on the guide pillar with the guide pin bushing and remain stable, and then can stably insert the inserted block and establish in the slot, and then can keep vertical state with the anchor post, reduced because of producing silt in the weak soil layer, and lead to the anchor post to take place the phenomenon of skew, and then can be to concrete layer stable support through the anchor post, improved the stability of pipeline support.

Optionally, a waterproof steel plate is arranged between the opposite side walls of the adjacent protective covers, and the lower surfaces of the waterproof steel plates are abutted to the upper surfaces of the water permeable bricks.

Through adopting above-mentioned technical scheme, the setting of waterproof steel sheet avoids the water in the weak soil layer to ooze to the concrete layer and permeate water between the brick by low to high anti-seepage, plays waterproof effect, and through setting up waterproof steel sheet, has strengthened the structural strength to the support of concrete layer, and then has improved the stability to the pipeline support.

Optionally, the reinforcement post is equipped with a plurality of ground muscle of grabbing on being located the lateral wall in the weak soil layer of equipartition, the slope of ground muscle of grabbing sets up the lateral wall at the reinforcement post, the lower one end of grabbing the ground muscle links to each other with the lateral wall of reinforcement post, the higher one end of grabbing the ground muscle is inserted and is established in the weak soil layer.

Through adopting above-mentioned technical scheme, grab the setting of ground muscle, increased the area of contact between reinforcement post and the weak soil layer, improved the stability that the reinforcement post was inserted and is established in the weak soil layer.

Optionally, two adjacent relative lateral walls of the brick that permeates water all incline and are equipped with impervious face, the lower one end of impervious face is towards the back up coat, the higher one end of impervious face is towards the supporting layer, two enclose between the impervious face and form the accommodation space who holds the reinforcement post, the brick that permeates water is located the lateral wall of impervious face and is equipped with wear-resisting pad and hugs closely at the lateral wall of reinforcement post.

Through adopting above-mentioned technical scheme, because the cross-sectional area of reinforcement post increases progressively from high to low, through setting up impervious face, increased the area of contact between brick and the reinforcement post lateral wall of permeating water, utilize resistant cushion, increased the frictional force between brick and the impervious face of permeating water to keep vertical state with the reinforcement post, and then strengthened the support effect of reinforcement post to concrete layer.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pipeline can be stably supported by matching the reinforcing layer, the supporting layer and the reinforcing component, so that the phenomenon of fracture of the pipeline caused by sludge and settlement generated in a soft soil layer is avoided, and the service life of the pipeline is prolonged;

2. the thick gravel layer is utilized to keep the wooden pile in a vertical state, and when the wooden pile is installed, barks on the surface of the wooden pile are not removed, so that the friction force between the wooden pile and the soft soil layer, the reinforcing layer and the supporting layer is increased, and the stability of pipeline support is improved;

3. utilize the elasticity of spring, be located the position on the guide pillar with the guide pin bushing and keep stable for the inserted block is stably inserted and is established in the slot, and then can keep vertical state with the reinforcement post, has reduced because of producing silt in the weak soil layer, and lead to the phenomenon that the reinforcement post takes place the skew, and then can stabilize the support to concrete layer through the reinforcement post, has improved the stability of supporting the pipeline.

Drawings

Fig. 1 is a sectional view of a pipe installation structure in a soft soil layer according to an embodiment.

Fig. 2 is a sectional view of a pipe installation structure in a soft soil layer according to a second embodiment.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Description of reference numerals: 1. a soft soil layer; 2. a pipeline; 3. a reinforcement layer; 31. a gravel cushion layer; 4. a support layer; 41. a concrete layer; 42. supporting the arc groove; 5. covering a soil layer; 6. a reinforcement assembly; 61. piling wood; 62. a thick crushed stone layer; 7. water permeable bricks; 8. reinforcing columns; 9. an anti-deviation piece; 91. a protective cover; 92. a guide post; 93. a spring; 94. a guide sleeve; 95. inserting a block; 96. a slot; 10. a waterproof steel plate; 11. grabbing ground ribs; 12. a impervious surface; 13. a wear-resistant cushion.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses pipeline mounting structure in soft soil layer.

Example 1

Referring to fig. 1, the pipeline installation structure in the soft soil layer comprises a soft soil layer 1, a strengthening layer 3, a supporting layer 4 and a covering soil layer 5 which are sequentially arranged from low to high, a plurality of strengthening components 6 are arranged between the soft soil layer 1 and the supporting layer 4, the connection strength between the soft soil layer 1 and the supporting layer 4 is strengthened through the strengthening components 6, and the bearing capacity of the pipeline 2 is improved.

The reinforcement layer 3 is a gravel cushion 31 laid on the upper surface of the soft soil layer 1, the surface of the soft soil layer 1 can be filled and leveled by using the gravel cushion 31, and the structural strength of the soft soil layer 1 is enhanced.

The supporting layer 4 is a concrete layer 41 poured on the gravel cushion 31, the concrete layer 41 has good structural strength and compression resistance, a bearing arc groove 42 is formed in the upper surface of the concrete layer 41, the pipeline 2 is placed in the bearing arc groove 42, and after the pipeline 2 is placed, a covering soil layer 5 is laid on the pipeline 2, so that the pipeline 2 is finally installed; adopt above-mentioned structure, through the intensity that increases the bearing structure to pipeline 2, can install pipeline 2 stable in bearing arc groove 42, reduced weak soil layer 1 and subsided and lead to pipeline 2 cracked probability to appear, prolonged pipeline 2's life.

Referring to fig. 1, the reinforcing assembly 6 includes a plurality of wooden piles 61, the bottom ends of the wooden piles 61 penetrate through the gravel cushion 31 and extend into the soft soil layer 1 by manual piling or excavator piling, the top ends of the wooden piles 61 need to be kept on the same horizontal straight line during piling, after the wooden piles 61 are piled, a thick gravel layer 62 is laid and tamped between two adjacent wooden piles 61 so as to keep the wooden piles 61 in a vertical state, then concrete is poured on the thick gravel layer 62 to form a concrete layer 41, and the top ends of the wooden piles 61 are fixedly embedded in the concrete layer 41, and by arranging the plurality of wooden piles 61, the concrete layer 41 is well supported so as to stably support the pipeline 2.

In this embodiment, the timber pile 61 is selected as fresh pine, and when the timber pile 61 is installed, the bark on the surface of the timber pile 61 cannot be removed, so that the friction force between the timber pile 61 and the soft soil layer 1, the gravel cushion 31 and the concrete layer 41 is increased.

The implementation principle of the embodiment 1 is as follows: the method comprises the steps of filling the surface of a soft soil layer 1 by using a gravel cushion layer 31, then penetrating wood piles 61 through the gravel cushion layer 31 and driving the wood piles into the soft soil layer 1, then paving a thick stone layer on the gravel cushion layer 31, keeping the distance between two adjacent wood piles 61 stable by using the thick stone layer 62, then pouring concrete on the thick stone layer 62, reserving a bearing arc groove 42 on the surface of the concrete layer 41 while pouring the concrete, forming the concrete layer 41 after the concrete is formed, installing a pipeline 2 in the bearing arc groove 42 at the moment, finally backfilling soil on the pipeline 2 after the pipeline 2 is installed, forming a soil covering layer 5, and finally completing the installation of the pipeline 2.

Example 2

Referring to fig. 2, the present embodiment is different from embodiment 1 in the structure of the reinforcing member 6. The reinforcing component 6 comprises a plurality of water permeable bricks 7 laid on the upper surface of the gravel cushion 31, opposite side walls of every two adjacent water permeable bricks 7 are obliquely provided with impervious surfaces 12, a mounting space is formed between every two impervious surfaces 12 in a surrounding mode, a reinforcing column 8 is inserted into the mounting space, the longitudinal section of the reinforcing column 8 is in a conical arrangement, and the cross section area of the reinforcing column 8 is gradually increased from high to low.

During installation, the reinforcing column 8 is driven by manpower or an excavator to enable the bottom end of the reinforcing column 8 to penetrate through the broken stone cushion layer 31 and extend into the soft soil layer 1, when the pile is driven, the top ends of the reinforcing columns 8 need to be kept on the same horizontal straight line, after the pile is driven, a plurality of water permeable bricks 7 are laid on the broken stone cushion layer 31 to enable the impervious surface 12 to be aligned to the side wall of the reinforcing column 8, the side wall, located on the impervious surface 12, of each water permeable brick 7 is provided with a wear-resistant cushion, the wear-resistant cushions are made of rubber materials and have good wear-resistant effect, friction force between the reinforcing column 8 and the side wall of each water permeable brick 7 is further increased, and the reinforcing column 8 can be kept stable through the water permeable bricks 7; then concrete is poured on the upper surface of the water permeable brick 7 to form a concrete layer 41, so that the top end of the reinforcing column 8 is embedded in the concrete layer 41, the concrete layer 41 is connected with the soft soil layer 1 through the reinforcing column 8, the concrete layer 41 can be stably supported through the reinforcing column 8, and the stability of supporting the pipeline 2 is improved.

Referring to fig. 2, for further strengthening the stability that the anchor post 8 is located weak soil layer 1, the equipartition is equipped with a plurality of ground muscle 11 of grabbing on the lateral wall that the anchor post 8 is located weak soil layer 1, the slope setting of ground muscle 11 of grabbing, the lower one end of ground muscle 11 links to each other with the lateral wall of anchor post 8, the higher one end of ground muscle 11 of grabbing is inserted and is established in weak soil layer 1, the setting of ground muscle 11 of grabbing, the area of contact of soil in anchor post 8 and the weak soil layer 1 has been increased, the probability that the anchor post 8 takes place the slope has been reduced, make anchor post 8 stably support and establish in weak soil layer 1.

Referring to fig. 2 and 3, when groundwater is much, soil in the soft soil layer 1 is likely to generate sludge, which may cause the reinforcing columns 8 to settle or generate a deviation phenomenon, and a deviation preventing member 9 for stabilizing the reinforcing columns 8 is provided in the concrete layer 41.

The deviation preventing part 9 comprises a protective cover 91 sleeved on the top of the reinforcing column 8, the bottom wall of each protective cover 91 is abutted to the upper surface of the corresponding permeable brick 7 layer, a waterproof steel plate 10 is fixedly welded between the opposite side walls of every two adjacent protective covers 91, the lower surface of each waterproof steel plate 10 is abutted to the upper surface of the corresponding permeable brick 7, and the waterproof steel plates 10 are arranged to block water in the lower layer from permeating between the permeable bricks 7 and the concrete layer 41; when concrete is poured, the concrete can be directly poured on the protective cover 91 and the waterproof steel plate 10, and the supporting strength of the concrete layer 41 is enhanced by the protective cover 91 and the waterproof steel plate 10, so that the pipeline 2 is stably supported.

The inside wall of protection casing 91 is equipped with a plurality of guide pillars 92, a plurality of guide pillars 92 all follow the circumference array of reinforcement post 8, the one end fixed connection of guide pillar 92 is at the inside wall of protection casing 91, the other end of guide pillar 92 is towards the lateral wall of reinforcement post 8, the cover is equipped with spring 93 on the guide pillar 92, the one end of spring 93 links to each other with the inside wall of protection casing 91, the other end of spring 93 is connected with guide pin bushing 94, guide pin bushing 94 slides on guide pillar 92, the one end fixedly connected with inserted block 95 of guide pin bushing 94 dorsad spring 93, the lateral wall of reinforcement post 8 is equipped with and supplies inserted block 95 male slot 96, utilize the elasticity of spring 93, interval between guide pin bushing 94 and the inside wall of protection casing 91 keeps stable, and then reduced the probability that reinforcement post 8 takes place the skew, so that reinforcement post 8 can keep vertical state, can be to concrete layer 41 steady support, and then improved the stability of pipeline 2 support.

The implementation principle of the embodiment 2 is as follows: during construction, firstly, the bottom of each reinforcing column 8 is driven into the soft soil layer 1, so that the top ends of the plurality of reinforcing columns 8 are located on the same horizontal straight line, the protective cover 91 is erected above the soft soil layer 1, the position of the guide sleeve 94 on the guide column 92 is kept stable through the elasticity of the spring 93, the insert block 95 can be stably inserted into the slot 96, and the reinforcing columns 8 can be stably kept.

Meanwhile, the contact area between the reinforcement column 8 and the soft soil layer 1 is increased through the plurality of ground grabbing ribs 11, the reinforcement column 8 can be kept stable, the broken stone cushion layer 31 is paved on the soft soil layer 1, the soft soil layer 1 is filled, the waterproof steel plate 10 is welded between the two adjacent protective covers 91, the lower surface of the waterproof steel plate 10 is abutted to the upper surface of the broken stone cushion layer 31, concrete is poured on the waterproof steel plate 10 and the protective covers 91, the concrete layer 41 is formed after the concrete is cured and formed, and the protective covers 91 are embedded in the concrete layer 41, so that the bearing force of the concrete layer 41 is enhanced.

In the process of pouring concrete, a bearing arc groove 42 is reserved on the upper surface of the concrete layer 41, so that the pipeline 2 is installed in the bearing arc groove 42, finally, soil is back filled on the pipeline 2 to form a soil covering layer 5, and finally, the installation of the pipeline 2 is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pipeline mounting structure in weak soil layer, includes weak soil layer (1) and pipeline (2), its characterized in that: still include reinforcement layer (3), supporting layer (4) and the overburden (5) of laying in proper order on weak soil layer (1) from low to high, be equipped with a plurality of reinforcement subassemblies (6) between weak soil layer (1) and supporting layer (4), link to each other through reinforcement subassembly (6) between weak soil layer (1) and supporting layer (4), the upper surface of supporting layer (4) is equipped with bearing arc groove (42) that are used for bearing pipeline (2).

2. The structure for installing pipes in soft soil layers according to claim 1, wherein: the reinforcing layer (3) comprises a gravel cushion layer (31) paved on the soft soil layer (1).

3. The structure for installing pipes in soft soil layers according to claim 2, wherein: the supporting layer (4) comprises a concrete layer (41) poured on the gravel cushion layer (31), and the bearing arc groove (42) is located on the upper surface of the concrete layer (41).

4. The structure for installing pipes in soft soil layers according to claim 1, wherein: the reinforcing component (6) comprises a plurality of wood piles (61), the bottom end of each wood pile (61) penetrates through the reinforcing layer (3) and stretches into the soft soil layer (1), the top end of each wood pile (61) penetrates through the reinforcing layer (3) and stretches into the supporting layer (4), a thick gravel layer (62) is paved between the wood piles (61), and the thick gravel layer (62) is located between the reinforcing layer (3) and the supporting layer (4).

5. The structure for installing pipes in soft soil layers according to claim 1, wherein: the reinforcing component (6) comprises a plurality of water permeable bricks (7) paved on the upper surface of the reinforcing layer (3) and a reinforcing column (8) arranged between two adjacent water permeable bricks (7), the cross sectional area of the reinforcing column (8) is gradually reduced from low to high, the bottom end of the reinforcing column (8) penetrates through the reinforcing layer (3) and extends into the soft soil layer (1), the top end of the reinforcing layer (3) extends into the supporting layer (4), and a deviation preventing part (9) used for keeping the reinforcing column (8) stable is arranged in the supporting layer (4).

6. The structure for installing pipes in soft soil layers according to claim 5, wherein: the anti-deviation piece (9) comprises a protective cover (91) sleeved at the top of the reinforcing column (8), guide pillars (92) uniformly distributed on the inner side wall of the protective cover (91), a spring (93) sleeved on the guide pillars (92), and guide sleeves (94) arranged on the guide pillars (92) in a sliding manner, wherein one end of the spring (93) is connected with the inner side wall of the protective cover (91), the other end of the spring (93) is connected with the guide sleeves (94), an insertion block (95) is arranged on the end wall, back to the spring (93), of one side of each guide sleeve (94), and the side wall of the reinforcing column (8) is provided with a slot (96) for the insertion block (95) to be inserted.

7. The structure for installing pipes in soft soil layers according to claim 6, wherein: and a waterproof steel plate (10) is arranged between the opposite side walls of the adjacent protective cover (91), and the lower surface of the waterproof steel plate (10) is abutted to the upper surface of the water permeable brick (7).

8. The structure for installing pipes in soft soil layers according to claim 5, wherein: the reinforcing column (8) is arranged on the side wall of the soft soil layer (1) and is uniformly provided with a plurality of ground grabbing ribs (11), the ground grabbing ribs (11) are obliquely arranged on the side wall of the reinforcing column (8), the lower end of each ground grabbing rib (11) is connected with the side wall of the reinforcing column (8), and the higher end of each ground grabbing rib (11) is inserted into the soft soil layer (1).

9. The structure for installing pipes in soft soil layers according to claim 5, wherein: it is adjacent two the relative lateral wall of brick (7) of permeating water all inclines to be equipped with impervious face (12), the lower one end of impervious face (12) is towards back up coat (3), the higher one end of impervious face (12) is towards supporting layer (4), two enclose between impervious face (12) and close to be formed with the arrangement space who holds reinforcement column (8), the lateral wall that brick (7) of permeating water are located impervious face (12) is equipped with wear-resisting pad and hugs closely the lateral wall at reinforcement column (8).