Supporting structure for narrow and long riverway with deep silt soft soil distribution
By setting up an overall force-bearing system of support piles, crown beams, waist beams and cross braces on both sides of the river channel, the problems of high cost and poor stability of the cantilever support structure of the river channel were solved, and the stability and appearance of the river bank slope were improved.
Patent Information
- Application Number
- CN202422947671.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the existing technology, the construction cost of the cantilever support structure of the river channel is high and the operation effect is not ideal. The stability of the river bank slope is poor, especially in the narrow and long river channel with deep silt and soft soil, the structure deformation is obvious.
A support structure including the first and second rows of support pile units, crown beams, waist beams and cross braces is adopted. The support piles are embedded in the riverbed. The crown beams and waist beams are connected to the cross braces to form an overall force system to resist soil pressure and control deformation.
It improves the stability and safety of the river bank, controls the displacement and deformation of the structure, ensures the appearance of the river, reduces construction costs and enhances the integrity and stability of the support structure.
Smart Images
Figure CN223410125U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of river channel support structures, and in particular relates to a narrow and long river channel support structure with thick and soft silt soil distribution. Background Art
[0002] As the national economy continues to improve, flood control projects are one of the important measures to better protect the safety of people's property and regional economic development. In particular, with the frequent occurrence of extreme weather in cities, the improvement of river flood control standards is particularly urgent. Due to the needs of regional economic development, land resources are becoming increasingly scarce. The river bank slopes do not meet the conditions for slope land use. In addition, the water content of the strata around the river is high, there are many soft soil foundations, the geological conditions are complex, and the stability of the river bank slopes is extremely poor. Therefore, it is necessary to use river bank slope support structures for river bank slope protection. In the existing technology, river channel cantilever support structures are generally used, which have high construction costs, unsatisfactory operating effects, and obvious structural deformation. Utility Model Content
[0003] In view of the defects of the existing technology, the utility model provides a narrow and long river channel support structure with deep and soft soil distribution, which can effectively solve the above problems.
[0004] The technical solutions adopted in this utility model are as follows:
[0005] The utility model provides a narrow and long river channel support structure with deep and thick silt and soft soil distribution, comprising a first row of support pile units (1), a second row of support pile units (2), a first crown beam (3), a second crown beam (4), a temporary steel pipe support (5), a first waist beam (6), a second waist beam (7) and a cross brace (8);
[0006] The first row of supporting pile units (1) and the second row of supporting pile units (2) are respectively arranged opposite to each other along the river bank slope on both sides of the river; the first row of supporting pile units (1) and the second row of supporting pile units (2) each comprise a plurality of independent supporting piles; the bottom of each supporting pile of the first row of supporting pile units (1) and the second row of supporting pile units (2) is embedded in the riverbed;
[0007] The first crown beam (3) is integrally cast on the pile top of the first row of supporting pile units (1); the second crown beam (4) is integrally cast on the pile top of the second row of supporting pile units (2); and a plurality of temporary steel pipe supports (5) are connected at intervals along the width direction of the river channel between the first crown beam (3) and the second crown beam (4);
[0008] The first waist beam (6) and the second waist beam (7) are respectively arranged on the inner side of the first row of support pile units (1) and the inner side of the second row of support pile units (2); between the first waist beam (6) and the second waist beam (7), a plurality of the cross braces (8) are connected at intervals along the width direction of the river channel.
[0009] Preferably, the support piles of the first row of support pile units (1) are arranged in a straight line along the bank slope of the river channel on one side, and two adjacent support piles are in contact with each other;
[0010] The support piles of the second row of support pile units (2) are arranged in a straight line along the bank slope of the river on the other side, and two adjacent support piles are in contact with each other.
[0011] Preferably, the first crown beam (3) and the second crown beam (4) are both reinforced concrete crown beams.
[0012] Preferably, the first waist beam (6) and the second waist beam (7) are located at the designed bottom elevation of the river channel.
[0013] The utility model provides a narrow and long river channel support structure with deep and soft soil distribution, which has the following advantages:
[0014] The utility model provides a narrow and long river channel support structure with deep and soft soil distribution. The river channel support structure is conducive to improving the safety factor of river bank stability, controlling structural displacement and deformation, and ensuring the appearance of the river channel. The reinforced concrete crown beam allows the supporting piles to bear the force in a coordinated manner as a whole, resisting the soil pressure behind the piles, and increasing the stiffness of the pile top, which effectively controls the deformation of the pile top; the waist beam and cross brace connect the supporting piles on both sides of the river channel, so that the supporting piles on both sides form an integral structural system. The high stiffness value of the cross brace relative to the soft soil at the bottom of the river channel can effectively resist the soil pressure behind the piles, making the river channel support structure safer and more stable in soft soil areas and having good deformation control capabilities. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional diagram of a narrow and long river channel support structure with deep silt and soft soil provided by the utility model;
[0016] Figure 2 The utility model provides a cross-sectional view of a narrow and long river channel support structure with deep and thick silt and soft soil distribution.
[0017] Among them: 1. The first row of support pile units; 2. The second row of support pile units; 3. The first crown beam; 4. The second crown beam; 5. Temporary steel pipe support; 6. The first waist beam; 7. The second waist beam; 8. Cross bracing. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects solved by 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 only used to explain the present invention and are not intended to limit the present invention.
[0019] The utility model provides a narrow and long river channel support structure with deep and thick silt soft soil distribution, which can solve the problems of vertical bank slope support structure of river channels distributed in deep and thick soft soil areas being too long, too deformed and insufficiently stable. The utility model is a bank slope protection structure that is easy to construct, safe and reliable.
[0020] The utility model is a permanent river channel support solution of an upright bank protection structure supporting piles+cross braces.
[0021] See Figures 1 and 2 The utility model provides a narrow and long river channel support structure with deep and thick silt and soft soil distribution, which is used for vertical support of river channel slope with deep and thick silt and soft soil distribution, especially for supporting narrow and long river channels with regular and straight shapes, including a first row of support pile units 1, a second row of support pile units 2, a first crown beam 3, a second crown beam 4, a temporary steel pipe support 5, a first waist beam 6, a second waist beam 7 and a cross support 8;
[0022] On both sides of the river channel, the first row of supporting pile units 1 and the second row of supporting pile units 2 are arranged opposite to each other along the river channel bank slope; the first row of supporting pile units 1 and the second row of supporting pile units 2 each include multiple independent supporting piles; the bottom of each supporting pile of the first row of supporting pile units 1 and the second row of supporting pile units 2 is embedded in the riverbed; the supporting piles of the first row of supporting pile units 1 are arranged in a straight line along the river channel bank slope on one side, and the two adjacent supporting piles are in contact with each other; the supporting piles of the second row of supporting pile units 2 are arranged in a straight line along the river channel bank slope on the other side, and the two adjacent supporting piles are in contact with each other.
[0023] The first crown beam 3 is integrally cast on the top of the first row of supporting pile units 1; the second crown beam 4 is integrally cast on the top of the second row of supporting pile units 2; the first crown beam 3 and the second crown beam 4 are both reinforced concrete crown beams;
[0024] Between the first crown beam 3 and the second crown beam 4, a plurality of temporary steel pipe supports 5 are connected at intervals along the width direction of the river channel; therefore, the first crown beam 3 and the second crown beam 4 are supported and connected by the temporary steel pipe supports 5;
[0025] A first and second waist beam 6, 7, are installed inside the first row of support pile units 1 and the second row of support pile units 2. These beams are located at the designed bottom elevation of the river channel. Between these beams, multiple cross braces 8 are spaced along the width of the river channel. Thus, the waist beams on either side of the river channel bottom are connected to the support piles on either side of the channel. The beams on both sides of the channel are connected by the cross braces 8, forming a unified connection between the support piles on both sides. This provides excellent stability during and after channel excavation, ensuring the safety of the river bank slope, controlling deformation of the support piles, and maintaining the appearance of the river channel.
[0026] In practice, support piles are prefabricated pipe piles, cast-in-place piles, sheet piles, and other forms. Crown beams are reinforced concrete, while cross braces are reinforced concrete or steel pipe. Middle beams are reinforced concrete or section steel. Support piles are placed on the vertical banks on either side of the river and embedded in the riverbed for a certain length to protect the banks. A crown beam is installed at the top of the piles, connecting them to each individual support pile, allowing them to work together to resist the soil pressure behind the piles.
[0027] The temporary steel pipe supports are connected to the crown beam to control the deformation of the support piles during the construction period. Specifically, the temporary steel pipe supports have greater rigidity to resist the displacement and deformation of the tops of the support piles during river excavation or dredging.
[0028] The waist beam and cross bracing are placed at the bottom of the designed river channel to control deformation of the support structure and ensure the stability of the river bank slope. Specifically, the waist beam is placed at the designed river channel bottom elevation and connected to the support piles. Cross bracing is then constructed to connect the waist beams on both sides of the river channel. The greater rigidity of the cross bracing offsets the adverse effects of soft soil in the passive zone of the riverbed support piles. The soil pressure on both sides of the river channel is transmitted to each other through the cross bracing, forming an integrated force system to ensure the safe and stable operation of the river bank slope structure.
[0029] Therefore, the present invention provides a narrow and long river channel support structure for deep, silted, and soft soil. The structure comprises support piles, a crown beam, a waist beam, and a cross bracing structure. The support piles, as bank protection structures, are constructed on both sides of the river channel and embedded in the riverbed at a certain depth to protect the soil and prevent erosion. A reinforced concrete crown beam is provided on the top of the support piles to anchor and connect the independent support piles. Temporary steel pipe braces support the crown beam and control deformation of the support piles during construction. The waist beam is placed inside the riverbed support piles, and cross braces are arranged at intervals to connect the waist beams on both sides of the river channel. Therefore, this structure connects the independent support piles into a whole through the crown beam and waist beam, and connects the support piles on both sides through cross bracing to form an integrated structural system, which jointly resists the soil pressure on the river bank slope.
[0030] The utility model provides a narrow and long river channel support structure with deep and thick silt and soft soil distribution. The construction steps are as follows:
[0031] 1. Before construction, level the construction site, construct support piles on both sides of the river channel, and then construct reinforced concrete crown beams on the top of the support piles to anchor and connect the independent support piles;
[0032] 2. Construct temporary steel pipe supports 5 to support the crown beams on both sides of the river to improve the crown beam's ability to resist deformation, and then carry out river excavation or dredging work;
[0033] 3. After the river channel is excavated to the design elevation, the middle beams and cross braces 8 on both sides of the river channel are constructed at the bottom of the river channel; after the strength of the middle beams and cross braces 8 meets the design requirements, the temporary steel pipe braces 5 are removed.
[0034] The working principle of this utility model is as follows:
[0035] The construction of river channel support piles is used to prevent the river bank soil from sliding into the river channel and to resist the soil pressure behind the piles;
[0036] The reinforced concrete cap beam is constructed to connect the independent support piles into an integral pile row structure, so that the support piles form a whole to resist the soil pressure behind the piles, reduce the adverse effects of local geological mutations in the river channel, and improve the ability of the pile top to resist deformation;
[0037] Temporary steel pipe supports are used to prevent the adverse effects of excessive displacement of the support pile tops caused by excessive construction loads and increased soil pressure behind the piles during river channel excavation.
[0038] The design of the waist beam and cross brace at the riverbed is to connect the support piles on both sides of the river channel so that the support piles on both sides form an overall force-bearing structure system. The support piles bear the soil pressure behind the piles. The horizontal soil pressure is transmitted to the horizontal waist beam through the support piles, and then transmitted to the cross brace through the waist beam. Most of the soil pressure on both sides of the river channel is offset by the cross brace, and the cross brace has greatly improved stiffness compared to the soil pressure in the passive area of the river channel, which can effectively control the deformation of the pile body and ensure the safety of the river channel.
[0039] The utility model provides a narrow and long river channel support structure with deep and thick silt and soft soil distribution, which has the following advantages:
[0040] (1) Support piles are constructed on both sides of the river channel. The support piles can be prefabricated piles, cast-in-place piles, etc. They serve as support structures during the excavation or dredging process and after the river channel is formed to protect the river bank soil from sliding into the river channel. After the support piles are constructed, reinforced concrete crown beams are cast on the top of the support piles to connect the independent support piles on both sides into a whole. Then, the crown beams on both sides are connected by temporary steel pipe supports to form a temporary support system to ensure that the deformation of the support pile tops can be effectively controlled during the excavation and dredging process of the river channel. After the river channel is excavated to the designed bottom elevation, waist beams and cross braces are constructed to connect the independent support systems on both sides through the cross beams to form a permanent overall force-bearing system to ensure the stability of the river bank slope in the later stage and control the horizontal deformation of the support piles.
[0041] (2) The utility model adopts reinforced concrete crown beams to connect with the tops of the support piles by casting, and anchors the independent support piles together to increase the integrity of the support piles. Before the excavation of the river channel, temporary steel pipe supports are used to support and connect the crown beams on both sides (to be removed after the completion of the river channel support system), so as to achieve the purpose of controlling the deformation of the pile tops during the construction period; waist beams and cross braces are used to connect the support piles on both sides at the designed bottom elevation of the river channel to form an integral force-bearing structure system, so as to achieve the common force of the support structures on both sides. At the same time, the high rigidity of the cross brace can weaken the adverse effects of the slight deficiency of soft soil in the passive area of the support piles, protect the stability of the river bank slope, and control the deformation of the support piles.
[0042] (3) The utility model provides a narrow and long river channel support structure with deep silt and soft soil distribution. The river channel support structure is conducive to improving the safety factor of river bank stability, controlling structural displacement and deformation, and ensuring the appearance of the river channel. The reinforced concrete crown beam enables the supporting piles to bear the force in a coordinated manner as a whole, resisting the soil pressure behind the piles, and increasing the stiffness of the pile top, which effectively controls the deformation of the pile top; the waist beam and cross brace connect the supporting piles on both sides of the river channel, so that the supporting piles on both sides form an integral structural system. The high stiffness value of the cross brace relative to the soft soil at the bottom of the river channel can effectively resist the soil pressure behind the piles, making the river channel support structure safer and more stable in the soft soil area, and having a good ability to control deformation.
[0043] (4) The utility model combines the single support pile of the support structure and the support piles on both sides of the river channel into an integral load-bearing structure through the crown beam, waist beam and cross brace, realizing joint load-bearing. Compared with the cantilever structure support pile, the upright bank slope support system of the support pile + cross brace structure has wider applicability, higher safety, stricter control effect on the deformation of the support pile, which can effectively ensure the good appearance of the river channel, and the length of the support pile can be saved by more than 30%.
[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A narrow and long river channel support structure with thick and soft soil distribution, characterized by: It comprises a first row of supporting pile units (1), a second row of supporting pile units (2), a first crown beam (3), a second crown beam (4), a temporary steel pipe support (5), a first waist beam (6), a second waist beam (7) and a cross brace (8); The first row of supporting pile units (1) and the second row of supporting pile units (2) are respectively arranged opposite to each other along the river bank slope on both sides of the river; the first row of supporting pile units (1) and the second row of supporting pile units (2) each comprise a plurality of independent supporting piles; the bottom of each supporting pile of the first row of supporting pile units (1) and the second row of supporting pile units (2) is embedded in the riverbed; The first crown beam (3) is integrally cast on the pile top of the first row of supporting pile units (1); the second crown beam (4) is integrally cast on the pile top of the second row of supporting pile units (2); and a plurality of temporary steel pipe supports (5) are connected at intervals along the width direction of the river channel between the first crown beam (3) and the second crown beam (4); The first waist beam (6) and the second waist beam (7) are respectively arranged on the inner side of the first row of support pile units (1) and the inner side of the second row of support pile units (2); between the first waist beam (6) and the second waist beam (7), a plurality of the cross braces (8) are connected at intervals along the width direction of the river channel.
2. A narrow and long river channel support structure with thick and soft soil distribution according to claim 1, characterized in that: The support piles of the first row of support pile units (1) are arranged in a straight line along the bank slope of one side of the river channel, and two adjacent support piles are in contact with each other; The support piles of the second row of support pile units (2) are arranged in a straight line along the bank slope of the river on the other side, and two adjacent support piles are in contact with each other.
3. The narrow and long river channel support structure with thick and soft soil distribution according to claim 1 is characterized in that: The first crown beam (3) and the second crown beam (4) are both reinforced concrete crown beams.
4. The narrow and long river channel support structure with thick and soft soil distribution according to claim 1 is characterized in that: The first waist beam (6) and the second waist beam (7) are located at the designed bottom elevation of the river channel.