A ship lock passing active fault structure based on flexible absorption concept and a construction method thereof

Abstract

The application provides a ship lock passing through an active fault structure based on a flexible absorption concept, and a construction method, which comprises lock chamber segments of different lengths and connecting segments between the segments. The connecting segments are composed of an outer surface sealing coating, an upper flexible foam plate, a multi-directional flexible concave corrugated steel plate, a lower flexible foam plate, a pebble layer, an anti-seepage layer and a leveling layer from top to bottom; a square corrugated pipe is used to connect the water conveying corridors at the connecting segments; the multi-directional flexible concave corrugated steel plate is the main part for absorbing the dislocation amount, a plurality of U-shaped corrugations are arranged in the axial direction, the vertical and horizontal steel plates in the cross section are connected by S-shaped corrugations, the corrugated plate has a large displacement compensation capacity, and can meet the spatial displacement requirement of the structure; the structure is provided with a plurality of waterproof and water isolation measures, and is combined with rigidity and flexibility, can adapt to the long-term small deformation of the fault, can reduce the large deformation caused by earthquake damage, and the damage is concentrated in the connecting segments, so that the damage of the main structure of the ship lock is avoided, the post-repair is facilitated, and the safe and stable operation of the ship lock when passing through the active fault is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of waterway transportation engineering, and relates to an artificial waterway technology, in particular to a ship lock active fault crossing structure and method based on a flexible absorption concept. BACKGROUND

[0002] With the increasing demand for global water resource distribution and regional economic development, waterway transportation, as an important transportation mode, has been rapidly developed. Inland river shipping is a key component of waterway transportation and plays an irreplaceable role in promoting regional economic exchanges and material circulation. However, in the construction and long-term operation process of long-distance artificial waterways, it is usually difficult to avoid encountering adverse geology, and the crossing of active faults by ship locks is a difficult technical problem to overcome, and there is currently no relevant research.

[0003] Active faults pose a serious threat to the buildings crossing them due to their potential dislocation risk. Ship locks, as the throat facilities of inland waterways, will directly threaten the integrity and safety of the ship lock structure when the active fault undergoes slow creep movement under the action of huge extrusion and pulling force, and the permanent deformation produced in a century can be up to several meters, which brings great challenges to the stable operation of the ship lock.

[0004] Active faults will break the stress balance of the ship lock structure, causing local stress concentration, which may lead to structural cracking, tilting, affecting the normal use and appearance of the ship lock, or even structural damage, sliding and collapse, not only interrupting the waterway transportation, but also causing serious economic losses and casualties. For water structures such as ship locks, due to their special operating environment, the damage caused by fault activity is more significant. The occurrence of cracks will cause water leakage in the ship lock structure, aggravate the erosion inside the structure, shorten the service life, and reduce the safety; at the same time, water penetration into the foundation or backfill soil will also weaken the bearing capacity of the foundation, further aggravate the uneven settlement of the foundation and structural deformation, and form a vicious cycle, which will cause devastating damage to the ship lock.

[0005] Therefore, in order to ensure the safety and stability of the ship lock under complex geological conditions, according to the stress and deformation characteristics of the ship lock structure, it is urgent and necessary to propose appropriate measures, which is of great significance to improve the reliability of waterway transportation and ensure the safety of life and property. SUMMARY

[0006] In view of the above problems, the ship lock over active fault structure based on the flexible absorption design concept can ensure the safe and stable operation of the ship lock structure under the tension, compression and shear effect to a certain extent. Through the combination of rigidity and flexibility, it can adapt to various types of fault dislocation deformation, thereby effectively dealing with the safety problems encountered by the ship lock when crossing the active fault, and providing an important reference for future part of the active fault channel engineering.

[0007] In order to realize the above technical features, the purpose of the present application is realized as follows: a ship lock over active fault structure based on the flexible absorption design concept, the ship lock chamber is divided into multiple segments of different lengths in the active fault area, including long segment chambers and short segment chambers, the long segment chambers and the short segment chambers are alternately connected through connecting segments, and the connecting segments are used to absorb the displacement of the active fault.

[0008] Preferably, the length of the long segment chamber and the short segment chamber is 10-100m.

[0009] Preferably, the connecting segment is composed of an outer surface closed coating, an upper flexible foam plate, a multi-directional flexible concave corrugated steel plate, a lower flexible foam plate, a pebble thick cushion layer, an anti-seepage layer and a concrete leveling layer from top to bottom.

[0010] Preferably, the outer surface closed coating is made of 5-10cm asphalt mastic filler.

[0011] Preferably, the upper flexible foam plate and the lower flexible foam plate are made of modified polystyrene foam composite board.

[0012] Preferably, the pebble thick cushion layer is selected from pebble particles with a diameter of 50-80mm, and the laying thickness is 0.3-0.7m.

[0013] Preferably, the anti-seepage layer is a geomembrane with plastic film as the anti-seepage base material, and the related parameter standard is not less than 150g / m 2 + 0.3mm + 150g / m 2 .

[0014] Preferably, the concrete leveling layer is made of asphalt concrete, and a joint is arranged between the concrete leveling layer and the two side plates, and the thickness is not less than 1 / 2 of the thickness of the bottom plate.

[0015] Preferably, the multi-directional flexible concave corrugated steel plate is an integral structure, and a plurality of U-shaped corrugated segments are arranged along the water flow direction of the ship lock chamber; the vertical and horizontal steel plates in the cross section of the multi-directional flexible concave corrugated steel plate are connected by S-shaped corrugated connecting segments.

[0016] Preferably, the long section lock chamber and the short section lock chamber are respectively in an integral structure, and each part is independently arranged and respectively comprises a bottom plate, two wide grooves are arranged at both ends of the bottom plate in the longitudinal direction, the ship lock section is divided into three pouring blocks, and the two side piers are poured to the top, and then the concrete backfilling of the wide grooves is performed in the low temperature season, so that the integral structure is formed.

[0017] Preferably, a water conveying corridor is arranged in the bottom plate, the connecting section cuts off the water conveying corridor, and the connecting section is connected to the water conveying corridor through a square bellows at a corresponding position.

[0018] Preferably, a plurality of U-shaped corrugated sections are arranged in the axial direction of the square bellows, square straight pipe sections are connected to the two sides of the U-shaped corrugated sections, a gradually expanding flared section is arranged at the other end of the square straight pipe section, the two end portions of the gradually expanding flared section are folded outward, and are embedded in the external concrete, and the water stop material with a density of 100-1600 kg / m 3 is filled in the embedded port in the concrete.

[0019] Preferably, the square bellows is filled with a flexible foaming agent or a foam board outside the connecting section, so as to provide displacement for the deformation of the U-shaped corrugated section.

[0020] Preferably, a circular arc chamfer is arranged on the side pier overflow side at the joint of the long section lock chamber and the short section lock chamber and the connecting section, and the radius of the circular arc chamfer is 1 / 4 of the axial length of the short section lock chamber.

[0021] On the other hand, a ship lock operation method through an active fault structure based on a flexible absorption concept is provided, and the ship lock operation method through the active fault structure based on the flexible absorption concept is used to realize the method, which comprises the following steps:

[0022] 1) Initial stage:

[0023] When the ship lock is just put into use, the creep dislocation amount of the active fault is small, at this time, the overall structure of the ship lock can effectively absorb and disperse this small dislocation amount due to the design that the long section lock chamber and the short section lock chamber are alternately connected and the flexible connecting section is arranged, so that the overall structure does not have obvious deformation, and the ship lock can run stably to ensure the smooth navigation of the ship.

[0024] 2) Operation stage:

[0025] With the increase of the operation life of the ship lock, the creep dislocation amount of the active fault gradually increases, and in this stage, the ship lock structure begins to play its advantage of flexible absorption, and the axis of the long section lock chamber and the short section lock chamber can be adapted to the dislocation of the fault through a small angle of deflection and swing, so as to prevent the structure from being seriously damaged; specifically including:

[0026] 2.1) Deflection and swing of lock chamber segments: Due to its longer length, the long segment lock chamber can stably withstand large extrusion forces; while the short segment lock chamber can more easily deflect under extrusion, thus driving the long segment lock chamber to swing, absorbing and dispersing the fault displacement;

[0027] 2.2) Deformation of connecting segments: With the deflection and swing of the lock chamber segments, the connecting segments also begin to deform, at which point the parts of the connecting segments may crack and the gravel may rub, thus helping to release the stress within the structure;

[0028] 2.3) Deformation of multi-directional flexible concave corrugated steel plates: In the connecting segments, the multi-directional flexible concave corrugated steel plates are the main parts that absorb displacement, and the S-shaped corrugated segments on the multi-directional flexible concave corrugated steel plates can provide displacement compensation in the tilt direction, and by decomposing the displacement, the structure has the ability to compensate for tension and compression in the vertical direction and shear in the horizontal direction, thus more effectively absorbing and dispersing the fault displacement, ensuring the normal operation of the structure;

[0029] 3) Over-service or earthquake conditions:

[0030] When the ship lock structure is over-served or the surface stick-slip displacement is induced by an earthquake, the fault displacement will increase dramatically, and in this extreme case, the multi-directional flexible concave corrugated steel plates may fail due to excessive deformation, at which point the anti-seepage layer in the ship lock structure will play a role to prevent the water in the lock from infiltrating, thus ensuring that the basic function of the ship lock is not affected; specifically including:

[0031] 3.1) Geomembrane anti-seepage: After the multi-directional flexible concave corrugated steel plates fail, the geomembrane at the bottom of the connecting segment will function as the anti-seepage material at the bottom of the bottom plate, and the geomembrane has anti-seepage properties that can effectively prevent the water in the lock from infiltrating into the foundation or backfill soil, thus avoiding the weakening of the bearing capacity of the foundation and the intensification of the deformation of the structure;

[0032] 3.2) Pebble thick cushion shock absorption: As part of the connecting segment, the pebble thick cushion not only provides shock absorption and isolation for the upper structure, but also reduces the impact and damage to the structure in extreme earthquake conditions, and the size and thickness of the pebble thick cushion are designed to ensure that it can effectively absorb and disperse the energy of the seismic waves;

[0033] 4) Structure adjustment and optimization:

[0034] By adjusting the number of short segment lock chambers, the wave height, wave distance, and wave number of the multi-directional flexible concave corrugated steel plates of the connecting segments, and the length of each segment, the structure can be targeted to deal with different fault displacement levels.

[0035] In another aspect, a construction method for a ship lock passing through an active fault structure based on a flexible absorption concept is provided, comprising the following steps:

[0036] Step 1, construction of side piers of long-section lock chamber and short-section lock chamber:

[0037] Foundation treatment: The overall foundation is treated according to the design requirements, including foundation excavation and reinforcement, and setting of cast-in-place piles;

[0038] Side pier reinforcement binding: The side pier reinforcement is bound on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements;

[0039] Side pier formwork erection: The side pier formwork is erected, and the hole of the water delivery corridor is reserved. The formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring;

[0040] Side pier concrete pouring: The side pier concrete is poured in layers, and the pouring thickness of each layer meets the design requirements. The concrete needs to be vibrated and compacted to ensure the quality of the concrete;

[0041] Side pier maintenance: After the concrete pouring is completed, covering and watering maintenance measures are taken to ensure that the concrete strength meets the design requirements;

[0042] Step 2, bottom plate and side pier wide slot reservation:

[0043] Bottom plate reinforcement binding: The bottom plate reinforcement is bound on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements.

[0044] Side pier and bottom plate wide slot reservation: A certain width of gap is reserved between the side pier and the bottom plate for subsequent wide slot filling.

[0045] Step 3, bottom plate construction:

[0046] Bottom plate formwork erection: The bottom plate needs to be segmented according to the length of the section, corresponding to the length of the side pier. The formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring;

[0047] Step 4, wide slot filling:

[0048] Wide slot cleaning: After the bottom plate and side pier concrete strength meet the design requirements, clean the debris and dust in the wide slot;

[0049] Wide slot reinforcement binding: Reinforcement is bound in the wide slot as needed to ensure that the position and spacing of the reinforcement meet the design requirements;

[0050] Wide slot pouring: Pour the wide slot concrete, which needs to be vibrated and compacted to ensure that it forms an integral whole with the bottom plate and side pier;

[0051] Step 5, connection section construction:

[0052] Connection segment leveling layer construction: In the length of the connection segment left between long and short segments, first construct a concrete leveling layer to ensure the bottom of the connection segment is flat;

[0053] Layer-by-layer upward pouring: Starting from the concrete leveling layer, pour the remaining layers of the connection segment structure layer by layer upwards;

[0054] Square corrugated pipe installation: Fill to the corresponding elevation, first install the square corrugated pipe at the water conveying gallery of the connection segment to ensure the accurate position and firm connection of the corrugated pipe;

[0055] Square corrugated pipe and water conveying gallery groove filling: Fill the groove between the square corrugated pipe and the water conveying gallery with hydraulic joint sealing material to ensure the sealing property;

[0056] Square corrugated pipe external foam board wrapping: Wrap a layer of flexible foam board outside the square corrugated pipe to provide displacement space for the deformation of the square corrugated pipe;

[0057] Subsequent layer pouring: Continue to pour the subsequent layers of the connection segment, including the gravel thick cushion layer, the lower flexible foam board, the multi-directional flexible concave corrugated steel plate, and the external surface sealing coating, until the complete connection segment structure is formed;

[0058] Step 6, overall structure maintenance and acceptance:

[0059] Overall structure maintenance: Maintain the ship lock structure after completion of pouring to ensure that the concrete strength meets the design requirements;

[0060] Construction quality inspection: Conduct quality inspection on each process during construction to ensure that the construction quality meets the design requirements and standard specifications;

[0061] Engineering acceptance: Organize relevant units to conduct acceptance of the ship lock project to ensure that the project meets the design requirements and can operate safely and stably;

[0062] Step 7, later maintenance and management:

[0063] Maintenance plan development: Develop a detailed maintenance plan according to the characteristics and usage of the ship lock structure;

[0064] Regular inspection and maintenance: Regularly inspect and maintain the ship lock structure to timely discover and handle potential problems;

[0065] Safety monitoring: Monitor the safety of the ship lock structure to grasp the real-time fault displacement and the stress and strain state of the structure to ensure its safety and stability during operation.

[0066] The present application has the following beneficial effects:

[0067] 1. The structure of the application is based on the design concept of flexible absorption. Under the action of tension, compression and shear, the safe and stable operation of the ship lock structure can still be ensured. Through the combination of rigidity and flexibility, it can adapt to various types of fault displacement deformation, thereby effectively dealing with the safety problems encountered by the ship lock when crossing the active fault, and providing an important reference for future part of the active fault channel project.

[0068] 2. The application considers the partial failure of the structure under the long-term action of the fault, and sets up multiple waterproof and water isolation measures to prevent secondary damage caused by water penetration to the structure and improve the durability of the structure.

[0069] 3. The connecting section absorbs most of the fault displacement, and the damage will be concentrated in this part, avoiding damage to the main structure of the ship lock, and facilitating the repair of the project in the later period.

[0070] 4. The ship lock structure across the active fault based on the flexible absorption concept in the application. In the initial operation period, the fault creep displacement is small, and the overall structure will not deform obviously. With the increase of the operation period, the axis of each chamber section deflects and swings by a small angle to adapt to the fault displacement and prevent the structure from being damaged; at this time, the upper closed coating of the connecting section cracks under the action of displacement, the corrugated steel plate produces large tensile, compressive and shear deformation, and at the same time bears the water pressure in the ship lock. Each part can still remain relatively stable during the design operation period. When the structure is over-serviced or the ground surface stick-slip displacement is induced by an earthquake, the corrugated steel plate is prone to damage, at which time the geomembrane as the impermeable material at the bottom of the bottom plate plays a role after the corrugated steel plate fails, preventing the infiltration of water in the lock, and the gravel layer can reduce the damage caused by the earthquake. In addition, the number of short section chambers, the wave height, wave distance, wave number of the corrugated pipe and the length of each section can be adjusted to make the structure targetedly deal with different fault displacement levels. BRIEF DESCRIPTION OF DRAWINGS

[0071] The application will be further described below in combination with the drawings and examples.

[0072] Figure 1 It is a three-dimensional view of the channel structure across the active fault based on the flexible absorption concept of the application.

[0073] Figure 2 It is a sectional view of the channel structure across the active fault based on the flexible absorption concept of the application.

[0074] Figure 3 It is a layered diagram of the connecting section between the long and short chambers of the application.

[0075] Figure 4 It is a diagram showing the relative positions of the concave corrugated plate and the square corrugated pipe.

[0076] Figure 5The overall structure of the multi-directional flexible concave corrugated plate of the present application is shown in the figure.

[0077] Figure 6 The overall structure and external environment of the improved square corrugated pipe of the present application are shown in the figure.

[0078] Figure 7 The dislocation of the channel passing through the active fault structure during the operation of the present application based on the flexible absorption concept is shown in the figure.

[0079] Figure 8 The stress diagram of the conventional corrugated structure which can only adapt to axial tension and compression and transverse shear.

[0080] Figure 9 The stress diagram of the S-shaped corrugation on the multi-directional flexible concave corrugated steel plate of the present application which can provide displacement compensation in the inclined direction.

[0081] In the figure: 1-long section lock chamber; 2-short section lock chamber; 21-circular arc chamfer; 3-connection section; 31-outer surface closed coating; 32-upper flexible foam plate; 33-multi-directional flexible concave corrugated steel plate; 331-U-shaped corrugated section; 332-S-shaped corrugated section; 34-gravel thick cushion layer; 35-anti-seepage layer; 36-concrete leveling layer; 4-side pier; 5-water conveying gallery; 6-connection wide groove; 7-bottom plate; 8-square corrugated pipe; 9-hydraulic joint sealing material. DETAILED DESCRIPTION

[0082] The embodiments of the present application will be further described below in conjunction with the accompanying drawings.

[0083] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, and the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. For the sake of convenience, the words "up", "down", "left", "right" appear in the following text only indicate the same direction as the up, down, left and right directions of the drawings themselves, and do not limit the structure.

[0084] Example 1:

[0085] Reference Figures 1-9The application discloses a ship lock active fault passing structure based on a flexible absorption concept, wherein a ship lock chamber is divided into multiple segments with different lengths in an active fault passing area, including long segment chambers 1 and short segment chambers 2, the long segment chambers 1 and the short segment chambers 2 are alternately connected through connecting segments 3, and the connecting segments 3 are used for absorbing displacement of the active fault. The connecting segments 3 have the function of flexible absorption deformation, and can ensure safe and stable operation of the ship lock structure under the action of tension, compression and shear to a certain extent. Furthermore, the connecting segments 3 can adapt to multiple types of fault dislocation deformation through the combination of rigidity and flexibility, thereby effectively solving the safety problem of the ship lock when passing through the active fault, and providing an important reference for future part of the active fault channel engineering.

[0086] Further, the length of the long segment chambers 1 and the short segment chambers 2 is 10-100 m. The more active the fault zone movement is, the shorter the segment length is, and increasing the flexibility of the whole is beneficial to the adaptation of the chamber to the fault dislocation.

[0087] Further, the connecting segment 3 is provided with an outer surface closed coating 31, an upper flexible foam plate 32, a multi-directional flexible concave corrugated steel plate 33, a lower flexible foam plate, a pebble thick cushion layer 34, a seepage prevention layer 35 and a concrete leveling layer 36 from top to bottom. The connecting segment 3 enhances the flexibility of the structure, so that the ship lock can highly adapt to the fault dislocation deformation, and ensures the safe and stable operation of the ship lock when passing through the active fault.

[0088] Further, the outer surface closed coating 31 is made of 5-10 cm asphalt mastic filler. The outer surface closed coating 31 is used for waterproofing and water isolation.

[0089] Further, the upper flexible foam plate 32 and the lower flexible foam plate are made of modified polystyrene foam composite plates. The foam plates are combined with other materials through a composite technology, so that the compression strength and the moisture-proof and waterproof performance of the whole can be effectively improved. In addition, the flexible foam plates can not only absorb part of the fault dislocation, but also prevent the cracking of the waterproof layer in the later period, the leakage of silt at the trough of the corrugated pipe to form silt accumulation and affect the performance of the corrugated plate, and can provide displacement space for the deformation of the corrugated plate.

[0090] Further, the pebble thick cushion layer 34 is selected from pebble particles with a diameter of 50-80 mm, and the laying thickness is 0.3-0.7 m. The pebble layer can reduce and isolate the vibration of the upper structure.

[0091] Further, the seepage prevention layer 35 is a geomembrane made of plastic film as a seepage prevention base material and two layers of non-woven fabric, and the relevant parameter standard is not less than 150 g / m 2 + 0.3mm + 150g / m 2 .

[0092] Further, the concrete leveling layer 36 is made of asphalt concrete, and a joint is arranged between the concrete leveling layer 36 and the two side slabs, and the thickness of the concrete leveling layer 36 is not less than 1 / 2 of the thickness of the slabs. The concrete leveling layer 36 mainly plays a leveling role.

[0093] Further, the multi-directional flexible concave corrugated steel plate 33 is of an integrated structure, and a plurality of U-shaped corrugated segments 331 are arranged along the water flow direction of the ship lock chamber. The vertical and horizontal steel plates in the cross section of the multi-directional flexible concave corrugated steel plate 33 are connected by S-shaped corrugated connecting segments 332. The U-shaped corrugated segments 331 are used to meet the displacement requirements of the axial tension and compression and the transverse shear of the structure. The S-shaped corrugated connecting segments 332 are used to make the two-directional corrugations superimposed, so that the two corners of the concave corrugated plate form a spatially superimposed state, so that the structure has the ability of transverse tension and compression and vertical shear, and at the same time, the bending of the concave plate at the connecting position is avoided, and the stress concentration phenomenon at the concave sharp corner is reduced.

[0094] Further, the long-section ship lock chamber 1 and the short-section ship lock chamber 2 are respectively of an integrated structure, and each part is independently arranged and respectively includes a slab 7. Two wide grooves 6 are arranged at the two ends of the slab 7 in the longitudinal direction, so that the ship lock section is divided into three pouring blocks, and the blocks are poured in layers and alternately. After the side piers 4 are poured to the top, the concrete of the wide grooves 6 is backfilled in the low-temperature season, so that the wide grooves 6 form an integrated structure. In the embodiment, the wide grooves 6 are 1.5 m. The arrangement type of the ship lock chamber and the arrangement of the connecting segments can fully play the advantages of the coordinated stress of the slab and the pier, and at the same time, the fault dislocation damage is concentrated in the flexible connecting position.

[0095] Further, the side piers and the slab of the ship lock chamber are connected in an integrated manner. The axial direction of the ship lock is only disconnected at the connecting segments, and the width required by the connecting segments between the sections is reserved. This arrangement is suitable for the foundation with strong capacity, and can concentrate the dislocation deformation in the connecting segments.

[0096] Further, the inside of the slab 7 is provided with a water conveying corridor 5, and the connecting segments 3 cut off the water conveying corridor 5 and are connected by square corrugated pipes 8 at the corresponding positions. The improved square corrugated pipes 8 are mainly used for the connection of the water conveying corridor in the connecting segments. The two ends of the square corrugated steel pipe are folded outward, and are embedded in the concrete water conveying corridor at the two ends, so as to prevent the corrugated steel pipe from being pulled out, and at the same time, the embedded port of the concrete is filled with sealing mortar.

[0097] Further, the square corrugated pipe 8 is provided with a plurality of U-shaped corrugated segments in the axial direction. The two sides of the U-shaped corrugated segment are connected with square straight pipe segments, the other end of the square straight pipe segment is provided with a gradually expanding flared segment, the two ends of the gradually expanding flared segment are folded outward and embedded in the external concrete, and at the same time, the embedded port of the concrete is filled with hydraulic sealing material 9 with a density grade of 100-1600 kg / m 3 .

[0098] The sealing material is preferably polyurethane sealing mortar.

[0099] Further, the square-shaped corrugated pipe 8 is filled with flexible foaming agent or uses foam board outside the connecting section part, to provide displacement for the deformation of the U-shaped corrugated section.

[0100] Further, the side pier overflow side of the junction of the long-section lock chamber 1 and the short-section lock chamber 2 with the connecting section 3 is provided with a circular arc chamfer, and the radius of the circular arc chamfer is 1 / 4 of the axial length of the short-section lock chamber. The circular arc chamfer prevents the formation of a fault after structural dislocation, and the ship passes more smoothly.

[0101] Embodiment 2:

[0102] In another aspect, a method for operating a ship lock over an active fault structure based on the concept of flexible absorption is provided, which is implemented by using the ship lock over an active fault structure based on the concept of flexible absorption, and includes the following steps:

[0103] 1) Initial stage:

[0104] When the ship lock is just put into use, the creep dislocation amount of the active fault is small. At this time, the overall structure of the ship lock can effectively absorb and disperse this small amount of dislocation due to the design of the long-section lock chamber 1 and the short-section lock chamber 2 alternatingly connected, and the setting of the flexible connecting section 3, so that the overall structure will not be deformed obviously. At this stage, the ship lock can run smoothly, ensuring the smooth navigation of the ship.

[0105] 2) Running stage:

[0106] As the running life of the ship lock increases, the creep dislocation amount of the active fault gradually increases. At this stage, the ship lock structure begins to play its advantage of flexible absorption, and the axis of the long-section lock chamber 1 and the short-section lock chamber 2 will deflect and swing by a small angle to adapt to the dislocation of the fault, thereby preventing the structure from being severely damaged. Specifically, it includes:

[0107] 2.1) Chamber segment deflection and swing: the long-section lock chamber 1 can relatively stably withstand large extrusion forces due to its longer length; while the short-section lock chamber 2 can more easily deflect under extrusion due to its shorter length, thereby causing the long-section lock chamber 1 to swing and absorb and disperse the dislocation amount of the fault; see Figure 7 ;

[0108] 2.2) Connecting section deformation: as the chamber segments deflect and swing, the connecting section 3 also begins to deform, at which time the parts of the connecting section may appear cracks and friction between pebbles under the displacement, thereby helping to release the stress inside the structure.

[0109] 2.3) Deformation of the multi-directional flexible concave corrugated steel plate 33: In the connecting section, the multi-directional flexible concave corrugated steel plate is the main part of absorbing the fault displacement. Unlike the conventional corrugated pipe / corrugated plate, the conventional corrugated structure can only adapt to the axial tension and compression and the transverse shear, as shown in Figure 8 , this structure cannot adapt to the uneven vertical and horizontal displacement that may exist between the long and short sections of the ship lock; the S-shaped corrugation on the concave corrugated steel plate described in the present application can provide displacement compensation in the inclined direction, as shown in Figure 9 , by decomposing the displacement, the structure has the ability to compensate for vertical tension and compression and horizontal shear, compared with the conventional corrugated structure, it can more effectively absorb and disperse the fault displacement, and ensure the normal operation of the structure.

[0110] 3) Over-service or earthquake situation:

[0111] When the ship lock structure is over-served or the surface stick-slip fault is induced by the earthquake, the fault displacement will increase sharply, in this extreme case, the multi-directional flexible concave corrugated steel plate 33 may fail due to bearing too much deformation, at this time, the anti-seepage layer 35 in the ship lock structure will play a role to prevent the water in the lock from seeping down, so as to ensure that the basic function of the ship lock is not affected; specifically including:

[0112] 3.1) Geomembrane anti-seepage: after the multi-directional flexible concave corrugated steel plate 33 fails, the geomembrane located at the bottom of the connecting section will play a role as the anti-seepage material at the bottom of the bottom plate, the geomembrane has anti-seepage performance, which can effectively prevent the water in the lock from seeping into the foundation or backfill soil, thereby avoiding the weakening of the bearing capacity of the foundation and the aggravation of the structural deformation;

[0113] 3.2) Pebble thick cushion layer 34 shock absorption: the pebble thick cushion layer 34 as part of the connecting section can not only provide shock absorption and isolation for the upper structure, but also reduce the impact and damage to the structure in the extreme case of earthquake, and the pebble thick cushion layer 34 is designed by the particle size and laying thickness to ensure that it can effectively absorb and disperse the energy of the seismic wave;

[0114] 4) Structural adjustment and optimization:

[0115] By adjusting the number of short section lock chambers 2, the wave height, wave distance, wave number of the multi-directional flexible concave corrugated steel plate 33 of the connecting section 3, and the length of each section, the structure can be targeted to deal with different fault displacement levels.

[0116] Example 3:

[0117] On the other hand, a construction method of a ship lock passing through an active fault structure based on the flexible absorption concept is provided, comprising the following steps:

[0118] Step 1, construction of the side pier of the long section lock chamber 1 and the short section lock chamber 2:

[0119] Foundation treatment: Treat the overall foundation according to design requirements, including foundation excavation and reinforcement, setting of cast-in-place piles;

[0120] Edge pier reinforcement binding: Bind the edge pier reinforcement on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements;

[0121] Edge pier formwork erection: Erection of edge pier formwork, reservation of water gallery holes, formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring;

[0122] Edge pier concrete pouring: Pouring edge pier concrete in layers, each layer pouring thickness meets the design requirements, needs to be vibrated and compacted to ensure concrete quality;

[0123] Edge pier maintenance: After concrete pouring is completed, take measures such as covering and watering to ensure that the concrete strength meets the design requirements;

[0124] Step 2, bottom plate and edge pier wide slot reservation:

[0125] Bottom plate reinforcement binding: Bind the bottom plate reinforcement on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements.

[0126] Edge pier and bottom plate wide slot reservation: Reserve a certain width gap between the edge pier and the bottom plate for subsequent wide slot filling.

[0127] Step 3, bottom plate construction:

[0128] Bottom plate formwork erection: The bottom plate needs to be segmented according to the length of the segment, corresponding to the length of the edge pier, the formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring;

[0129] Step 4, wide slot filling:

[0130] Wide slot cleaning: After the bottom plate and edge pier concrete strength meets the design requirements, clean the debris and dust in the wide slot;

[0131] Wide slot reinforcement binding: Bind the reinforcement in the wide slot as needed to ensure that the position and spacing of the reinforcement meet the design requirements;

[0132] Wide slot pouring: Pouring wide slot concrete, needs to be vibrated and compacted to ensure that it forms an integral whole with the bottom plate and edge pier;

[0133] Step 5, connection section construction:

[0134] Connection section screed layer construction: In the connection section length left between the long and short segments, first construct the concrete screed layer to ensure the bottom of the connection section is flat;

[0135] Layer-by-layer upward pouring: Starting from the concrete leveling layer, the remaining layers of the connecting section structure are poured layer by layer upwards;

[0136] Square corrugated pipe installation: Fill to the corresponding elevation, first install the square corrugated pipe 8 at the water conveying gallery 5 of the connecting section, ensure the accurate position of the corrugated pipe and firm connection;

[0137] Square corrugated pipe 8 and water conveying gallery 5 groove filling: Fill the groove between the square corrugated pipe 8 and the water conveying gallery 5 with hydraulic sealing material to ensure the sealing;

[0138] Square corrugated pipe external foam board wrapping: Wrap a layer of flexible foam board outside the square corrugated pipe 8 to provide displacement space for the deformation of the square corrugated pipe 8;

[0139] Subsequent layer pouring: Continue to pour the subsequent layers of the connecting section, including the gravel thick cushion layer, the lower flexible foam board, the multi-directional flexible concave corrugated steel plate, and the outer surface sealing coating, until the complete connecting section structure is formed;

[0140] Step 6, overall structure maintenance and acceptance:

[0141] Overall structure maintenance: Maintain the ship lock structure after completion of pouring to ensure that the concrete strength meets the design requirements;

[0142] Construction quality inspection: Conduct quality inspection on each process during construction to ensure that the construction quality meets the design requirements and standard specifications;

[0143] Engineering acceptance: Organize relevant units to conduct acceptance of the ship lock project to ensure that the project meets the design requirements and can operate safely and stably;

[0144] Step 7, later maintenance and management:

[0145] Maintenance plan development: Develop a detailed maintenance plan according to the characteristics and use of the ship lock structure;

[0146] Regular inspection and maintenance: Regularly inspect and maintain the ship lock structure to timely discover and handle potential problems;

[0147] Safety monitoring: Monitor the safety of the ship lock structure to grasp the real-time fault displacement and the stress and strain state of the structure to ensure its safety and stability during operation.

[0148] The above examples are only illustrative of the principles of the present application and its mode of operation, and are not intended to limit the present application. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A ship lock passing active fault structure based on a flexible absorption concept, characterized by, The ship lock chamber is divided into segments of different lengths in the area of the active fault, including long segment chambers (1) and short segment chambers (2), which are alternately connected by connecting segments (3) for absorbing the displacement of the active fault; the connecting segments (3) are externally coated with a closed coating (31), an upper flexible foam board (32), a multi-directional flexible concave corrugated steel plate (33), a lower flexible foam board, a thick pebble cushion layer (34), an anti-seepage layer (35), and a concrete leveling layer (36) from top to bottom; the multi-directional flexible concave corrugated steel plate (33) is of an integrated structure and is provided with a plurality of U-shaped corrugated segments (331) along the water flow direction of the ship lock chamber; the vertical and horizontal steel plates in the cross section of the multi-directional flexible concave corrugated steel plate (33) are connected by an S-shaped corrugated connecting segment (332).

2. The ship lock passing active fault structure based on the flexible absorption concept according to claim 1, characterized in that: The length of the long segment chamber (1) and the short segment chamber (2) is 10-100 m.

3. The ship lock passing active fault structure based on the flexible absorption concept according to claim 1, characterized in that: The external surface closed coating (31) is made of 5-10 cm asphalt mastic filler.

4. The flexible absorption concept based lock crossing active fault structure according to claim 1, characterized in that: The upper flexible foam board (32) and the lower flexible foam board are made of modified polystyrene foam composite board.

5. The flexible absorption concept based lock crossing active fault structure according to claim 1, characterized in that: The thick pebble cushion layer (34) is made of pebble particles with a diameter of 50-80 mm and has a thickness of 0.3-0.7 m.

6. The flexible absorption concept based lock crossing active fault structure according to claim 1, characterized in that: The anti-seepage layer (35) is made of a plastic film as an anti-seepage base material, a geomembrane composed of two layers of non-woven fabric, and relevant parameter standards are not less than 150g / m 2 + 0.3mm + 150g / m 2 .

7. The flexible absorption concept based lock crossing active fault structure according to claim 1, characterized in that: The concrete leveling layer (36) is made of asphalt concrete and is provided with a joint between the two side plates, and the thickness is not less than 1 / 2 of the thickness of the bottom plate.

8. The flexible absorption concept based lock crossing active fault structure according to claim 1, characterized in that: The long segment chamber (1) and the short segment chamber (2) are of an integrated structure, and each part is independently arranged and includes a bottom plate (7), two wide grooves (6) are arranged at the two ends of the bottom plate (7) in the longitudinal direction, the ship lock cross section is divided into three pouring blocks, and the concrete of the wide grooves (6) is backfilled in the low temperature season after the side piers (4) on both sides are poured to the top, so that the overall structure is formed.

9. The flexible absorption concept based lock crossing active fault structure according to claim 8, characterized in that: The inside of the bottom plate (7) is provided with a water delivery corridor (5), the connecting segment (3) cuts off the water delivery corridor (5), and is connected by a square corrugated pipe (8) at the corresponding position.

10. The flexible absorption concept based lock crossing active fault structure according to claim 9, characterized in that: The square wave tube (8) is provided with multiple U-shaped wave segments in the axial direction, the two sides of the U-shaped wave segments are connected with square straight pipe segments, the other end of the square straight pipe segment is provided with a gradually expanding mouth segment, the two ends of the gradually expanding mouth segment are folded outward, and are embedded in the external concrete, and meanwhile, the water conservancy filling material (9) with a density grade of 100-1600 kg / m 3 is filled in the embedded port in the concrete to seal.

11. The flexible absorption concept based lock crossing active fault structure according to claim 9, characterized in that: The square corrugated pipe (8) is filled with a flexible foaming agent or a foam board outside the connecting segment part to provide displacement for the deformation of the U-shaped corrugated segment.

12. The flexible absorption concept based lock crossing active fault structure according to claim 9, characterized in that: The side pier overflow side at the joint of the long segment chamber (1) and the short segment chamber (2) and the connecting segment (3) is provided with a circular arc chamfer, and the radius of the circular arc chamfer is 1 / 4 of the axial length of the short segment chamber.

13. A method of operating a ship lock over an active fault structure based on the concept of flexible absorption, characterized by: The operation method uses the ship lock structure based on the flexible absorption concept in any one of claims 1-12 to realize, including the following steps: 1) Initial stage: When the ship lock is just put into use, the creep displacement of the active fault is small, at this time, the overall structure of the ship lock can effectively absorb and disperse this small displacement due to the design of the alternately connected long segment chamber (1) and short segment chamber (2) and the setting of the flexible connecting segment (3), so that the overall structure will not deform obviously, and the ship lock can run smoothly to ensure the smooth navigation of the ship; 2) Running stage: With the increase of the operation time of the ship lock, the creep displacement of the active fault gradually increases. In this stage, the ship lock structure begins to play its advantage of flexibility absorption. The axis of the long section lock chamber (1) and the short section lock chamber (2) will adapt to the fault displacement by small angle deflection and swing, thereby preventing the structure from being seriously damaged. Specifically, it includes: 2.1) Deflection and swing of the lock chamber section: Due to its longer length, the long section lock chamber (1) can relatively stably withstand large extrusion forces; while the short section lock chamber (2) can more easily deflect under extrusion, thereby driving the long section lock chamber (1) to swing and absorbing and dispersing the fault displacement; 2.2) Deformation of the connecting section: With the deflection and swing of the lock chamber section, the connecting section (3) also begins to deform. At this time, the parts of the connecting section may have cracks and friction between the pebbles under the displacement, thereby helping to release the stress inside the structure; 2.3) Deformation of the multi-directional flexible concave corrugated steel plate (33): In the connecting section, the multi-directional flexible concave corrugated steel plate (33) is the main part of absorbing displacement. The S-shaped corrugated connecting section (332) on the multi-directional flexible concave corrugated steel plate (33) can provide displacement compensation in the inclined direction, and through the decomposition of the displacement, the structure has the ability of vertical tension and horizontal shear compensation, thereby more effectively absorbing and dispersing the fault displacement and ensuring the normal operation of the structure; 3) Over-service or earthquake situation: When the ship lock structure is over-served or the surface stick-slip displacement is induced by the earthquake, the fault displacement will increase sharply. In this extreme case, the multi-directional flexible concave corrugated steel plate (33) may fail due to excessive deformation. At this time, the anti-seepage layer (35) in the ship lock structure will play a role to prevent the water in the lock from infiltrating, thereby ensuring that the basic function of the ship lock is not affected. Specifically, it includes: 3.1) Geomembrane anti-seepage: After the multi-directional flexible concave corrugated steel plate (33) fails, the geomembrane at the bottom of the connecting section will play a role as the anti-seepage material at the bottom of the bottom plate. The geomembrane has anti-seepage performance and can effectively prevent the water in the lock from infiltrating into the foundation or backfill soil, thereby avoiding the weakening of the bearing capacity of the foundation and the aggravation of the structure deformation; 3.2) Pebble thick cushion (34) shock absorption: The pebble thick cushion (34) as part of the connecting section not only can provide shock absorption and isolation for the upper structure, but also can reduce the impact and damage to the structure in the extreme case of earthquake, and through the design of the particle size and laying thickness of the pebble thick cushion (34), it can ensure that it can effectively absorb and disperse the energy of the seismic wave; 4) Structure adjustment and optimization: By adjusting the number of short section lock chambers (2), the wave height, wave distance, wave number of the multi-directional flexible concave corrugated steel plate (33) of the connecting section (3), and the length of each section, the structure can be targeted to deal with different fault displacement levels.

14. The construction method of a ship lock passing through an active fault structure based on a flexible absorption concept according to any one of claims 1-12, characterized in that, Including the following steps: Step 1, construction of the side pier of the long section lock chamber (1) and the short section lock chamber (2): Foundation treatment: The overall foundation is treated according to the design requirements, including foundation excavation and reinforcement, setting of cast-in-place piles; Edge pier reinforcement binding: Bind the edge pier reinforcement on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements; Edge pier formwork erection: Erection of edge pier formwork, reservation of water gallery hole, formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring; Edge pier concrete pouring: Pouring of edge pier concrete in layers, each layer pouring thickness meets the design requirements, needs to be vibrated and compacted to ensure concrete quality; Edge pier maintenance: After the completion of concrete pouring, take measures such as covering and watering to ensure that the concrete strength meets the design requirements; Step 2, bottom plate and edge pier wide slot reservation: Bottom plate reinforcement binding: Bind the bottom plate reinforcement on the foundation to ensure that the position and spacing of the reinforcement meet the design requirements; Edge pier and bottom plate wide slot reservation: Reserve a certain width gap between the edge pier and the bottom plate for subsequent wide slot filling; Step 3, bottom plate construction: Bottom plate formwork erection: The bottom plate needs to be segmented according to the length of the segment, corresponding to the length of the edge pier, the formwork needs to be tightly spliced and firmly supported to ensure that no deformation or displacement occurs during pouring; Step 4, wide slot filling: Wide slot cleaning: After the bottom plate and edge pier concrete strength meets the design requirements, clean the debris and dust in the wide slot; Wide slot reinforcement binding: Bind the reinforcement in the wide slot as needed to ensure that the position and spacing of the reinforcement meet the design requirements; Wide slot pouring: Pouring of wide slot concrete, needs to be vibrated and compacted to ensure the formation of an integral whole with the bottom plate and edge pier; Step 5, connection segment construction: Connection segment leveling layer construction: In the length of the connection segment left between the long and short segments, first construct the concrete leveling layer to ensure the flatness of the connection segment bottom; Layer by layer upward pouring: Starting from the concrete leveling layer, layer by layer upward pouring of the remaining layers of the connection segment structure; Square corrugated pipe installation: Fill to the corresponding elevation, first install the square corrugated pipe (8) at the connection segment water gallery (5), ensure the accurate position and firm connection of the corrugated pipe; Square corrugated pipe (8) and water gallery (5) groove filling: Fill the groove between the square corrugated pipe (8) and the water gallery (5) with water filling material to ensure the sealing; Square corrugated pipe external foam board wrapping: Wrap a layer of flexible foam board outside the square corrugated pipe (8) to provide displacement space for the deformation of the square corrugated pipe (8); Subsequent layer pouring: Continue to pour the subsequent layers of the connection segment, including the gravel thick cushion layer, the lower flexible foam board, the multi-directional flexible concave corrugated steel plate, the outer surface sealing coating, until the formation of a complete connection segment structure; Step 6, overall structure maintenance and acceptance: Overall structure maintenance: Maintenance of the completed ship lock structure to ensure that the concrete strength meets the design requirements; Construction quality inspection: Quality inspection of each process during construction to ensure that the construction quality meets the design requirements and standard specifications; Engineering acceptance: Organization of relevant units to conduct acceptance of the ship lock project to ensure that the project meets the design requirements and can operate safely and stably; Step 7, later maintenance and management: Maintenance plan development: Develop a detailed maintenance plan according to the characteristics and usage of the ship lock structure; Regular inspection and maintenance: Regular inspection and maintenance of the ship lock structure to timely discover and handle potential problems; Safety monitoring: safety monitoring of the ship lock structure, master real-time fault dislocation, and the stress and strain state of the structure, to ensure its safety and stability in the operation process.

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