CN114810135B - Shield tunnel section of jurisdiction longitudinal joint does not have hand hole multiple spot connection structure - Google Patents
Shield tunnel section of jurisdiction longitudinal joint does not have hand hole multiple spot connection structure Download PDFInfo
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- CN114810135B CN114810135B CN202210380907.XA CN202210380907A CN114810135B CN 114810135 B CN114810135 B CN 114810135B CN 202210380907 A CN202210380907 A CN 202210380907A CN 114810135 B CN114810135 B CN 114810135B
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- 238000007789 sealing Methods 0.000 description 8
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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Abstract
The invention provides a longitudinal seam hand-hole-free multipoint connection structure of shield tunnel segments, which comprises a first shield segment, a second shield segment, a first C-shaped member, a second C-shaped member and a connection assembly for connecting the first shield segment and the second shield segment, wherein the first shield segment and the second shield segment are connected along the circumferential direction of a tunnel, the first C-shaped member is pre-embedded in the first shield segment, the second C-shaped member is pre-embedded in the second shield segment, the first C-shaped member is provided with a first connection groove extending along the longitudinal direction of the tunnel, the second C-shaped member is provided with a second connection groove extending along the longitudinal direction of the tunnel, the connection assembly extends along the longitudinal direction of the tunnel, one end of the connection assembly extends into the first connection groove, and the other end of the connection assembly extends into the second connection groove.
Description
Technical Field
The invention relates to the field of tunnel engineering, in particular to a longitudinal seam hand-hole-free multipoint connection structure for shield tunnel segments.
Background
Most longitudinal joints of the existing shield tunnel segments are connected by bolts, and when the diameter of a tunnel is large, if a single row of bolts is adopted, the corresponding longitudinal joint has small rigidity and large structural deformation, which is not beneficial to structural safety; if adopt double bolt, because the bolt construction needs the hand hole, double bolt hand hole is more, weakens greatly to segment structure atress cross-section, reduces structure bearing capacity, influences structural safety, and the hand hole can reduce the segment simultaneously and assemble the suction with vacuum chuck, has adverse effect to construction safety. In order to avoid the influence of the hand holes on the safety and construction of the segment structure and realize quick assembly, the existing scheme has a connection mode of adopting an embedded quick connector, most of the modes adopt CT-type bolts, a female connector is generally a hollow embedded component, the mode has large weakening on the thickness of the segment embedded by the female connector, the requirements on the segment manufacturing precision and the construction precision are extremely high, and the construction difficulty is increased; meanwhile, the conventional duct piece assembling mode needs to be changed in the connecting mode, the joint surface needs to slide relatively in a long distance, the waterproof sealing gasket is greatly influenced, the low-height sealing gasket (low height, namely low thickness) needs to be adopted, and the capacity of the low-height sealing gasket for adapting to the opening amount of the duct piece joint is weak, so that the waterproof safety is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a longitudinal seam hand-hole-free multipoint connecting structure of shield tunnel segments, and at least solves part of problems in the prior art.
The invention is realized by the following steps:
the invention provides a longitudinal seam hand-hole-free multipoint connection structure of shield tunnel segments, which comprises a first shield segment, a second shield segment, a first C-shaped member, a second C-shaped member and a connection assembly for connecting the first shield segment and the second shield segment, wherein the first shield segment and the second shield segment are connected along the circumferential direction of a tunnel, the first C-shaped member is pre-embedded in the first shield segment, the second C-shaped member is pre-embedded in the second shield segment, the first C-shaped member is provided with a first connection groove extending along the longitudinal direction of the tunnel, the second C-shaped member is provided with a second connection groove extending along the longitudinal direction of the tunnel, the connection assembly extends along the longitudinal direction of the tunnel, one end of the connection assembly extends into the first connection groove, and the other end of the connection assembly extends into the second connection groove.
Furthermore, the first connecting groove and the second connecting groove are communicated to form a "u" -shaped groove, the connecting assembly comprises a third C-shaped member and a sleeve member, the third C-shaped member and the sleeve member both extend along a longitudinal seam of the tunnel, the cross section of the third C-shaped member is "u" -shaped, the third C-shaped member comprises a web plate, a left flange plate and a right flange plate, the left flange plate is connected with the right flange plate through the web plate, the third C-shaped member extends into the "u" -shaped groove, and a top plate and a left side plate of the second C-shaped member and the web plate and the right flange plate of the third C-shaped member are encircled to form a square groove for the sleeve member to extend into the joint surface to generate a connecting force for the sleeve member to extend into the joint surface so as to complete the connection of the first shield segment and the second shield segment.
Furthermore, the longitudinal seam hand-hole-free multipoint connecting structure of the shield tunnel segment further comprises a limiting member, the third C-shaped member, the sleeve member and the limiting member are combined into a whole and extend into the U-shaped groove, the sleeve member is positioned in the third C-shaped member, the sleeve member is arranged close to the right flange plate, the limiting member covers the sleeve member and is perpendicular to the longitudinal direction of the tunnel, the section of the third C-shaped member, the section of the sleeve member and the limiting member is in a U shape, the sleeve member comprises a screw and a plurality of sleeves, the screw extends longitudinally along the tunnel, the screw is provided with a plurality of cone sections which are distributed longitudinally along the tunnel, the sleeves are sleeved on the screw, the sleeves are distributed longitudinally along the tunnel, and the sleeves are provided with cone holes matched with the cone sections, the conical surface of the conical section is provided with external threads, the inner wall of the conical hole is provided with internal threads matched with the external threads, the sleeves and the conical section are matched in a one-to-one correspondence manner, the sleeves are divided into a left sleeve part and a right sleeve part along the longitudinal direction of the tunnel, the right sleeve part is welded with a third C-shaped component, the limiting component covers the sleeves, the limiting component comprises a left baffle, a right baffle and a top plate connected with the left baffle and the right baffle, the right baffle is positioned between the right sleeve part and a right flange plate of the third C-shaped component, the right baffle is welded with the right sleeve part, the bottom of the right baffle is welded with a web plate of the third C-shaped component, the left baffle is positioned between the left side plate and the left sleeve part, the left baffle is closely attached to the left sleeve part, and the conical hole formed by the left sleeve part and the right sleeve part in a surrounding manner is used for the conical section of the screw rod to extend into and extrude, in the process that the conical section rotatably extends into the extrusion, the left sleeve part and the right sleeve part are separated to extrude the second C-shaped component and the third C-shaped component, so that the joint force of a joint surface is generated, the connection of the first shield segment and the second shield segment is completed, and a certain pretightening force is provided.
Furthermore, the limiting members are distributed at intervals along the longitudinal direction of the tunnel, and correspond to the sleeves one by one.
Furthermore, the right side of the top plate of the limiting component is welded with the right sleeve part, and the right baffle of the limiting component is welded with the right flange plate of the third C-shaped component.
Further, the sleeve is a cube.
Further, the sleeve component includes full thread steel bar and a plurality of elastic plastic sleeve, full thread steel bar extends along the vertical seam in tunnel, elastic plastic sleeve cover is located on the full thread steel bar, each plastic sleeve is along the vertical interval distribution in tunnel, the plastic sleeve is perpendicular to the fore-and-aft cross-section in tunnel and is the annular, plastic sleeve's inside wall is equipped with the internal thread with full thread steel bar complex, plastic sleeve is the pawl along the fore-and-aft cross-section in tunnel, plastic sleeve's external diameter is greater than the horizontal aperture of square groove.
The invention has the following beneficial effects:
1. the first C-shaped component and the second C-shaped component with the notch groove-shaped cross section are respectively embedded in the corresponding longitudinally connected pipe pieces, the third C-shaped component and the sleeve component are respectively welded with the limiting component to form a whole body which is inserted into the groove of the first C-shaped component and the second C-shaped component, and through the conical screw (the screw with the conical section) of the rotary sleeve component, the two parts of sleeves of the rotary sleeve component move towards the large-diameter cross section of the conical screw according to the thread direction to realize separation, the second C-shaped component and the third C-shaped component are extruded, so that the connecting force of a joint surface is generated, the pipe piece connection is completed, and certain pretightening force is provided. Compared with the connection mode of a CT type quick connector, the invention eliminates the gap after the connector is inserted and installed by extruding the internal conical screw, has no weakening to the concrete section of the joint surface, has certain pretightening force, and avoids the problem that the connection rigidity can be exerted only by the certain deformation of the duct piece after the CT type connector is installed.
2. The invention reduces the relative sliding of the joint surfaces when the duct pieces are assembled, reduces the friction influence on the waterproof sealing gasket, can adopt the duct piece assembling mode corresponding to the conventional bolt connecting mode and the conventional waterproof sealing gasket height, does not need to change the existing duct piece assembling construction and the conventional waterproof sealing gasket mode, and has wide adaptability.
3. The sleeve on the sleeve component can be subjected to multipoint arrangement according to design requirements, so that the connection strength is high, the joint rigidity is high, and the structural deformation can be effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first C-shaped member and a second C-shaped member provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a third C-shaped member provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view (cross-section parallel to the x-axis) of a first sleeve member embodiment provided in accordance with an embodiment of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3 (the portion within stop member 5) according to an embodiment of the present invention;
FIG. 5 is a diagram of a component assembly layout provided by an embodiment of the present invention;
FIG. 6 is a schematic view of a stop member 5 according to an embodiment of the present invention;
FIG. 7 is a schematic view of a second embodiment of a sleeve member according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of B-B of FIG. 7 according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of a fully threaded steel rod in a second embodiment of a sleeve member according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 9, an embodiment of the present invention provides a shield tunnel segment longitudinal joint hand-hole-free multipoint connection structure, where a longitudinal joint is a connection joint along a length direction of a tunnel, and the longitudinal joint includes a first shield segment 13, a second shield segment 14, a first C-shaped member 1, a second C-shaped member 2, and a connection assembly for connecting the first shield segment 13 and the second shield segment 14, where the first shield segment 13 and the second shield segment 14 are connected in a circumferential direction of the tunnel, the first C-shaped member 1 is pre-embedded in the first shield segment, the second C-shaped member 2 is pre-embedded in the second shield segment, as shown in fig. 5, the first C-shaped member 1 is provided with a first connection groove extending along the longitudinal direction of the tunnel, the second C-shaped member 2 is provided with a second connection groove extending along the longitudinal direction of the tunnel, one end of the connection assembly extends into the first connection groove, and the other end of the connection assembly extends into the second connection groove.
As shown in fig. 5, the first connecting groove and the second connecting groove are connected to form a "u" shaped groove, the connecting assembly includes a third C-shaped member 3 and a sleeve member 4, the third C-shaped member 3 and the sleeve member 4 both extend in the longitudinal direction of the tunnel, the section of the third C-shaped member 3 perpendicular to the longitudinal direction of the tunnel is "u" shaped, the third C-shaped member 3 includes a web 10, a left flange 11 and a right flange 12, the left flange 11 is connected to the right flange 12 through the web 10, the left flange 11 is located in the first connecting groove, the right flange 12 is located in the second connecting groove, one end of the web extends into the first connecting groove, the other end of the web extends into the second connecting groove, the port of the first connecting groove into which the web extends is opposite to the port of the second connecting groove into which the web extends, the third C-shaped member 3 extends into the "u" shaped groove, the top plate 8 and the square plate 9 of the second C-shaped member 2 and the web 3 and the right flange 12 move towards the second connecting groove, thereby driving the shield-shaped member to move towards the right side of the second connecting groove (the shield-shaped member 4).
The sleeve member 4 has two embodiments, one of the two embodiments of the sleeve member further includes a limiting member 5, the third C-shaped member 3, the sleeve member 4 and the limiting member 5 are combined into a whole and then extend into a "u" -shaped groove, the sleeve member 4 is located in the third C-shaped member 3, the sleeve member 4 is disposed near the right flange plate 12, the limiting member 5 covers the sleeve member 4 and is perpendicular to the longitudinal direction of the tunnel, the cross section of the whole of the third C-shaped member 3, the sleeve member 4 and the limiting member 5 is "u" -shaped, as shown in fig. 3-6, the sleeve member 4 includes a screw rod 42 and a plurality of sleeves 41, the screw rod 42 extends along the longitudinal direction of the tunnel, the screw rod 42 is provided with a plurality of conical sections 6 distributed at intervals along the longitudinal direction of the tunnel, the sleeves 41 are sleeved on the screw rod 42, the sleeves 41 are distributed at intervals along the longitudinal direction of the tunnel, the sleeves 41 are provided with conical holes 7 matched with the conical sections 6, the conical surfaces of the conical sections 6 are provided with external threads, the inner walls of the conical holes 7 are provided with internal threads matched with the sleeve threads, as shown in fig. 3, the sleeve sections are matched with the external threads 6; a plurality of limiting members 5 are arranged, each limiting member 5 is longitudinally distributed at intervals along the tunnel, and the limiting members 5 correspond to the sleeves 41 one by one;
as shown in fig. 4-5, the sleeve 41 is a cube, the sleeve 41 is divided into a left sleeve portion 411 and a right sleeve portion 412 along the longitudinal direction of the tunnel, the left sleeve portion 411 is close to the longitudinal seam between the first shield segment 13 and the second shield segment 14, the right sleeve portion 412 is welded to the third C-shaped member 3, the position-limiting member 5 covers the sleeve 41, the position-limiting member 5 includes a left baffle 511, a right baffle 512, and a top plate 513 connecting the left baffle and the right baffle, the right baffle 512 is located between the right sleeve portion 412 and the right flange plate 12, the right baffle 512 is welded to the right sleeve portion 412, the bottom of the right baffle 512 is welded to the web 10 of the third C-shaped member 3, the left baffle 511 is located between the left plate 9 and the left sleeve portion 411, the left baffle 511 is closely attached to the left sleeve portion 411, a position limitation on the left sleeve portion 411 can be formed, the right side of the top plate 513 of the position-limiting member 5 can also be welded to the right sleeve portion 412, and the right baffle 512 of the position-limiting member 5 can also be welded to the right flange plate 512 of the third C-shaped member 3.
As shown in fig. 3-5, the tapered hole 7 enclosed by the left sleeve portion 411 and the right sleeve portion 412 allows the tapered section 6 of the screw 42 to extend and extrude, and in the process that the tapered section 6 extends and extrudes rotationally, the left sleeve portion 411 and the right sleeve portion 412 are separated to extrude the second C-shaped member 2 and the third C-shaped member 3, so as to generate a joint force of a joint surface, complete the connection between the first shield segment 13 and the second shield segment 14, and have a certain pre-tightening force. During the process that the cone section 6 is rotated to extend into the extrusion, the left sleeve part 411 is initially moved leftwards as shown in the arrow direction of fig. 4 to be separated from the right sleeve part 412, and the limiting component 5 limits the movement of the left sleeve part 411.
In the second embodiment of the sleeve member, as shown in fig. 7 to 8, the sleeve member 4 includes a full thread steel rod 44 and a plurality of elastic plastic sleeves 43, the full thread steel rod 44 extends along the longitudinal direction of the tunnel, the elastic plastic sleeves 43 are sleeved on the full thread steel rod 44, each of the plastic sleeves 43 is distributed at intervals along the longitudinal direction of the tunnel, the cross section of the plastic sleeve 43 perpendicular to the longitudinal direction of the tunnel is annular, the inner side wall of the plastic sleeve 43 is provided with an internal thread matched with the full thread steel rod 44, as shown in fig. 7, the cross section of the plastic sleeve 43 along the longitudinal direction of the tunnel is in the shape of a reversed tooth, so as to be conveniently inserted into the square groove, the outer diameter of the plastic sleeve 43 is larger than the transverse aperture (transverse direction, i.e. horizontal direction) of the square groove, the direction of the arrow in fig. 7 is the insertion direction of the sleeve member 4, and the sleeve member 4 is inserted into the square groove along the longitudinal direction of the tunnel.
According to the invention, the duct piece longitudinal joint hand-hole-free connection is realized while the duct piece assembling mode corresponding to the conventional bolt connection mode and the conventional waterproof sealing gasket height are adopted; the weakening of the concrete section of the joint surface is avoided; the relative sliding of the joint surfaces is reduced when the pipe pieces are assembled.
The invention provides a longitudinal seam hand-hole-free multipoint connection structure of shield tunnel segments, which mainly comprises a first C-shaped component 1, a second C-shaped component 2, a third C-shaped component 3, a sleeve component 4 and a limiting component 5. The first C-shaped component 1, the second C-shaped component 2 and the third C-shaped component 3 are notched groove-shaped sections, notches of the first C-shaped component 1 and the second C-shaped component 2 are aligned, and a web of the third C-shaped component 3 penetrates through the notches of the first C-shaped component 1 and the second C-shaped component 2. The sleeve member 4 mainly includes a tapered screw (screw 42 with tapered section 6) and a sleeve 41. As shown in figure 3, the conical screw is an axisymmetrical rod provided with distributed bulges along the length of the rod, and the inclined plane of the contact part of one end of the bulge part and the sleeve is provided with threads. The sleeve 41 is correspondingly distributed along the inclined plane at one end of the conical screw boss, the outer part is square, the inner part is provided with a variable cross section and is meshed with the inclined plane of the conical screw boss, the sleeve is divided into a left part and a right part at the position of a symmetrical axis parallel to a segment partitioning line (a y axis in figure 5), and the right sleeve part 412 close to one side of the second C-shaped component 2 is welded with the third C-shaped component 3. The limiting component 5 is a limiting baffle plate which is arranged corresponding to the sleeve 41 and is positioned on the periphery of the sleeve component 4, the limiting component is welded on the baffle plate on one side of the second C-shaped component and the right sleeve part 412 on the same side, the foot part of the baffle plate is welded with the web plate of the third C-shaped component, and the baffle plate limits the left sleeve part 411 on one side of the first C-shaped component to move along the normal direction of the dividing surface.
The principle of the realization of the hand-hole-free multipoint connecting structure for the longitudinal seam of the shield tunnel segment provided by the invention is as follows: the first C-shaped component 1 and the second C-shaped component 2 with notched groove-shaped cross sections are respectively embedded in corresponding longitudinally connected duct pieces, the third C-shaped component 3 and the sleeve component 4 are respectively welded with the limiting component 5 to form a whole and are inserted into the grooves of the first C-shaped component 1 and the second C-shaped component 2, two parts of sleeves of the rotating sleeve component 4 move towards the large-diameter cross sections of the conical screws according to the thread direction to realize separation by rotating the conical screws of the sleeve component 4, the left sleeve part 411 on one side of the first C-shaped component is limited by the baffle of the limiting component 5 and can only move along the normal direction of an interface to extrude the second C-shaped component 2 and the third C-shaped component 3, so that the connecting force of a joint surface is generated, the duct pieces are connected, and certain pre-tightening force is provided.
In addition, as shown in fig. 7 to 8, the present invention proposes another structural form of the sleeve member 4, which is characterized as follows:
the sleeve component 4 is composed of a full-thread steel bar and an elastic plastic sleeve, the inner side of the elastic plastic sleeve is provided with threads which can be meshed with the full-thread steel bar, the outer side of the elastic plastic sleeve is provided with inverted teeth, and the outer diameter of the inverted teeth is larger than the transverse space formed between the second C-shaped component 2 and the third C-shaped component 3.
The sleeve member 4 is pressed into the cavities (direction grooves) of the second C-shaped member 2 and the third C-shaped member 3 along the z-axis direction (the longitudinal direction of the tunnel, i.e. the direction perpendicular to the xy-plane in fig. 5), so that the second C-shaped member 2 and the third C-shaped member 3 are pressed, and therefore, the connecting force of the joint surface is generated, and the segment connection is completed.
The invention provides a longitudinal seam hand-hole-free multipoint connection structure of shield tunnel segments, which is shown in figures 1-6.
The structure and the construction process of the first scheme are as follows:
1) According to the structural calculation, the connection strength and the number of connection points required by the longitudinal seam are determined (the number of connection points is determined, namely how many sleeves 41 are arranged along the longitudinal direction of the tunnel to press the second C-shaped member 2 and the third C-shaped member 3).
2) Processing each component and the anchoring piece thereof according to the figure; it should be noted that to ensure that the required pre-tightening force is achieved at each connection point, the dimensions of the sleeve 41 and the threaded rod 42 are different at each point, with slight variations, to ensure that the further away from the jack the connection is, the earlier the compressive forces are developed on the second C-shaped member 2 and the third C-shaped member 3.
3) When the duct piece is manufactured, the first C-shaped component 1 and the second C-shaped component 2 are respectively embedded in the corresponding duct pieces;
4) Segment assembly is carried out according to a conventional segment assembly mode;
5) The left and right sleeve portions 411 and 412 are fixed to the screw rod 42 according to the designed connection point position, then the right sleeve portion 412 is welded to the third C-shaped member 3, and then the stopper member 5 is welded to the third C-shaped member 3 and the right sleeve portion 412, respectively, so that the third C-shaped member 3, the sleeve member 4, and the stopper member 5 form an integral structure. In this overall structure, the stopper member 5 is in close contact with the left sleeve portion 411, so that the position of the left sleeve portion 411 can be regulated, and the sleeve 41 can be moved in a fixed direction when expanded.
6) Inserting the third C-shaped element 3, sleeve element 4 and stop element 5 into the cavity (u-shaped) defined by the first C-shaped element 1 and the second C-shaped element 2;
7) And rotating the screw rod 42 to expand the sleeve 41 to extrude the second C-shaped component 2 and the third C-shaped component 3, so that the joint force of the joint surfaces is generated, and the segment connection is completed.
8) According to the durability condition of the tunnel environment, whether the cavity (the clearance in the U-shaped groove) is grouted and filled compactly is determined.
The technology has the advantages that: the assembly is simple, and the influence on the sealing gasket is small; the hand holes are not formed, the concrete section of the joint surface is not weakened, and the influence on the structural strength of the pipe sheet is small; because the sleeve 41 can be arranged at multiple points, the connection strength is high, the joint rigidity is high, and the structural deformation can be effectively reduced.
After the installation, the screw rod 42 is rotated to expand the sleeve 41 and extrude the second C-shaped component 2 and the third C-shaped component 3 to form connection between pretightening force and the duct piece. The stopper member 5 mainly restricts the displacement direction of the left sleeve portion 411, and the leg portion thereof may be welded to the web of the third C-shaped member 3, the top right side may be welded to the right sleeve portion 412, or the right flange 12 of the third C-shaped member 3. Since the right sleeve portion 412 is welded to the third C-shaped member 3, a torque reaction force balance is generated when the screw 42 rotates, and the left sleeve portion 411 moves to the left in fig. 5 (moves to the left along the x-axis).
1) And determining the connection strength and the number of connection points required by the longitudinal seam according to the structural calculation.
2) Processing each component and the anchoring piece thereof according to the figure; it should be noted that, in order to ensure that the required pre-tightening force is achieved at each connection point, the dimensions of the elastic plastic sleeve 43 and the full-thread steel bar 44 at each point are different, and slightly changed, so as to ensure that the connecting piece farther away from the jack forms an extrusion force on the third C-shaped member 3 and the second C-shaped member 2 earlier.
3) When the duct piece is manufactured, the first C-shaped component 1 and the second C-shaped component 2 are respectively embedded in the corresponding duct pieces;
4) Assembling the pipe pieces according to a conventional pipe piece assembling mode;
5) Inserting a third C-shaped member 3 into the cavity between the second C-shaped member 2 and the first C-shaped member 1 (the "u" -shaped groove);
6) The plastic sleeve 43 is rotatably mounted on the full-thread steel bar 44 according to the designed connection point position. The plastic sleeve 43 is made of high-strength elastic plastic (e.g., polyamide, rigid PVC, etc.), has threads on its inner side, and can be engaged with the full-thread steel bar 44, and has inverted teeth on its outer side, the outer diameter of the inverted teeth being larger than the transverse space (x-direction) formed between the second C-shaped member 2 and the third C-shaped member 3. The length of the plastic sleeve 43 is such that the engaging force with the full-thread steel bar 44 is greater than the friction force during later installation.
7) The sleeve member 4 is extruded into a cavity (square groove) between the second C-shaped member 2 and the third C-shaped member 3 along the z direction (tunnel longitudinal direction), and the second C-shaped member 2 and the third C-shaped member 3 are extruded, so that the connecting force of a joint surface is generated, and the segment connection is completed.
8) According to the durability condition of the tunnel environment, whether to carry out grouting and filling compaction on the hollow cavity (U-shaped groove) is determined.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a shield tunnel section of jurisdiction longitudinal joint does not have hand hole multiple spot connection structure which characterized in that: comprises a first shield segment, a second shield segment, a first C-shaped member, a second C-shaped member and a connecting component for connecting the first shield segment and the second shield segment, wherein the first shield segment and the second shield segment are connected along the circumferential direction of the tunnel, the first C-shaped member is pre-buried in the first shield segment, the second C-shaped member is pre-buried in the second shield segment, the first C-shaped member is provided with a first connecting groove extending along the longitudinal direction of the tunnel, the second C-shaped member is provided with a second connecting groove extending along the longitudinal direction of the tunnel, the connecting component extends along the longitudinal direction of the tunnel, one end of the connecting component extends into the first connecting groove, the other end of the connecting component extends into the second connecting groove,
the first connecting groove and the second connecting groove are communicated to form a U-shaped groove, the connecting assembly comprises a third C-shaped member and a sleeve member, the third C-shaped member and the sleeve member both extend along a longitudinal seam of the tunnel, the cross section of the third C-shaped member is U-shaped, the third C-shaped member comprises a web plate, a left flange plate and a right flange plate, the left flange plate is connected with the right flange plate through the web plate, the third C-shaped member extends into the U-shaped groove, a top plate and a left side plate of the second C-shaped member and the web plate and the right flange plate of the third C-shaped member enclose a square groove for the sleeve member to extend into and extrude so as to generate a connecting force of a seam surface to complete the connection of the first shield segment and the second shield segment,
the longitudinal seam hand-hole-free multipoint connecting structure of the shield tunnel segment further comprises a limiting member, the third C-shaped member, the sleeve member and the limiting member are combined into a whole and extend into a U-shaped groove, the sleeve member is positioned in the third C-shaped member, the sleeve member is arranged close to the right flange plate, the limiting member covers the sleeve member and is vertical to the longitudinal direction of the tunnel, the section of the whole formed by the third C-shaped member, the sleeve member and the limiting member is U-shaped, the sleeve member comprises a screw and a plurality of sleeves, the screw extends longitudinally along the tunnel, a plurality of conical sections distributed longitudinally along the tunnel are arranged on the screw, the sleeves are sleeved on the screw, the sleeves are distributed longitudinally along the tunnel at intervals, the sleeves are provided with conical holes matched with the conical sections, and external threads are arranged on the conical surfaces of the conical sections, the inner wall of the taper hole is provided with internal threads matched with the external threads, the sleeves and the taper sections are matched in a one-to-one correspondence mode, the sleeves are divided into a left sleeve part and a right sleeve part along the longitudinal direction of the tunnel, the right sleeve part is welded with a third C-shaped component, the limiting component covers the sleeves, the limiting component comprises a left baffle, a right baffle and a top plate for connecting the left baffle and the right baffle, the right baffle is positioned between the right sleeve part and a right flange plate of the third C-shaped component, the right baffle is welded with the right sleeve part, the bottom of the right baffle is welded with a web plate of the third C-shaped component, the left baffle is positioned between the left side plate and the left sleeve part, the left baffle is closely attached to the left sleeve part, the taper hole formed by enclosing of the left sleeve part and the right sleeve part enables the taper section of the screw to extend into and extrude, and the taper section rotates to extend into the extruding process, the left sleeve part and the right sleeve part are separated, and the second C-shaped component and the third C-shaped component are extruded, so that the connecting force of a joint surface is generated, the connection of the first shield segment and the second shield segment is completed, and a certain pre-tightening force is provided.
2. The shield tunnel segment longitudinal seam hand-hole-free multipoint connection structure of claim 1, wherein: the limiting members are distributed at intervals along the longitudinal direction of the tunnel, and correspond to the sleeves one by one.
3. The shield tunnel segment longitudinal seam hand-hole-free multipoint connection structure of claim 1, wherein: the right side of the top plate of the limiting component is welded with the right sleeve part, and the right baffle of the limiting component is welded with the right flange plate of the third C-shaped component.
4. The shield tunnel segment longitudinal seam hand-hole-free multipoint connection structure of claim 1, characterized in that: the sleeve is cubic.
5. The shield tunnel segment longitudinal seam hand-hole-free multipoint connection structure of claim 1, wherein: the sleeve component comprises a full-thread steel bar and a plurality of elastic plastic sleeves, the full-thread steel bar extends along a longitudinal seam of the tunnel, the elastic plastic sleeves are sleeved on the full-thread steel bar and are distributed at intervals along the longitudinal direction of the tunnel, the longitudinal cross section of each plastic sleeve perpendicular to the tunnel is annular, the inner side wall of each plastic sleeve is provided with an internal thread matched with the full-thread steel bar, each plastic sleeve is inverted tooth-shaped along the longitudinal cross section of the tunnel, and the outer diameter of each plastic sleeve is larger than the transverse aperture of the square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210380907.XA CN114810135B (en) | 2022-04-12 | 2022-04-12 | Shield tunnel section of jurisdiction longitudinal joint does not have hand hole multiple spot connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210380907.XA CN114810135B (en) | 2022-04-12 | 2022-04-12 | Shield tunnel section of jurisdiction longitudinal joint does not have hand hole multiple spot connection structure |
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| CN114810135A CN114810135A (en) | 2022-07-29 |
| CN114810135B true CN114810135B (en) | 2023-02-14 |
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|---|---|
| CN114810135A (en) | 2022-07-29 |
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