A diaphragm wall guide structure and method of construction

Abstract

The application discloses a continuous wall guiding structure and a construction method, wherein the continuous wall guiding structure comprises two rows of guide walls arranged in parallel along the jacking direction of the continuous wall, the continuous wall comprises a plurality of continuous wall units, a space for jacking the plurality of continuous wall units is formed between the two guide walls, a guiding device is arranged above the guide walls, a guide groove is arranged at the top of the guide walls along the jacking direction of the continuous wall units, a rolling part is arranged between the bottom of the guiding device and the guide groove, and a rope for lifting the continuous wall units is arranged on the guiding device. The continuous wall guiding structure can prevent the displacement of the continuous wall during the jacking construction process, and can ensure the construction quality of the continuous wall and the fast construction speed even under special geological conditions.

Description

TECHNICAL FIELD

[0001] The application relates to a continuous wall guiding structure and a construction method. BACKGROUND

[0002] At present, for the construction of a continuous wall, the quality of a cast-in-place continuous wall is poor, and the phenomenon of exposed steel bars often occurs; a large amount of waste mud is generated in the construction process of the cast-in-place continuous wall, and the waste mud is troublesome to deal with; therefore, the jacking method can be used to solve the above problems; however, the construction process of the underground continuous wall is invisible, and in the jacking construction process of the continuous wall, the continuous wall body is prone to displacement; and in some special geological conditions, such as silt soil, deep sand layer, alluvial layer containing boulders and the like, the construction difficulty is particularly great, and the construction quality and construction progress of the continuous wall are affected. SUMMARY

[0003] The application aims to at least solve one of the problems in the prior art, and provides a continuous wall guiding structure and a construction method, wherein the continuous wall guiding structure can prevent the continuous wall from being displaced in the jacking construction process.

[0004] The application adopts the technical scheme that:

[0005] A continuous wall guiding structure comprises two rows of guide walls arranged in parallel along the jacking direction of the continuous wall, the continuous wall comprises a plurality of continuous wall units, a space for jacking the plurality of continuous wall units is formed between the two guide walls, a guiding device is arranged above the guide walls, a guide groove is arranged at the top of the guide walls along the jacking direction of the continuous wall units, a rolling component is arranged between the bottom of the guiding device and the guide groove, and a rope for lifting the continuous wall units is arranged on the guiding device.

[0006] Preferably, the bottom of the guiding device is provided with a limiting component for preventing the continuous wall units from being displaced upward, the top end of the limiting component is connected with the guiding device, and the bottom end of the limiting component extends downward and abuts against the continuous wall units.

[0007] Preferably, the guide wall comprises a guiding portion located on both sides of the continuous wall unit and a first supporting portion for mounting the guide groove, and the first supporting portion is arranged at the top of the guiding portion.

[0008] Preferably, the guide wall is in the shape of an inverted "L", the guide groove is arranged on the upper surface of the first supporting portion, the inner side of the first supporting portion is connected with the guiding portion, and the outer side of the first supporting portion extends away from the continuous wall unit.

[0009] Preferably, the first support part is provided with a pre-embedded steel plate at the top, which is welded to the guide groove.

[0010] Preferably, the first support part is provided with a pre-embedded steel bar inside, which is fixedly connected to the pre-embedded steel plate at the top and extends into the inside of the first support part.

[0011] Preferably, a fixing device is arranged between the continuous wall unit and the guide device, which is provided with a first through hole for the rope, the top of the continuous wall unit is provided with a pre-embedded bolt, the fixing device is provided with a second through hole for the pre-embedded bolt, and the pre-embedded bolt is connected to the fixing device through a nut.

[0012] Preferably, the fixing device comprises two support plates for the pre-embedded bolt, and a plurality of rib plates are arranged between the two support plates, and the first through hole is formed between adjacent rib plates.

[0013] Preferably, the guide device comprises a second support part and a lifting part, the second support part is arranged above the two guide walls, the lifting part is arranged between the two second support parts, and the rope is connected to the lifting part.

[0014] The application also provides a construction method using the continuous wall guide structure, which comprises the following steps:

[0015] Step one: constructing two rows of guide walls in the direction of the top pushing of the continuous wall unit;

[0016] Step two: installing the guide groove at the top of the guide wall;

[0017] Step three: installing the rolling part in the guide groove;

[0018] Step four: installing the guide device above the guide wall;

[0019] Step five: connecting the continuous wall unit to the guide device through the rope after the first section of the continuous wall unit is pushed out of the working well;

[0020] Step six: adjusting the direction of the guide device after the continuous wall unit is pushed out, and then pushing the next section of the continuous wall unit.

[0021] The continuous wall guiding structure has at least one of the following advantages or beneficial effects: the continuous wall guiding structure is used in the construction process, the guide wall is constructed first, the guide groove and the guiding device are installed on the guide wall, the continuous wall unit is hoisted below the guiding device through the rope, the continuous wall unit is jacked in the space between the two rows of guide walls under the action of the jacking force, the two rows of guide walls can avoid the continuous wall unit from deviating to the two sides or toppling, the guiding device plays a guiding role on the movement direction of the continuous wall unit, the continuous wall unit can be prevented from sinking under the action of gravity, the rolling part reduces the resistance of the guiding device in the moving process, the guiding function is realized, the continuous wall is constructed by using the continuous wall guiding structure, the displacement of the continuous wall in the jacking construction process is avoided, and even under special geological conditions, the construction quality of the continuous wall is good, and the construction speed is fast.

[0022] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a top view of one embodiment of the present application;

[0025] Figure 2 is a side view of one embodiment of the present application; Figure 1 is a sectional view at A-A in FIG. 1;

[0026] Figure 3 is a sectional view at B-B in FIG. 1; Figure 1 is a sectional view at B-B in FIG. 1;

[0027] Figure 4 is a sectional view at C-C in FIG. 1; Figure 1 is a sectional view at C-C in FIG. 1;

[0028] Figure 5 is a structural schematic view of the hoisting device in the present application;

[0029] Figure 6 is a structural schematic view of the connecting structure of the guide groove in the present application. DETAILED DESCRIPTION

[0030] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the accompanying drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0031] In the present application, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical solutions of the present application, and does not indicate or imply that the indicated technical features must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and "greater than", "less than", "more than" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In the description of the present application, if "first" and "second" are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0033] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected, or can be electrically connected or capable of communicating with each other; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solutions.

[0034] Among them, Figure 1 , Figure 2 and Figure 3 The reference direction coordinate system of the embodiment of the present application is given, and the embodiment of the present application is described below in combination with the directions shown in Figure 1 , Figure 2 and Figure 3 .

[0035] The embodiment of the present application provides a continuous wall guide structure, referring to Figure 1 , comprising two rows of guide walls 100 arranged in parallel along the direction of pushing the continuous wall, the continuous wall comprises a plurality of continuous wall units 200, a space 110 for pushing the plurality of continuous wall units 200 is formed between the two rows of guide walls 100, a guide device 300 is arranged above the guide wall 100, and a guide groove 400 is arranged at the top of the guide wall 100 along the direction of pushing the continuous wall unit 200, referring to Figure 3The bottom of the guide device 300 is provided with a rolling component 410 between the guide groove 400, and the guide device 300 is provided with a rope 500 for lifting the continuous wall unit 200. The continuous wall guide structure is first constructed with the guide wall 100, and the guide groove 400 and the guide device 300 are installed on the guide wall 100. The continuous wall unit 200 is lifted below the guide device 300 through the rope 500, and the continuous wall unit 200 is pushed in the space 110 between the two rows of guide walls 100 under the action of the pushing force. The two rows of guide walls 100 can avoid the continuous wall unit 200 from deviating to both sides or toppling. The guide device 300 plays a guiding role in the movement direction of the continuous wall unit 200, and can avoid the continuous wall unit 200 from sinking under the action of gravity. The rolling component 410 reduces the resistance of the guide device 300 during movement, so that the guiding function is realized. The continuous wall guide structure ensures that the continuous wall is not easy to displace during the pushing construction process. Even under special geological conditions, the construction quality of the continuous wall is good, and the construction speed is fast.

[0036] As a preferred embodiment of the present application, see Figure 4 The bottom of the guide device 300 is provided with a limiting component 310 for preventing the continuous wall unit 200 from deviating upward. The top end of the limiting component 310 is connected with the guide device 300, and the bottom end of the limiting component 310 extends downward and abuts against the continuous wall unit 200, so as to limit the continuous wall unit 200 from floating upward during the pushing process.

[0037] See Figure 3 、 Figure 4 The guide wall 100 includes a guide portion 120 located on both sides of the continuous wall unit 200 and a first supporting portion 130 for installing the guide groove 400. The first supporting portion 130 is arranged at the top of the guide portion 120.

[0038] As a preferred embodiment of the present application, see Figure 3 、 Figure 4 The guide wall 100 is in the shape of an inverted "L". The guide groove 400 is arranged on the upper surface of the first supporting portion 130. The inner side of the first supporting portion 130 is connected with the guide portion 120, and the outer side of the first supporting portion 130 extends away from the continuous wall unit 200, so as to ensure the structural stability of the guide wall 100.

[0039] In some embodiments, see Figure 6 The first supporting portion 130 is provided with a pre-buried steel plate 131 at the top. The pre-buried steel plate 131 is welded and connected with the guide groove 400, so as to ensure the stability of the connection structure.

[0040] See Figure 6 The first supporting portion 130 is provided with a pre-buried steel bar 132. The top of the pre-buried steel bar 132 is fixedly connected with the pre-buried steel plate 131, and the pre-buried steel bar 132 extends into the interior of the first supporting portion 130.

[0041] Referring to Figure 3 , the continuous wall unit 200 and the guide device 300 are provided with a fixing device 600, referring to Figure 5 , the fixing device 600 is provided with a first through hole 610 for passing through the rope 500, the top of the continuous wall unit 200 is provided with a pre-buried bolt 210, the fixing device 600 is provided with a second through hole for passing through the pre-buried bolt 210, and the pre-buried bolt 210 is connected with the fixing device 600 through a nut.

[0042] In some embodiments, referring to Figure 5 , the fixing device 600 comprises two support plates 620 for passing through the pre-buried bolt 210, a plurality of rib plates 630 are arranged between the two support plates 620, the first through hole 610 is formed between adjacent rib plates 630, preferably, the rib plates 630 are selected to be more than 3, the rib plates 630 are arranged in the vertical direction, and the support plates 620 are arranged in the horizontal direction.

[0043] As a preferred embodiment of the present application, referring to Figure 6 , the rolling component 410 comprises a plurality of rolling balls arranged in the guide groove 400, and the rolling balls reduce the friction of the guide device 300 in the moving process.

[0044] Referring to Figure 3 , Figure 4 , the guide device 300 comprises a second support part 320 and a lifting part 330, the two rows of guide walls 100 are both provided with the second support part 320, the lifting part 330 is arranged between the two second support parts 320, the rope 500 is connected with the lifting part 330, and the structural stability of the guide device 300 is ensured.

[0045] The present application also provides a foundation treatment method using the continuous wall guide structure, comprising the following steps:

[0046] Step one: two rows of guide walls are constructed in the pushing direction of the continuous wall unit, the construction starts from the middle and goes to both sides, a reinforced concrete structure is adopted, the thickness of the concrete in the groove is 30 cm, the thickness of the wall on the ground part should not be less than 50 cm because the guide system and the underground continuous wall need to bear the gravity, and the width is about 1.5 m;

[0047] Step two: the guide groove is installed on the top of the guide wall, the guide groove adopts a segmented prefabrication construction method, the size specification and the concrete grade of the guide groove are determined in advance and are prefabricated outside the field, the connecting bolts are pre-buried according to the width of the guide groove, the guide groove plate adopts a full-length cast-in-place method, and the expansion joints are preferably arranged every 15-20 m;

[0048] Step three: a layer of solid lubricating oil is laid in the guide groove, and then the rolling component is installed in the guide groove, the rolling component comprises a plurality of steel balls, and the diameter of the steel balls is preferably less than 0.5 cm;

[0049] Step four: install the guiding device above the guide wall, the guiding device is prefabricated in advance outside the site, and then it is moved to the top pushing working well to check the stability and resistance of the guiding device;

[0050] Step five: after the first section of the continuous wall unit is pushed out of the working well, the rope is used to connect the continuous wall unit with the guiding device, and preferably, the stable connection between the continuous wall unit and the guiding device is realized through the fixing device;

[0051] Step six: after the continuous wall unit is pushed, the direction of the guiding device is adjusted, and the next section of the continuous wall unit is pushed, when the continuous wall unit is pushed, the steel balls in the guiding groove should be fully laid in the direction of the pushing for 3 sections of the underground continuous wall, and the measures for preventing the steel balls from overflowing at both ends should be taken, the steel balls are supplemented while the pushing is carried out, and the assembly type underground continuous wall is assembled according to the process of excavation, pushing, installation, grouting and excavation section.

[0052] In the description of the present specification, the description of the terms "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are included in the scope defined by the claims of the present application.

Claims

1. A continuous wall guiding structure, characterized in that: The system includes two rows of guide walls arranged parallel to each other along the jacking direction of the continuous wall. The continuous wall includes multiple continuous wall units. A space for jacking the multiple continuous wall units is formed between two of the guide walls. A guide device is provided above the guide wall. A guide groove is provided at the top of the guide wall along the jacking direction of the continuous wall unit. A rolling component is provided between the bottom of the guide device and the guide groove. A rope for suspending the continuous wall unit is provided on the guide device. A limiting component for preventing the continuous wall unit from shifting upward is provided at the bottom of the guide device. The top end of the limiting component is connected to the guide device, and the bottom end of the limiting component extends downward and abuts against the continuous wall unit.

2. The continuous wall guiding structure according to claim 1, characterized in that: The guide wall includes guide portions located on both sides of the continuous wall unit and a first support portion for installing the guide groove, the first support portion being disposed on the top of the guide portion.

3. The continuous wall guiding structure according to claim 2, characterized in that: The guide wall is inverted "L" shape, the guide groove is provided on the upper surface of the first support part, the inner side of the first support part is connected to the guide part, and the outer side of the first support part extends away from the continuous wall unit.

4. The continuous wall guiding structure according to claim 2, characterized in that: The top of the first support is provided with a pre-embedded steel plate, which is welded to the guide groove.

5. The continuous wall guiding structure according to claim 4, characterized in that: The first support portion is provided with embedded steel bars, the top of which is fixedly connected to the embedded steel plate, and the bottom of which extends into the interior of the first support portion.

6. The continuous wall guiding structure according to claim 1, characterized in that: A fixing device is provided between the continuous wall unit and the guide device. The fixing device has a first through hole for the rope to pass through. The top of the continuous wall unit is provided with a pre-embedded bolt. The fixing device has a second through hole for the pre-embedded bolt to pass through. The pre-embedded bolt is connected to the fixing device by a nut.

7. The continuous wall guiding structure according to claim 6, characterized in that: The fixing device includes two support plates for passing through the pre-embedded bolts, and multiple ribs are provided between the two support plates, with the first through hole formed between adjacent ribs.

8. The continuous wall guiding structure according to claim 1, characterized in that: The guiding device includes a second support part and a lifting part. The second support part is provided above each of the two guide walls, and the lifting part is located between the two second support parts. The rope is connected to the lifting part.

9. A construction method using the wall-continuing guide structure according to any one of claims 1 to 8, characterized in that... Includes the following steps: Step 1: Construct two rows of guide walls along the jacking direction of the continuous wall unit; Step 2: Install the guide groove on the top of the guide wall; Step 3: Install the rolling component inside the guide groove; Step 4: Install the guide device above the guide wall; Step 5: After the first section of the continuous wall unit is pushed out of the working shaft, the continuous wall unit is connected to the guide device using the rope; Step Six: After pushing the continuous wall unit, adjust the direction of the guide device, and then push the next section of the continuous wall unit.

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