CN2866593Y - Tie-row combination anchor structure of soft row revetment project in estuary - Google Patents

Abstract

The utility model relates to a tie-row combined anchoring structure for a soft bank revetment project in an estuary. The existing tie beams with anchor piles can only be poured at low tide, the construction time is short, and the strength is difficult to meet the design requirements. The technical scheme adopted by this utility model is: it is composed of prefabricated T-shaped anchor piles, prefabricated dry water platforms and cast-in-place concrete; Above the vertical pile body, the anchor pile head is located below the vertical pile body, and the end is vertically downward; the bottom surface of the short beam on the top of the anchor pile and the bottom surface of the prefabricated dry water platform are on the same horizontal plane, arranged at intervals, and there is cast-in-place concrete at the junction . The utility model overcomes the disadvantages of the poor bearing capacity of the silt beach in the estuary area and the short time of the low tide water level that can be constructed, so that the soft bank revetment project of the estuary has found a method that is not only convenient for construction, but also can stabilize the silt bank and the bank revetment project. Tie row anchor structure.

Description

Tie-row combination anchor structure of soft row revetment project in estuary

technical field

The utility model is a software row revetment project in an estuary soft row, which is convenient for construction and can stabilize the silt bank in the river mouth soft row revetment project. The "T" type anchor pile and the dry water platform are the main components. The tie-row combination anchoring structure.

Background technique

In the estuary, we often encounter the engineering measures of using soft row to protect the bank. In order to prevent the soft row from being moved by wind and waves, it is necessary to design a large concrete structure on the beach to hang the row. This kind of anchoring structure is not only costly, but also difficult to construct. larger. The beach in the estuary area is mostly silt. How to design a relatively simple and rowable anchoring structure on the silt foundation? This is a very real problem in the bank revetment engineering of the estuary.

In the inland river area, when encountering soft ground, we can use the frame beam structure with anchor piles to tie the row, and the sliding force of the row body will be transmitted to each anchor pile through the frame beam, so that the larger pulling force of the row can be decomposed and reduced. According to the sliding force of the row body and the bearing capacity of the single pile, the number of anchor piles required can be calculated. As long as the anchor piles are sufficient, the row body can be hung even on a soft foundation. Of course, the revetment project must also meet the local soil mass of the anchorage structure and the overall stability of the beach. During the construction, the prefabricated anchor piles are laid first, and then the tops of the piles are poured together with reinforced concrete frame beams to form a tie-up anchor structure, and then the tie-up and paving construction is carried out.

Due to the impact of tidal currents in the estuary area, the water level changes at any time. The tie-down beams with anchor piles can only be poured at low tide. Soon to be submerged by salt water, the strength of cast-in-place reinforced concrete row beams is difficult to meet the design requirements.

Contents of the invention

In order to overcome the difficulty of insufficient strength of cast-in-place concrete tie-line beams and the difficulty that the construction progress is affected by changes in tidal water levels, we also changed the tie-line beams to prefabrication to provide a combined tie-line anchorage structure for soft bank revetment works in estuaries.

The technical scheme of the utility model is: a combined anchoring structure for a soft bank revetment project in an estuary, which is characterized in that it is composed of a prefabricated T-shaped anchor pile, a prefabricated dry water platform (7) and cast-in-situ concrete (10); the prefabricated The T-shaped anchor pile is composed of a top short beam (1), a vertical pile body (3) and a pile head (5), wherein the top short beam (1) is located on the vertical pile body (3), and the pile head (5) is located on the top of the vertical pile body (3). The lower end of the vertical pile body is vertically downward; the bottom surface of the anchor pile short beam (1) and the bottom surface of the prefabricated dry water platform (7) are arranged at intervals on the same horizontal plane, and there is cast-in-place concrete (10) at the joint.

Furthermore, each short beam (1) has a steel bar hanging hook (2) on the longitudinal side, and a reserved steel bar head (4) is exposed at both ends of the transverse main reinforcement in the short beam (1).

Furthermore, the cross section of the prefabricated dry water platform (7) is stepped.

Furthermore, the steel bars in the prefabricated dry water platform (7) are respectively exposed with steel bar heads (8) and steel bar heads (9) at the two ends of the step shape, wherein the steel bar heads (8) and the two transverse ends of the T-shaped anchor pile short beam The reinforcing bar heads (4) are connected, and the reinforcing bar heads (9) are connected with the reserved reinforcing bar heads (9) of the adjacent prefabricated dry water platform (7).

Furthermore, there are no less than three reinforcing bar hooks (2) on each side.

Furthermore, there are not less than two groups of reserved reinforcing bar heads (4) on each side of the short beam (1).

Furthermore, the reference length of the vertical pile body (3) of the T-shaped anchor pile is 3-4m;

Furthermore, the cross-section of the vertical pile body (3) of the T-shaped anchor pile is rectangular or square.

Furthermore, the short vertical pile body (3) of the T-shaped anchor pile has main reinforcements and stirrups bearing stress.

Furthermore, the anchoring structure also has an additional anchor pile (12), and the additional anchor pile (12) is connected to the short beam (1) of the prefabricated T-shaped anchor pile through the additional anchor pile connecting beam (11).

Furthermore, in the design of the anchorage structure, about 50m (following the flow direction of the water) is generally used as a force unit for stability calculation, and uneven settlement joints (13) should be left every 50m or so, so that a certain dry-water platform can be divided into two sections. The middle is separated by several layers of linoleum.

The beneficial effect of adopting the above-mentioned technical scheme is:

1. Due to the small amount of cast-in-place concrete at the junction, it is easy to complete in a short period of time at low water levels, and the concrete can also meet the strength requirements after adding accelerators, so it is not afraid of being submerged in salt water; it overcomes frequent changes in tidal water levels and lays out Due to the difficulties brought by the construction, the anchorage structure of the row body, one of the key technologies in the soft row bank revetment project in the estuary area, has been solved in design and construction;

2. Since both the prefabricated dry water platform and the short beam of the anchor pile have connecting steel heads, the connection between the components is more reliable;

3. Since the tie-row composite anchoring structure can also have additional anchor piles, the anchoring structure has a greater bearing capacity to the soft row pair.

Description of drawings

Fig. 1 is the front view of prefabricated " T " type anchor pile;

Fig. 2 is the top view of prefabricated " T " type anchor pile;

Fig. 3 is the side view of prefabricated " T " type anchor pile;

Fig. 4 is the I-I sectional view of Fig. 1;

Fig. 5 is the front view of prefabricated dry water platform;

Fig. 6 is the top view of prefabricated dry water platform;

Fig. 7 is the side view of prefabricated dry water platform;

Fig. 8 is the overall schematic diagram of combined anchoring structure;

In the figure 1. The short beam at the top of the T-shaped anchor pile, 2. The steel bar hook on the short beam, 3. The vertical pile body of the T-shaped anchor pile, 4. The steel bar heads reserved at both ends of the main reinforcement in the short beam, 5. T-shaped anchor pile head, 6. Main reinforcement and stirrup in the anchor pile body, 7. Reinforced concrete prefabricated dry water platform, 8. Reserved steel bar head connected to the steel bar end of the T-shaped anchor pile short beam end, 9 .Reserve the steel bar head connected to the corresponding steel bar head of the adjacent dry water platform, 10. The cast-in-place concrete between the adjacent dry water platform and the top beam of the "T" anchor pile, 11. The connecting beam of the additional anchor pile, 12. Additional anchor piles, 13. Uneven settlement joints.

Detailed ways

As shown in Figure 1-8, the combined anchor structure of the estuary soft bank revetment project is composed of prefabricated T-shaped anchor piles, prefabricated dry water platform 7 and cast-in-place concrete 10; the prefabricated T-shaped anchor piles are composed of T-shaped anchor piles Top short beam 1, T-shaped anchor pile vertical pile body 3 and T-shaped anchor pile head 5, wherein the top short beam 1 is located above the vertical pile body 3, and the end of the anchor pile head 5 is located below the vertical pile body Vertically downward; each short beam has three steel bar hanging hooks 2 on the longitudinal side, and the main reinforcement in the short beam 1 has two sets of reserved steel bar heads 4 at each end of the beam; the cross section of the prefabricated dry water platform 7 is stepped shape; the cross-section of the vertical pile body 3 of the T-shaped anchor pile is rectangular or square; and the short beam 1 of the T-shaped anchor pile and the vertical pile body 3 all have stress-bearing main reinforcements and stirrups; the prefabricated dry water platform 7 There are also main bars and stirrups inside, and steel bar heads 8 and 9 are respectively reserved at the two ends of the step shape, wherein the steel bar heads 8 are connected with the steel bar heads 4 at the transverse ends of the short beam of the T-shaped anchor pile, and the steel bar heads 9 are connected with the corresponding The steel head 9 reserved adjacent to the prefabricated dry water platform 7 is connected; the short beam 1 on the top of the anchor pile and the prefabricated dry water platform 7 are arranged at intervals on the same horizontal plane, and there are cast-in-situ concrete 10 at the junction, and the vertical pile body of the T-shaped anchor pile 3 The reference length is 3-4m.

In some sections, the bank slope of the river bed is relatively steep, and the sliding force of the row body is relatively large, so that the single row of anchor piles cannot be pulled, so the second row of additional anchor piles 12 can be added, and the connecting beam 11 is used to connect them together in the middle; if two rows of anchor piles are not enough , the third row can be increased, and the additional anchor piles 12 of the second row are also connected with beams to form a frame with anchor piles. The anchoring structure leaves uneven settlement joints 13 on the dry water platform every 50m or so.

The construction process of the structure is as follows: before construction, the T-shaped anchor piles must be arranged according to the design, and the steel bar hanging row hook 2 on the top beam of the T-shaped anchor piles must be used to tie the rows. On the platform 7, weld the steel bar head 8 and the steel bar head 4 corresponding to the end of the T-shaped anchor pile beam, and also weld the corresponding steel bar head 9 adjacent to the dry water platform, then pour concrete 10, and hang the steel bar of the beam Row hook 2 and row body reinforcement draw ring tied thereon are all poured in the second-stage concrete 10, and second-stage concrete 10 and prefabricated dry water platform 7 are wiped level. Due to the small amount of concrete 10 in the second stage, it can be completed at each low tide level, and with the addition of quick-setting agent, the strength of the concrete can also meet the design requirements. Overcoming the difficulties brought about by the frequent changes of tidal water level, the design and construction of the row body anchorage structure, one of the key technologies in the soft row revetment engineering in the estuary area, have been solved.

Claims (10)

1. A tie-row composite anchoring structure for soft bank revetment works in estuaries, characterized in that: it is made up of prefabricated T-shaped anchor piles, prefabricated dry water platforms (7) and cast-in-situ concrete (10); the prefabricated T-shaped anchor piles consist of top Composed of a short beam (1), a vertical pile body (3) and a pile head (5), wherein the top short beam (1) is located on the vertical pile body (3), and the anchor pile head (5) is located on the vertical pile body Below: the bottom surface of the short beam (1) at the top of the anchor pile and the bottom surface of the prefabricated dry water platform (7) are on the same horizontal plane, arranged at intervals, and there is cast-in-situ concrete (10) at the junction. 2. the tie-row combination anchor structure of estuary soft body bank revetment project according to claim 1, it is characterized in that each short crossbeam longitudinal side has reinforcing bar to hang row hook (2), and the main reinforcement in short crossbeam (1) is in Each end of the beam has an exposed rebar head (4). 3. The tie-row combination anchor structure of the estuary soft bank revetment project according to claim 1, characterized in that the cross-section of the prefabricated dry water platform (7) is stepped. 4. the tie-row combined anchor structure of the estuary soft bank revetment project according to claim 3, is characterized in that, main reinforcement and stirrup are arranged in the prefabricated dry water platform (7), and the two ends of step shape are respectively reserved with reinforcing bar head (8) and steel bar head (9), wherein the steel bar head (8) is connected with the steel bar head (4) at both ends of the T-shaped anchor pile short cross beam transversely, and the steel bar head (9) is reserved for the adjacent prefabricated dry water platform (7) The steel bar heads (9) are connected. 5. The tie-row combination anchor structure of the estuary soft row bank revetment project according to claim 2, characterized in that there are no less than three row hooks (2) on one side of the steel bar. 6. The tie-and-row combined anchor structure of the estuary soft bank revetment project according to claim 2, characterized in that the reserved steel bar heads (4) on each side of the short beam (1) are not less than two groups. 7. The tie-row combined anchor structure of the estuary soft bank revetment project according to claim 1, characterized in that the reference length of the vertical pile body (3) of the T-shaped anchor pile is 3-4m. 8. The tie-row combined anchor structure of the estuary soft bank revetment project according to claim 1, characterized in that the cross-section of the vertical pile (3) of the T-shaped anchor pile is rectangular or square. 9. The tie-row combined anchor structure of the estuary soft bank revetment project according to claim 7, characterized in that the T-shaped anchor pile vertical pile (3) has a main reinforcement and a stirrup bearing stress. 10. according to claim 1 or 2 or 3 or 4 or 5 or 6 described estuary soft body row revetment engineering tie row combination anchor structure, it is characterized in that, this anchor structure also has additional anchor pile (12), additional anchor pile (12) Connect the short beam (1) of the prefabricated T-shaped anchor pile through the additional anchor pile connecting beam (11), and provide uneven settlement joints (13) on the dry water platform every 50m along the flow direction.

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