Ground anchor special for pile driving barge
By adopting a structure combining steel main beams and secondary beams with a rubble backfill layer in the ground anchor of the piling vessel, the problems of economic efficiency and high construction difficulty of existing anchoring devices are solved, and efficient and economical positioning and fixing of the piling vessel is achieved.
Patent Information
- Application Number
- CN202422106229.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Existing pile driving vessel anchoring devices are uneconomical, difficult to construct, and require a large amount of work for inserting anchor bolts and burying ground anchors, making it difficult to meet the requirements for high-precision pile driving.
The structure employs a main steel beam and secondary steel beam within the anchor pit, combined with a riprap backfill layer and a clay cover layer, to enhance the soil contact area and weight. These are then connected by steel wire ropes to form a stable anchor structure.
It improves the pull-out resistance of ground anchors, reduces construction workload, increases construction efficiency, and achieves both economy and stability of ground anchors, making it suitable for positioning and fixing of piling vessels.
Smart Images
Figure CN223660774U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a piling ship ground anchor technical field, concretely is a special ground anchor for piling ship. BACKGROUND
[0002] As the main port facilities at present, high-pile wharf is widely used in inland rivers and coastal areas, and the pile foundation of inland high-pile wharf is usually near water and shore, and steel pipe pile or prestressed concrete pile is used, and the pile sinking construction is usually carried out on water by piling ship, so the precision control of pile sinking on water is very critical, and the positioning precision of piling ship determines the pile sinking precision, and the piling ship is positioned by anchor cable, and there are eight anchor cables in two directions, and the back cable of the piling ship is usually fixed by throwing anchor, and the front cable is connected with the anchoring device on the shore slope or river embankment, so a plurality of anchoring devices with certain tensile and anti-pulling capacity and stable and reliable are arranged on the shore slope or river embankment.
[0003] The prior art generally uses inserted anchor rod, the anchor rod is inserted into the shore slope or river embankment, and the friction force between the anchor rod and soil is used to resist the pulling force of the anchor cable generated when the piling ship sinks the pile, or the anchor rope is buried, the anchor rope is deeply buried in the shore slope or river embankment, and the weight of the soil on the anchor rope is used to resist the pulling force of the anchor cable generated when the piling ship sinks the pile.
[0004] The anchoring device of the inserted anchor rod has high requirements for the anchor rod, and a certain length and diameter are required to generate sufficient friction force with the soil, and the anchoring device has the characteristics of poor economy and great construction difficulty, which greatly limits the use of the inserted anchor rod, and the buried ground anchor is relatively economical, but the upper part of the buried anchor rope of the ground anchor must have sufficient soil weight, and the buried anchor rope must have sufficient contact area with the soil, and the characteristics of great excavation depth and large earthwork backfill amount usually exist, so there is certain limitation, and therefore the special ground anchor for piling ship is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In view of the defects of the prior art, the utility model provides a special ground anchor for piling ship, which has the advantages of simple manufacturing, convenient construction, less excavation and backfill amount, and stable and reliable, solves the problem that the anchoring device of the inserted anchor rod has high requirements for the anchor rod, a certain length and diameter are required to generate sufficient friction force with the soil, and the anchoring device has the characteristics of poor economy and great construction difficulty, which greatly limits the use of the inserted anchor rod, and the buried ground anchor is relatively economical, but the upper part of the buried anchor rope of the ground anchor must have sufficient soil weight, and the buried anchor rope must have sufficient contact area with the soil, and the characteristics of great excavation depth and large earthwork backfill amount usually exist, so there is certain limitation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a special ground anchor for piling vessels, comprising an anchor pit, wherein a steel main beam is placed inside the anchor pit, and four steel secondary beams are fixedly connected to the steel main beam, all four steel secondary beams being welded to the steel main beam.
[0007] The outer perimeter of the main steel beam is fitted with a steel wire rope that passes through the ground anchor pit and extends to its top. The ground anchor pit is filled with a rubble backfill layer. The top surface of the rubble backfill layer is covered with a clay covering layer. The main steel beam and four secondary steel beams are all in contact with the rubble backfill layer.
[0008] Furthermore, the four steel secondary beams are linearly and equidistantly distributed from front to back, with the interval between two adjacent steel secondary beams being between 400 and 600 millimeters.
[0009] Furthermore, the rubble backfill layer is backfilled in layers and pressed onto the main steel beam and secondary steel beam, while the clay cover layer is pressed firmly onto the rubble backfill layer in layers.
[0010] Furthermore, the soil of the anchor pit is mainly composed of a rubble backfill layer, and the clay cover layer is a protective layer at the top of the anchor pit with a relatively small thickness. The rubble backfill layer and the clay cover layer are backfilled and compacted in layers, with a compaction thickness not exceeding 500 mm.
[0011] Furthermore, the wire rope is looped in the middle of the main steel beam, with one end of the wire rope extending out of the anchor pit by about two meters, leaving space for the front of the piling vessel to be secured.
[0012] Furthermore, both the main steel beam and the secondary steel beam are I-shaped, and all four secondary steel beams are located on top of the main steel beam.
[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0014] 1. The special ground anchor for this piling vessel uses rubble backfilling in the anchor pit, which increases the weight of the soil in the pit. The wire rope is connected to the double-layer steel structure, which increases the contact area between the load-bearing components and the soil, and has good tensile strength. It can effectively fix the piling vessel. After the ground anchor is used, the wire rope and steel structure can be recycled and reused, which is economical.
[0015] 2. The special ground anchor for this piling vessel uses double-layer steel for its load-bearing components, which has a large contact area with the soil, making installation and removal simple and easy. This reduces the workload of ground anchor construction and improves work efficiency. The ground anchor is backfilled with rubble, which has a higher density and weight than plain fill, resulting in greater pressure on the wire rope, thus improving the tensile strength of the ground anchor and reducing the excavation size and depth of the ground anchor. Attached Figure Description
[0016] Fig. 1 This is a schematic diagram of the structure of this utility model;
[0017] Fig. 2 This is a schematic diagram of the structure of this utility model on the right side;
[0018] Fig. 3 This is a top view of the structure of this utility model.
[0019] In the diagram: 1. Steel wire rope, 2. Steel main beam, 3. Steel secondary beam, 4. Stone backfill layer, 5. Clay cover layer, 6. Ground anchor pit. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1: Please refer to Figs. 1 to 3 This embodiment of a piling vessel-specific ground anchor includes an anchor pit 6, inside which a steel main beam 2 is placed. Four steel secondary beams 3 are fixedly connected to the steel main beam 2. The four steel secondary beams 3 are all welded to the steel main beam 2. The four steel secondary beams 3 are linearly and equidistantly distributed from front to back. The interval between two adjacent steel secondary beams 3 is between 400 and 600 millimeters. Both the steel main beam 2 and the steel secondary beams 3 are I-shaped, and the four steel secondary beams 3 are all located on top of the steel main beam 2.
[0022] A steel wire rope 1 is fitted on the outer perimeter of the main steel beam 2, with one end penetrating the ground anchor pit 6 and extending to its top. The steel wire rope 1 is looped in the middle of the main steel beam 2, with one end of the steel wire rope 1 extending out of the ground anchor pit 6 by about two meters, leaving space for the front of the piling vessel to catch the rope. The interior of the ground anchor pit 6 is filled with a rubble backfill layer 4, and a clay covering layer 5 is laid on the top surface of the rubble backfill layer 4. The main steel beam 2 and the four secondary steel beams 3 are all in contact with the rubble backfill layer 4.
[0023] Among them, the rubble backfill layer 4 is backfilled in layers and pressed on the main steel beam 2 and the secondary steel beam 3. The clay cover layer 5 is compacted in layers on the rubble backfill layer 4. The soil of the ground anchor pit 6 is mainly composed of the rubble backfill layer 4. The clay cover layer 5 is a protective layer at the top of the ground anchor pit. The layer thickness is relatively small. The rubble backfill layer 4 and the clay cover layer 5 are backfilled and compacted in layers, and the compaction thickness does not exceed 500 mm.
[0024] It should be noted that the load-bearing components at the bottom of the ground anchor are steel sections, but steel pipes and sleepers can also be used as substitutes. The backfill material for the ground anchor is rubble, but concrete blocks can also be used as substitutes. Furthermore, the ground anchor covering layer is made of clay, but concrete can also be used as substitutes.
[0025] Specifically, the anchor pit 6 is excavated. After excavation, the bottom of the pit is leveled and compacted. The load-bearing main steel beam 2 is placed in the pit. A steel wire rope 1 of a certain length is threaded through the middle of the main steel beam 2, with the other end of the steel wire rope 1 extending out of the pit. Load-bearing secondary steel beams 3 are placed on the main steel beam 2 at certain intervals. After the double-layer load-bearing steel beams are installed, rubble is backfilled in layers to the ground. After the rubble is compacted, clay is covered on top of the rubble. After the clay is compacted, the anchor can be put into use. Before the pile is driven, the front cable of the pile driving vessel is tied to the ground anchor, and the rear cable is directly anchored. When the pile is driven, the pull-out force generated by the pile driving vessel is transmitted to the steel wire rope 1 of the ground anchor through the front cable. The steel wire rope 1 transmits the force to the double-layer steel structure. Finally, the pull-out force is offset by the weight of the rubble backfill layer 4 and the clay cover layer 5 on the upper part of the double-layer steel structure. After the pile driving vessel has completed the pile driving, the clay cover layer 5 and the rubble backfill layer 4 are removed from top to bottom in sequence, and the steel structure and steel wire rope 1 are taken out for recycling.
[0026] The working principle of the above embodiments is as follows:
[0027] According to the design pile positions of the high-pile wharf, ground anchors are arranged at corresponding positions on the bank slope or river embankment. By calculating the pull-out force generated by the front cable when the piling vessel sinks the piles, the soil weight of the ground anchors, the size of the ground anchor pit 6, and the depth of the ground anchor pit 6 are determined. Based on the size and depth of the ground anchor pit 6, the ground anchor pit 6 is excavated. After the ground anchor pit 6 is excavated, the bottom of the pit is leveled and compacted. The load-bearing steel main beam 2 is placed at the bottom of the pit. A steel wire rope 1 of a certain length is inserted in the middle of the steel main beam 2, with the other end of the steel wire rope 1 extending out of the pit. Load-bearing steel secondary beams 3 are placed on the steel main beam 2 at certain intervals. After the load-bearing double-layer steel is installed, The rubble is backfilled in layers to the ground. After the rubble is compacted, clay is covered on top of the rubble. After the clay is compacted, the ground anchor can be put into use. Before the pile is driven, the front cable of the pile driving vessel is tied to the ground anchor, and the rear cable is directly anchored. During the pile driving, the pull-out force generated by the pile driving vessel is transmitted to the steel wire rope 1 of the ground anchor through the front cable. The steel wire rope 1 transmits the force to the double-layer steel structure. Finally, the pull-out force is offset by the weight of the rubble backfill layer 4 and the clay covering layer 5 on top of the double-layer steel structure. After the pile driving vessel has completed the pile driving, the clay covering layer 5 and the rubble backfill layer 4 are excavated from top to bottom, and the steel structure and steel wire rope 1 are taken out for recycling.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A special ground anchor for piling vessels, comprising an anchor pit (6), characterized in that: The anchor pit (6) contains a steel main beam (2), and four steel secondary beams (3) are fixedly connected to the steel main beam (2). All four steel secondary beams (3) are welded to the steel main beam (2). The outer perimeter of the main steel beam (2) is fitted with a steel wire rope (1) that passes through the ground anchor pit (6) and extends to its top. The ground anchor pit (6) is filled with a rubble backfill layer (4). The top surface of the rubble backfill layer (4) is covered with a clay covering layer (5). The main steel beam (2) and the four secondary steel beams (3) are all in contact with the rubble backfill layer (4).
2. The special ground anchor for a piling vessel according to claim 1, characterized in that: The four steel secondary beams (3) are linearly and equidistantly distributed from front to back, with the interval between two adjacent steel secondary beams (3) being between 400 and 600 millimeters.
3. The special ground anchor for a piling vessel according to claim 1, characterized in that: The rubble backfill layer (4) is backfilled in layers and pressed on the main steel beam (2) and the secondary steel beam (3). The clay cover layer (5) is pressed in layers onto the rubble backfill layer (4).
4. The special ground anchor for a piling vessel according to claim 3, characterized in that: The soil of the ground anchor pit (6) is mainly composed of a rubble backfill layer (4), and the clay cover layer (5) is a protective layer on the top of the ground anchor pit. The layer thickness is relatively small. The rubble backfill layer (4) and the clay cover layer (5) are backfilled and compacted in layers, and the compaction thickness does not exceed 500 mm.
5. A special ground anchor for a piling vessel according to claim 1, characterized in that: The wire rope (1) is looped in the middle of the main steel beam (2). One end of the wire rope (1) extends out of the ground anchor pit (6) with a length of about two meters, leaving space for the front of the piling vessel to be secured.
6. The special ground anchor for a piling vessel according to claim 1, characterized in that: The main steel beam (2) and the secondary steel beam (3) are both I-shaped, and the four secondary steel beams (3) are all located on top of the main steel beam (2).