Ultra-long special-shaped building for soft and narrow beach land

Abstract

The invention relates to the technical field of special-purpose buildings or similar structures, and discloses a super-long special-shaped building for a soft and long and narrow beach land, which is characterized in that a soft soil layer on bedrock of the soft and long and narrow beach land is completely removed and then replaced with lime soil, and a pile foundation is completely constructed by a socketed pile, so that the foundation is reliable; redundancy is set for frame columns, steel reinforced concrete beams are used as frame beams, pre-compressive stress is applied to floor slabs, and super-long tower units are used, so that adverse effects caused by using socketed piles on brittle rock stratums are overcome; frame columns are completely used as a supporting structure, so that the floor height can be freely set, and building use is prevented from being affected by soaking in water; the tower building is arranged to be in a broken line shape, the concave position of the broken line is filled with the podium building, and all the socketed piles are connected into a whole through the raft, so that the building is not prone to overturning, and the shock resistance is improved; all the points are combined to solve various problems of building permanent buildings on the narrow and long river beach land, so that buildings can be built in the severe environment.

Description

Technical Field

[0001] The present invention relates to the technical field of buildings or similar structures for special purposes, and particularly to an extra-long special-shaped building for soft and narrow river beaches. Background Art

[0002] Many natural landscapes are excellent tourist destinations. However, the more spectacular a natural landscape is, the more adverse and remote its traffic and geological environment tend to be. That is to say, "the truly wondrous, strange, and extraordinary sights in the world are often found in places that are perilous and far away, and are rarely visited by people." This is easy to understand because the "uncanny workmanship of nature" is actually an uncontrollable destructive force, which is extremely intense geological activities, glacial activities, water erosion, wind erosion, etc. While shaping magnificent landscapes, they also bring extremely intense additional damage, randomly altering the surface and even deeper strata of the local area and even more distant regions, leaving rugged terrain and making the stress conditions of the foundation extremely complex and adverse. This makes the construction of roads and permanent buildings extremely difficult and unable to form permanent human settlements.

[0003] But not everyone can "have the will and the strength and not be led astray by others." The vast majority of people are not willing to overcome poor traffic conditions and endure rough food and accommodation in the wild just to see a magnificent view. "Where it is flat and near, there are many tourists; where it is dangerous and far, few people arrive." If a tourist attraction cannot provide good transportation and accommodation, even if the scenery is spectacular, it will be deserted. Among them, transportation is relatively easy to solve because it does not have requirements such as earthquake resistance and anti-overturning. However, solving the accommodation problem is very difficult. On the contrary, if the accommodation conditions at the scenic spot can be improved, it will immediately enhance the tourist experience, the number of visitors, and the willingness of tourists to consume.

[0004] Taking a waterfall as an example, it is a relatively monotonous landscape. Although it is truly spectacular, the viewing time that this spectacularity leaves for tourists is only a few glances. After traveling a long distance, tourists take a few glances and there is nothing else to see. Although there is more to a waterfall than this, the sunlight at a specific time of day interacting with the water mist of the waterfall forms a rainbow, and the scenery formed by the interaction of the waterfall with the sun, moon, stars, and clouds in the sky, the feeling of falling asleep under the roar of the waterfall, etc., are all excellent tourist resources. But these all require time and at least one day and one night of stay on the riverbank near the waterfall. However, standing in the water mist mixed with mud and sand for one day and one night is unacceptable to the vast majority of people. Therefore, it is necessary to build a viewing building on the riverbank near the waterfall to provide good food and accommodation for tourists, improving the tourist experience while increasing the number of visitors and income at the scenic spot.

[0005] The waterfall is located in a river section with a large drop, and at the same time the river flow velocity is extremely high, causing severe water erosion and downcutting of the strata, which makes the riverbank very narrow. The land available for building viewing architectures is a long and narrow strip, and a considerable part of it belongs to the floodplain. This makes it extremely difficult to build permanent buildings in this area. Taking the construction project of the Hukou Waterfall Scenic Area involved in the present invention as an example, according to the actual geological exploration and construction experience, there are the following difficulties in building permanent buildings on such riverbanks: 1. Soft foundation According to the drilling disclosure, the foundation soil of the site is mainly composed of recently artificially accumulated miscellaneous fill (Q4ml), silty sand (Q4al+pl), and Permian (P) sedimentary rocks, and the lithology is mainly composed of sandstone, muddy sandstone, mudstone, sandstone, etc.

[0006] Using silty sand as the bearing layer will not only lead to uncontrollable settlement and deformation, and cannot be firmly combined with the pile, but also has the risk of liquefaction after immersion in water. At the same time, the strength of muddy sandstone and mudstone is very low, and it is easy to deform or be damaged (as a result, the pile on the bedrock is damaged or the foundation is compressed / stretched). Since silty sand, muddy sandstone, and mudstone are all inevitable river sediments, the problem of soft foundation is unavoidable as long as permanent buildings are built on similar riverbanks.

[0007] 2. Extremely easy to overturn and difficult to resist earthquake Due to land use restrictions, the building must be built in a very long strip shape, and the aspect ratio will far exceed the usual convention of 1.5:1. This makes it a severely over-long type among "slab buildings", and it is easy to overturn along the short side direction. At the same time, the large aspect ratio makes the torsional stiffness and the stiffness in the short side direction of the building extremely poor, and it is easy to collapse in an earthquake due to insufficient stiffness.

[0008] 3. May be flooded For the buildings built on the riverbanks here, it is very difficult to completely avoid the floodplain for the foundation, resulting in the bottom of the building being flooded during the flood period. Summary of the invention

[0009] The present invention provides an extra-long special-shaped building for soft and narrow river beaches.

[0010] The technical problem to be solved is: permanent buildings built on riverbanks with large river flow velocities to meet the viewing needs face the problems of soft foundation, extremely easy to overturn and difficult to resist earthquake, and may be flooded.

[0011] To solve the above technical problems, the present invention adopts the following technical solution: an extra-long special-shaped building for soft and narrow river beaches, which is used to adapt to the narrow river beaches with unstable soil layers. From the bedrock, it includes replacement soil, rock-socketed piles inserted into the bedrock through the replacement soil, frame columns arranged on the rock-socketed piles, frame beams arranged on the frame columns, floor slabs arranged on the frame beams, and enclosure structures arranged on the periphery of the building; The tower of the super-long special-shaped building is in a zigzag shape and extends along the river bank, and the podium is filled in the notch of the zigzag; each section of the tower is an integral unit, and a structural joint is provided between adjacent tower units; In the reinforced concrete floor slab of each section of the tower unit, there is prestress parallel to the extension direction of this section of the tower unit and of the type of compressive stress; Among the tower units of each section, they are arranged in sequence from top to bottom along the river flow direction. The one at the front is denoted as the first unit, and the one at the back is denoted as the last unit. The roof of the first unit has prestress parallel to the extension direction of this section of the tower unit and of the type of tensile stress. There is a patio in the middle of the last unit, and the last unit expands outward around the patio to form a tubular structure.

[0012] Furthermore, in the reinforced concrete floor slab of the tower unit, there is an expansion concrete strengthening belt perpendicular to the extension direction of this section of the tower unit, which serves as a post-cast strip and applies compressive stress to the floor slab.

[0013] Furthermore, the prestress in the roof of the first unit is applied by the following structure: The roof of the first unit is a pitched roof that slopes obliquely downward from the first unit towards the upstream of the river. The pitched roof is a steel structure roof supported by columns. Among the columns supporting the pitched roof, the columns at the bottom of the pitched roof are reinforced concrete inclined columns, and the tops of the inclined columns tilt towards the upstream of the river.

[0014] Furthermore, each of the tower units is a super-long structure, the frame beam is a steel reinforced concrete beam, and the frame columns meet the following conditions: Condition 1: Remove any one of the frame columns, and the vertical load borne by the removed frame column is transferred to adjacent other frame columns without causing damage; Condition 2: Remove any one of the frame columns, and after adding a horizontal load equal to the self-weight of the removed frame column to the horizontal load borne by the removed frame column and applying it to adjacent other frame columns, no damage will be caused.

[0015] Furthermore, the super-long special-shaped building adopts a raft foundation, and the raft foundations of each tower unit and the podium are connected as a whole.

[0016] Furthermore, the rock-socketed piles are rotary drilled cast-in-place piles with the lower ends embedded in the bedrock. The pile caps at the tops of the rock-socketed piles are connected as a whole through the raft. During the construction process of the rock-socketed piles, the rock-socketed piles of the first unit are constructed first, then the rock-socketed piles of the last unit are constructed, and finally the remaining rock-socketed piles are constructed.

[0017] Furthermore, in the foundation pit of the super-long special-shaped building, the original soil layer above the bedrock is completely removed and replaced with backfill soil, and the backfill soil is 3:7 lime soil that is leveled and tamped.

[0018] Compared with the prior art, an ultra-long special-shaped building for soft and narrow river beaches of the present invention has the following beneficial effects: In the present invention, by completely removing the soft soil layer on the bedrock of the soft and narrow river beach foundation and then replacing it with lime soil (i.e., a mixture of lime and soil), and completely constructing the pile foundation with rock-socketed piles, the foundation is made firm, and it will not subside and liquefy even in case of flooding or earthquake, and the piles are completely unaffected by the soil layer state; By setting redundancy for the frame columns (collapse of some does not affect the force), using steel reinforced concrete beams as frame beams (to avoid fracture of the frame beams after collapse of some frame columns), applying pre-compressive stress to the floor slabs (to avoid being pulled apart), and using ultra-long (ensuring that each frame column is connected to enough other frame columns through frame beams) tower units, even if some frame columns collapse due to local damage of the rock stratum (mudstone is very brittle), a new stable force-bearing structure will be formed, and the seismic resistance of the building will not be affected because the pile foundation is completely constructed with rock-socketed piles; By completely using frame columns as the support structure, the storey height can be freely set, and it is allowed to set the low floors prone to flooding as large storey heights (equivalent to elevating the high floors), so as to avoid the influence of flooding on the use of the building; By setting the tower of the building as a folded line shape and filling the podium in the concave part of the folded line, without changing the actual length of the tower, the aspect ratio of the foundation and the overall aspect ratio of the building are greatly reduced, the stiffness and torsional stiffness of the building in the short direction are significantly improved, and all the rock-socketed piles are connected into one body through the raft, so that the overturning process of the building is interfered by all the rock-socketed piles, making the building not easy to overturn and improving the seismic resistance; By using a prestressed pitched roof in the first unit, the deformation of the foundation under the first unit (the upstream rock and soil slide / compress downward, causing the foundation at this place to be compressed) will not drive the roof to deflect downward, and by constructing the last unit as a cylinder, the deformation of the foundation under the last unit (the downstream rock and soil slide / compress downward, causing the foundation at this place to be stretched) will not affect the stability of the last unit.

[0019] Combining the above points, the problems of weak foundation, easy overturning, difficult seismic resistance and possible flooding when building a permanent building on a narrow river beach are overcome, enabling the building to be successfully constructed in such a harsh environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Structural schematic diagram of an ultra-long special-shaped building for soft and narrow river beaches of the present invention Figure 1 In the figure, the left side is the upstream direction of the river, and the right side is the downstream direction of the river. The same applies hereinafter; Figure 2 Structural schematic diagram of an ultra-long special-shaped building for soft and narrow river beaches of the present invention Figure 2 In the figure, the perspective is a top view; Figure 3 It is a schematic structural diagram of a sloping roof and inclined columns. Figure 4 It is the construction site contour and pile layout diagram of an ultra-long special-shaped building for soft and narrow river beaches according to the present invention. In the figure, 11 - first unit, 12 - last unit, 13 - middle unit, 2 - podium, 3 - rock-socketed pile, 4 - frame column, 5 - sloping roof, 6 - inclined column. Detailed implementation manners

[0021] Given the lack of a clear definition of the riverbank, the riverbank in this article refers to the area between the natural levee of the river and the valley slope of the river valley.

[0022] As Figure 1-2 shown, taking the Hukou Waterfall Scenic Area construction project applying the present invention as an example, an ultra-long special-shaped building for soft and narrow river beaches, which is used to adapt to the narrow river beach with unstable soil layers, includes, from the bedrock upwards, replacement soil, rock-socketed piles 3 inserted through the replacement soil into the bedrock, frame columns 4 arranged on the rock-socketed piles 3, frame beams arranged on the frame columns 4, floor slabs arranged on the frame beams, and enclosure structures (i.e., non-load-bearing walls) arranged on the periphery of the building; In the foundation pit of the ultra-long special-shaped building, the original soil layer above the bedrock is completely removed and replaced with replacement soil. In this embodiment, the replacement soil is lime-soil (a mixture of three parts by mass of lime and seven parts by mass of soil) that is leveled and compacted. Ordinarily speaking, it is almost an impossible task to remove all the soil on the bedrock and replace it with relatively firm lime-soil, but it is found that this is feasible in actual construction, and even by reasonably adjusting the design, the engineering quantity of the entire replacement process can be compressed to a very small degree. Specifically speaking, the soil layer on the river beach is basically all sediment. Due to water erosion and uneven deposition, there are some areas where the soil layer is significantly thinner. Excavation in these areas can greatly reduce the excavation workload. At the same time, by forcibly setting basements that are not originally needed (here, the basements are prone to waterlogging and are not originally suitable for setting basements. In this embodiment, two basements are set, with a floor height of 3.6 m for the -2nd basement and floor heights of 4.74 m / 4.54 m for the -1st basement), the backfilling workload can also be greatly reduced. At the same time, due to the proximity to the river, even if the basements are waterlogged, gravity drainage can be carried out through siphons or buried pipes (in fact, the basement floor is higher than the riverbed. Whether a buried pipe leading to the river is drilled through the formation or a siphon leading to the river is led from the basement floor, gravity drainage can be achieved), and the accumulated water can be quickly and low-cost removed. This part of the gravity drainage structure can be prepared during the construction stage, so that it can play a role during the construction process and the building's use process. In this embodiment, the thickness of the replaced lime-soil is not equal to the thickness of the removed soil. In fact, the thickest part is only 2.1 meters, and the thinnest part is only 0.5 meters. The uneven thickness is to ensure the site is flat because the surface of the bedrock is uneven.

[0023] In addition, since the building is entirely supported by the frame columns 4, the floor height of the building can be set very freely. In this embodiment, the first-floor height is 5.4 m, the second-floor height is 5.74 m, the third to fourth-floor heights are 3.9 m, and the fifth-floor height is 3.92 m. For the significantly higher first and second floors, except for the frame columns 4, there are basically no other structures (it is necessary to set flood-resistant enclosing structures, such as railings or glass curtain walls, or simply not set enclosing structures, and the decoration also needs to meet flood resistance requirements. At the same time, metal parts should be rust-proof, and foam materials should be avoided), which is equivalent to the main part of the building being a stilt house that is not afraid of flooding. At the same time, the view on the first and second floors is excellent and can be used for viewing. Generally speaking, the height of the first floor should ensure that the second floor is not flooded during the flood period of the river under normal circumstances, and the height of the second floor should ensure that the third floor is not flooded under the highest possible water level of the river.

[0024] Specifically, no accommodation is provided in all rooms on the first and second floors; no accommodation means that no one is allowed to sleep on these floors. There should be no unattended and unconscious state on the first and second floors, and people are only allowed to sleep on the floors that cannot be flooded by water at all. The ceiling of the first floor is higher than the 50-year recurrence interval highest water level of the river, and the ceiling of the second floor is higher than the historical highest water level of the river.

[0025] The towers of the super-long and irregular-shaped building are in a zigzag shape and extend along the riverbank; the podium 2 is filled in the notch of the zigzag; each section of the tower is an integral unit, and a structural joint is set between adjacent tower units; The purpose of doing this is to reduce the aspect ratio of the foundation and the overall aspect ratio of the building without changing the actual length of the tower, thereby enhancing the stiffness and torsional stiffness of the building in the short direction.

[0026] The reinforced concrete floor slabs of each section of the tower unit are all prestressed with prestress parallel to the extension direction of this section of the tower unit and of the type of compressive stress; Among each section of the tower units, arranged in sequence from top to bottom along the river flow direction, the frontmost is denoted as the first unit 11, and the rearmost is denoted as the last unit 12. The roof of the first unit 11 has prestress parallel to the extension direction of this section of the tower unit and of the type of tensile stress. A patio is opened in the middle of the last unit 12, and the last unit 12 is expanded outward around the patio to form a cylindrical structure.

[0027] For buildings on soft, narrow and long river beaches, in addition to the influence of the strata below the building, the influence of the strata in the upstream and downstream directions of the river (low bedrock strength and soft soil) also needs to be considered. The strata in the upstream direction tend to slip / compress downward. Even with a retaining wall, it cannot be completely avoided. The foundation of the first unit 11 will be shortened accordingly, causing the roof to deflect. Here, prestress tension is applied to the roof in advance to offset the tendency of the roof to shorten. The strata in the downstream direction tend to slip / compress downward, causing the foundation of the last unit 12 to be stretched. The last unit 12 needs to resist this stretching. Prestress compression in the floor slab in advance can offset this stretching to a certain extent, but this is not enough. Therefore, in the present invention, the last unit 12 is made into a cylindrical shape, which can not only better resist stretching, but also will not be distorted due to the stretching of the foundation.

[0028] In the reinforced concrete floor slab of the tower unit, there is an expansion concrete strengthening belt perpendicular to the extension direction of this section of the tower unit, which acts as a post-cast strip and applies compressive stress to the floor slab. The expansion concrete strengthening belt is originally used to offset the shrinkage stress of the concrete during the curing process. Here, it is also used to apply prestress. Its setting density and the expansion rate of the concrete are higher than those in general buildings. How to set it specifically should be carried out according to the requirements of force calculation.

[0029] As Figure 3 shown, the prestress in the roof of the first unit 11 is applied by the following structure: The roof of the first unit 11 is a sloping roof 5 that slopes obliquely downward from the first unit 11 towards the upstream direction of the river. The sloping roof 5 is a steel structure roof supported by columns. Among the columns supporting the sloping roof 5, the columns at the bottom of the sloping roof 5 are reinforced concrete (heavier) inclined columns 6, and the tops of the inclined columns 6 are inclined towards the upstream direction of the river.

[0030] Here, it is very difficult to determine the prestress tensile elongation of the roof of the first unit 11 because the deformation of the foundation is a dynamic process. Therefore, conventional means cannot be used to apply prestress. Here, the inclined columns 6 and the sloping roof are used to apply prestress, which can not only achieve dynamic adjustment, but also will not gradually weaken over time (here, the prestress is applied by gravity, and even if the foundation is compressed, it does not affect the prestress. Conventional prestress tension cannot overcome this problem). In the present invention, there is no special prestress structure such as prestress cables, but the form of some building structures is finely adjusted to apply prestress.

[0031] Each tower unit is an extra-long structure. The frame beam is a steel reinforced concrete beam. The frame column 4 meets the following conditions: Condition 1: When any one of the frame columns 4 is removed, the vertical load borne by the removed frame column 4 is transferred to the adjacent other frame columns 4 without causing damage; Condition 2: Remove any one of the frame columns 4, and after adding a horizontal load equal to the self-weight of the removed frame column 4 to the horizontal load borne by the removed frame column 4 and applying it to the adjacent other frame columns 4, no damage will be caused.

[0032] In the present invention, bored piles socketed into rock 3 are completely used to construct the pile foundation, which has potential side effects: in the application scenario of the present invention, the bedrock is relatively brittle and may be locally damaged during an earthquake, so that some of the bored piles socketed into rock 3 are damaged and the frame columns 4 above the bored piles socketed into rock 3 collapse. The following solutions are adopted to overcome this side effect: By setting redundancy for the frame columns 4 (collapse of some does not affect the force bearing), using steel reinforced concrete beams connected as a whole as frame beams (steel reinforced concrete beams have high stiffness and will not break after the collapse of some frame columns 4. Steel beams can also be used in parts with low stiffness requirements, and if a certain frame beam has no risk of fracture, it can also be replaced with a concrete beam), applying pre-compressive stress to the floor slab (to prevent it from being cracked), and using super-long (in architecture, super-long generally means that the distance between adjacent structural joints exceeds 55 meters, which is usually avoided. Here it is used to ensure that each frame column 4 is connected to enough other frame columns 4 through frame beams), even if some frame columns 4 collapse due to local damage of the rock formation, the load will be redistributed to form a new stable force-bearing structure, and the seismic resistance of the building will not be affected by completely constructing the pile foundation with bored piles socketed into rock 3. At the same time, the problem caused by the phase difference of seismic waves at both ends due to the super-long building is that local irregular vibration is likely to cause local collapse, but the structure in the present invention is not afraid of local collapse, so this super-long structure can be used.

[0033] The super-long special-shaped building adopts a raft foundation, and the raft foundations of each tower unit and the podium 2 are connected as a whole. The overturning process of the building is interfered by all the bored piles socketed into rock 3, so that the building is not easily overturned.

[0034] As Figure 4 shown, the bored piles socketed into rock 3 are rotary drilled cast-in-place piles with the lower ends socketed into the bedrock. The pile caps at the tops of the bored piles socketed into rock 3 are connected as a whole through a raft. During the construction process of the bored piles socketed into rock 3, first construct the bored piles socketed into rock 3 of the first unit 11, then construct the bored piles socketed into rock 3 of the last unit 12, and finally construct the remaining bored piles socketed into rock 3. To overcome the influence of the deformation of the foundation during the piling process on the construction.

[0035] The embodiments described above are only used to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An extra-long special-shaped building for soft and narrow river beach land, which is used to adapt to the narrow river beach land with unstable soil layers, and is characterized in that: From the bedrock upwards, it includes backfill soil, rock-socketed piles (3) that penetrate the backfill soil and are inserted into the bedrock, frame columns (4) arranged on the rock-socketed piles (3), frame beams arranged on the frame columns (4), floor slabs arranged on the frame beams, and enclosure structures arranged on the periphery of the building; The tower of the super-long and irregular-shaped building is zigzag-shaped and extends along the river bank, and the podium (2) is filled in the notch of the zigzag; each section of the tower is an integral unit, and a structural joint is arranged between adjacent tower units; The reinforced concrete floor slabs of each section of the tower unit are all provided with prestress parallel to the extension direction of this section of the tower unit and of the type of compressive stress; Among each section of the tower units, they are sorted in sequence from top to bottom along the river flow direction. The frontmost one is denoted as the first unit (11), the rearmost one is denoted as the last unit (12), and the rest are denoted as the middle units (13); the roof of the first unit (11) is provided with prestress parallel to the extension direction of this section of the tower unit and of the type of tensile stress, and a patio is opened in the middle of the last unit (12), and the last unit (12) is expanded outwards around the patio to form a tubular structure.

2. The super-long special-shaped building for soft and narrow river beach land according to claim 1, characterized in that: The reinforced concrete floor slabs of the tower units are provided with expansion concrete strengthening belts perpendicular to the extension direction of this section of the tower unit, which act as post-cast strips and apply compressive stress to the floor slabs.

3. The super-long special-shaped building for soft and narrow river beach land according to claim 1, characterized in that: The prestress in the roof of the first unit (11) is applied by the following structure: The roof of the first unit (11) is a sloping roof (5) that slopes obliquely downwards from the first unit (11) towards the upstream of the river. The sloping roof (5) is a steel structure roof supported by columns. Among the columns supporting the sloping roof (5), the columns at the bottom of the sloping roof (5) are reinforced concrete inclined columns (6), and the tops of the inclined columns (6) are inclined towards the upstream of the river.

4. The super-long special-shaped building for soft and narrow river beach land according to claim 1, characterized in that: Each of the tower units is a super-long structure, the frame beams are steel-concrete composite beams, and the frame columns (4) meet the following conditions: Condition 1: When any one of the frame columns (4) is removed, the vertical load borne by the removed frame column (4) is transferred to adjacent other frame columns (4) without causing damage; Condition 2: When any one of the frame columns (4) is removed, and the horizontal load borne by the removed frame column (4) plus a horizontal load equal to the self-weight of the removed frame column (4) is applied to adjacent other frame columns (4), no damage will be caused.

5. An extra-long special-shaped building for soft and narrow river beaches according to claim 1, characterized in that: The super-long and irregular-shaped building adopts a raft foundation, and the raft foundations of each tower unit and the podium (2) are connected as a whole.

6. The super-long special-shaped building for soft and narrow river beach land according to claim 5, wherein: The rock-socketed piles (3) are rotary drilled cast-in-place piles with the lower ends embedded in the bedrock. The caps at the tops of the rock-socketed piles (3) are connected as a whole through the raft. During the construction process of the rock-socketed piles (3), the rock-socketed piles (3) of the first unit (11) are constructed first, then the rock-socketed piles (3) of the last unit (12) are constructed, and finally the remaining rock-socketed piles (3) are constructed.

7. An extra-long special-shaped building for soft and narrow river beach land according to claim 1, characterized in that: In the foundation pit of the super-long and irregular-shaped building, the original soil layer above the bedrock is completely removed and replaced with backfill soil, and the backfill soil is leveled and compacted lime-soil.

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