TW452616B - Light banking structure - Google Patents

Abstract

This invention aims at improving stability of a light banking structure economically by preventing plastic deformation of foaming plastic block which is a banking material used in this invention. The solution: a high density foaming plastic block 1b is used in one layer containing a hollow lowest bottom part between a front surface wall 3 and the rear surface inclination place 2 so as to cope with the compression caused by the sliding. The plastic block 1b is of higher compression strength than plastic block 1a used in the upper part.

Description

452616 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method of using foamed plastic blocks as filling material soil, and particularly relates to widening lightweight filling material for oblique land or light filling material. Soil structure. '— Lightweight Filling with a Standing Wall [Known Technology] As a widening fill for sloped ground or for filling with self-standing walls, in order to reduce the weight of the filling structure or reduce earth pressure, etc., Use ultra-light-weight foamed plastic blocks β, 疋 in the widened fill at a slant. For example, as shown in Figure 9, fill the foamed plastic block between 102 and the front wall 103: obliquely on the back of the front wall 103 Earth pressure, that is, active earth pressure. See the lowering effect. In addition, for the purpose of load dispersion or foam plastic protection, two floors 105 and 104 are placed on the uppermost part of the foam plastic block. J 丨 Τ blade configuration surface "Another Λ, a concrete panel 105, a technical bed (the tidal layer) 106, a lower road plate (cut gravel layer 7, cut road gravel layer) formed on the top of the filling structure ) 108, the sound of the 109 bon upper road disk π. ± Li 1 09 specially formed the road pavement 1 1 0 ,! The main, the '= traffic load role in transporting paving cracks :: 密 dense block The traffic load s that acts on and the paving body has a large effect s Γ If V is used, it can be more economical: "The thickness can be very thin". Therefore, in the past, it was on the top foamed plastic block 101b. , Mostly using

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The density with high compressive strength V. Description of the invention (2) There are higher types than the foamed plastic block 1013 for the lower layer. A lightweight filling order in the self-standing wall, for example, as shown in circle 10, is filled with a hair dagger as a filling material between the body and the body. The above phases are in the uppermost part of the foamed plastic block and the middle two: The soil panel 105 and m are used on the uppermost foamed plastic block ㈣: and the lower layer is used for the foamed plastic block 1 (Ua has a higher: & kind. V & Problems to be Solved by the Invention] By using the above-mentioned ultra-lightweight foamed plastic block as a filling material, the active earth pressure can be reduced. For example, in the #wide filling slope, the width of the phase can be increased by two times. "In the vertical wall, you can get even higher." When constructing the lightweight fill structure shown in Figures 9 and 10, don't let the pavement as a heavy object form the lightweight fill structure. The following problems may occur in the most serious cases: Sergeant ① In the case of a large-scale widening of the filling structure especially for a slope with a large inclination, it may contain filling materials such as traffic loads and pavements. The body ’s own weight causes a large slip, which will cause the plastic deflection in a part of the foamed plastic block. ② In the case of constructing a particularly high filling structure, the position of the center of gravity of the filling material containing the paving body is shifted during the earthquake, which may cause plastic deviation in a part of the foamed plastic block. Once a large plastic deviation occurs in the foamed plastic block as a filling material

4526 1 S V. Description of the invention (3) When the slope is inclined, the stability of the filling structure will be reduced, and in the worst case, there will be a danger of the filling structure collapse and collapse. In view of the above problems, the present invention aims to provide a new structure that inclinesly widens the fill or light-filled fill of a self-supporting wall, and in particular, stabilizes the fill structure when a pavement or the like as a heavy object is at the top. New structure with high performance. [Means for Solving the Problem] The structure of the present invention achieving the above-mentioned object is as follows. That is, the first solid lightweight filling structure of the present invention is an inclined widening filling structure using a foamed plastic block as a filling material in a space where the front wall and the back surface are inclined. The compressive strength of the foamed plastic block used in at least one layer lower than 0 # is higher than the above. # $ 八 工 万 邛 The foamed plastic used in accordance with the first lightweight filling structure of the present invention, widens the filling slope. In the soil structure, a large sliding force is formed due to the inclination of the back surface and the angle of "Γ". ^ ^ ^ Ρ. Η§. I,, ^ The maximum stress on the lower foamed plastic block is large due to structural problems. The plastic sloping 4 ± Μ 墟 # 拟 + + 畀 畀 P ^ 1 is not a pavement body as a weight: in the case of the top 4, can also be qualitative and reliable lightweight filling structure.卞 /, Stable with filling knife In addition, the second lightweight filling structure of the present invention is used as a tilting material for the filling material in the predicate block: widening, shrinking and strong production is better than the foamed plastic used in the back of the German post. The compression strength of the block is better than its rear. The foamed plastic block used by P is ancient. In addition, the third lightweight filling structure of the present invention:

89120064.ptd Page 6 4526 彳 6 V. Description of the invention (4) The compressive strength of the foamed plastic blocks used behind the wall is higher than that of the foamed plastic blocks used in the wall. σ According to the second or third lightweight fill structure of the present invention, the lightweight fill structure (the second lightweight fill structure of the present invention) or the free-standing lightweight fill structure (the present invention) In the third light-filling structure, the center of gravity of the filling body is shifted due to horizontal forces during an earthquake, which can prevent foamed plastic blocks on the front wall or the back of the wall that exerts the greatest stress. Due to structural problems, large plastic distortion occurs, and particularly when a pavement or the like, which is a heavy object, is formed on the uppermost portion, a lightweight soil filling structure having sufficient stability and reliability can be obtained. [Embodiments of the Invention] The present invention achieves a structurally stable lightweight filling structure by using a foamed plastic block having high compressive strength as a filling material at a suitable place of the filling structure. Detailed description will be given based on specific examples. First, the first lightweight filling structure of the present invention will be described. Fig. 1 is a longitudinal sectional view showing an example of the first lightweight filling structure of the present invention. Figure 1 '1 a is a foamed plastic block with low compressive strength, 1 b is a foamed plastic block with a higher compressive strength than foamed plastic block 1 a, 2 is the back slope, 3 is the front wall' 4 is arranged in the hair The concrete panel '11 in the middle of the foam filling layer is the base concrete. Also, '10' is a road pavement composed of a concrete panel 5, a road bed 6, a lower-layer road plate 7, an upper-layer road plate 8, a surface layer 9, and the like. In this example, the sloped widening of the fill structure, the slope of the slope on the back side 'is the same width (road width), and the scale of the fill structure will have a larger scale. big

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V. Description of the invention (5) Force (referred to as M sliding force in this book). The compressive force of the block has no effect on the compression force. Since the foaming force " Z force acts as a small force on the foamed plastic, it acts on the lower foamed plastic block compared to the lower layer. Here, in the present invention, the first lightweight filling The compaction of the knot should be A force. The space 2 (increasing the filling material in the 3-layer layer with the front wall filled with the filling material by using a higher compression strength to increase the true multi-layer density) can fully resist the space 2 with the back surface; slip: 2: Two compressions prevent large plastic skew on the foamed plastic block below it. The high-pressure smart foamed plastic block lb is high density in most cases. The specific density of the high compressive strength foamed plastic block 113 is preferably greater than 22kg / m3 and better than 24kg / ni3, especially It is best to reach above 2 8 kg / m3. On the other hand, 'low compressive strength foamed plastic blocks 丨 a is low density in most cases'. The low compression strength foamed plastic blocks 丨 aThe specific density is preferably above 15 kg / m3 2 2 kg / m3 or less. For the foamed plastic block used in the present invention, it is preferable to have excellent strength. For example, polystyrene foam, polyethylene foam, polyurethane foam, etc. can be used. Polystyrene foam with excellent strength and water resistance is particularly suitable. . For the foamed plastic block, the pre-foamed block is placed in a metal mold, and an in-mold foam method is formed by heating and cooling to a predetermined density, and a foaming agent is injected into the molten plastic under high pressure to be mixed. It becomes a fluid glue, and it is extruded into the atmosphere. The extrusion foaming method, which is rapidly expanding, has a higher compressive strength than the internal foaming method.

89120064.ptd Page 8 4 526 1 6 V. Description of the invention (6) For this reason, in the present invention, for the foamed plastic block with high compression strength, it is best to use extruded foamed polyethylene, For the foamed plastic block 1 a 'having a lower compressive strength than the foamed block 1 a ′, an in-mold expanded polystyrene is preferably used. For the high compression strength foamed plastic block ib, 'extrusion foamed polystyrene' is specifically 'for example', a product of 々 Chemical Co., Ltd., called light filling block DX-2 9 (allow compression Stress: 1 4 4 manpower / m2, density 2 9 ± 2.0 kg / m3) and DX_35 (permissible compressive stress ton-force, density ± 3.0 kg / m3). In addition, for low-compressive strength foamed plastic blocks 丨 a, in-mold expanded polystyrene is preferred, specifically, for example, a product of Sakai Chemical Co., Ltd. named light filling block D-16 (allowing compression) Stress: 3.5 ton-force, density l + 6 ± 1.0 kg / m3), D-20 (permissible compressive stress: 5 mock force / m2, density: 20 ± h 5 (-1.〇) kg / m3), D-25 (allowable compressive stress: 7 ton-force / m2, density · 25 ± 1. 5 kg / m3), D-30 (allowable compressive stress: 9 ton-force / π) 2 and dense sound 30 ± 2 kg / m3). In addition, a combination of foamed plastic blocks having low compressive strength and high pressure: strength can be appropriately performed according to design conditions, and there is no particular limitation on this. Example ′ In the case of the low-compressive strength foamed plastic block la using the above-mentioned light filling block _16 or D-20, the light-filling block ^ support can be used as a high compression strength foamed plastic block 1] 3. ^ In the standard test method for foamed plastic materials (JIS κ 7 2 2 0_ 1 9 9 5), the shrinkage is determined by the compressive yield stress or the prescribed skewed compressive stress (compressive strength in the thickness direction). The test method uses the 5% skew yield point as the yield skew stress, and 5% skew yields no yield

Page 9 ^ 5 26 ^ 6 V. Description of the invention (7)

The yield point is the compressive stress at 5% skew D. In the case of the above polystyrene foam resin, plastic deformation occurs at 5% skew, and the distortion is also left. In addition, in the region where the repeated load shows an elasto-plastic response, the compression limit is the same when the compression distortion is 1% or less. At this time, the load is about 1/2 of the 5% compressive strength. In this way, the above-mentioned allowable compressive stress is 1/2 of the 5% compressive strength. Therefore, when the foam material is used as the filling material, by designing the compressive stress of each part of the foamed plastic block below the above-mentioned allowable compressive stress, the plastic distortion can be prevented from occurring, and the stability and reliability can be made high. Lightweight filling structure. In the first lightweight filling structure of the present invention, the range of the high-compressive-strength foamed plastic block 1 b is appropriately determined according to the allowable compressive stress of the low-compressive-strength foamed plastic block 丨 a and the magnitude of the sliding force. For example, if the sliding force is 9 ton-force / m2 and the low compression strength of the foamed plastic block 1a is 5 ton-force / m2 (the light filling block 〇2 〇 above), In the layer whose width W (refer to the figure) is less than or equal to 8m, the light filling block DX-29 (allowable compressive stress: 4 ton-force / ro2) is preferably used as the high compression strength foamed plastic block 1 b. In the extrusion foamed polystyrene manufacturing equipment suitable for compressive foamed plastic block lb, it is possible to produce a foamed polystyrene with a foaming property ==: as a raw material: The production cost of the second block is used. In the commercial manufacture of stupid / thin foam, the equipment is specially extruded and foamed: by = see. / 外 ’在-I j 在 庋 Low, 500mm thick extruded poly

452616 V. Description of the invention (8) It is not possible to obtain products installed in the thickness direction in styrene foam, and it is difficult to obtain stable products, which is unrealistic for reasons of manufacturing technology. In reality, if the thickness is more than 100 mm, the uniformity of the product will be extremely poor. Therefore, in the case of extruded polystyrene foam, the thickness of about 100 mm is called the realistic limit. For this reason, 'the high compression strength foamed plastic block 1 b of the present invention when using extruded foamed polystyrene' is best to use a plurality of sheets of extruded foamed polystyrene plate-shaped body laminated with an adhesive to form a block-shaped product. That is, "with the possible output in ordinary equipment, multiple sheets of extruded foamed polyethylene sheet with a thickness that guarantees the uniformity of the product (100 mm in the specific example) are integrated with an adhesive" to form foamed plastic. This way, no special manufacturing equipment is needed in the manufacture of large foamed plastic blocks, which can reduce the manufacturing cost 'at the same time'. The foamed plastic blocks thus formed can also basically maintain the extrusion foamed polystyrene board. With excellent compressive strength and water resistance, it is possible to build a lightweight and filling structure with high stability and reliability. The second lightweight filling structure of the present invention will be described below. Fig. 2 is a longitudinal sectional view showing an example of a second lightweight filling structure according to the present invention 'and the same parts as those shown in Fig. 1 are shown, and i c is a foamed plastic block having a relatively high compressive strength. In the slantly widening of the fill structure, once the pavement body 10, which is a special weight, is formed at the top, a great horizontal force is generated during an earthquake, and the center of gravity of the lightweight fill body will be directed to the front wall side by the horizontal force. Offset, the reaction forces on the two sides of the front two walls increased. This increased site reaction force acts as a large compressive force on the foamed plastic blocks directly behind the front wall back.

89120064.ptd 4526 1 6 V. Description of the invention (9) Here, 'in the second lightweight filling structure of the present invention, on the part directly behind the back of the front wall', the compression strength is higher (in most The occasion has a higher density) of foamed plastic environment lc, which can fully resist compression caused by the reaction force of the site during an earthquake. This prevents a large plastic skew on the foamed plastic block in this part. In addition, for the high-compressive-strength foamed plastic block 1 C, the same product as the above-mentioned high-compressive-strength foamed plastic block 1 b may be used. In the second lightweight filling structure of the present invention, the range of the foamed plastic block lc with high compressive strength is appropriately determined according to the allowable compressive stress of the foamed plastic block 13 with low compressive strength and the magnitude of the above-mentioned reaction force on the site. design. Specifically, for example, in a case where the low-density foamed plastic block 1 a adopts an allowable compressive stress of 5 mil / m2 (the above-mentioned light filling block D-20), the reaction force of the site on the front wall side during an earthquake exceeds 5 Ton-force / m2 (but below 1 & mock-force / m2) 'It is best to use the above light filling block DX_29 (allowable compressive stress: 14 ton-force / m2) as a high compression strength foamed plastic block 1 c To use. > The first and second lightweight filling structures of the present invention can be combined with each other. Fig. 3 is a longitudinal cross-sectional view showing an example of the lightweight soil filling structure. The same symbols as Figs. 1 and 2 indicate the same components. As shown in Figure 3, the bottom of the filling material filling layer and the back of the front wall are square, and the use of foamed plastic blocks with high compressive strength, ib and '', respectively, is sufficient to prevent the site from being affected by the above sliding and earthquakes. Force and produce a large plastic skew on the knife. In this case, it is best to use the same material for the foamed t " block 1b and the foamed plastic block 1c, and it is also possible to use different materials for the compressive stress of each adjacent component.

452616 发明, description of the invention (ίο) '' The third lightweight filling structure of the present invention will be described below. Fig. 4 is a longitudinal sectional view showing an example of a third lightweight filling structure of the present invention: and, the same symbols as in Fig. 1 represent the same components, and Id is a foamed plastic having the same strength as that of the car body. Blocks, i & and 2b are facing walls. The third lightweight filling structure of the present invention is a technique for applying the technical idea of the second lightweight filling structure of the present invention to widening the filling structure obliquely to a lightweight filling structure of a free standing wall. In the self-supporting lightweight soil filling structure shown in FIG. 4, a large-scale concrete pavement 10 is formed on the uppermost part as a heavy object, and a large horizontal force is generated during an earthquake. And the center of gravity of the lightweight fill body is shifted toward the two wall bodies 12a, 12b, so that the reaction force of the site on the Chuanxiong side of the two wall bodies 12a is increased. The increased site reaction force exerted a large compressive force on the foamed plastic blocks directly behind the two wall bodies 2a, 2b. Here, 'in the third lightweight filling structure of the present invention, on the part directly behind the back surfaces of the two wall bodies 12a, 12b', by using a higher compression strength (higher density in most cases) The foam block 1 d can effectively resist compression caused by the reaction force of the site during the above-mentioned earthquake, thereby preventing large plasticity to oblique on the foamed block. In addition, for the high compression strength foamed plastic block 1 d, the same material as that of the foamed plastic block 1 b described above may be used. In addition, the design method of the 1 d range of the high-compressive-strength foamed plastic block using the third light-filling structure of the present invention is also the same as the second light-filling structure of the present invention. In the lightweight filling structure of the present invention described above, as shown in Figs. 5-8

89120064.ptd Page 13 452616 V. Description of the invention (10 ~ shown, you can use a high compression strength foamed plastic block le on the top layer of the lightweight filling material. In this way, the thickness of the above-mentioned pavement can be made. It is thin to realize the lightweight of the filling structure, and it is also possible to design a more economical road. In addition, the high compression strength foamed plastic block le can also be the same as the foamed plastic block 1 b described above. There are various forms of the upper and lower laminated states of the foamed plastic block in the lightweight filling structure of the invention. 'Simply describe it as shown in Fig. 11a to Fig. 1C. Fig. 1a shows the same as Fig. 1 Two types of foamed plastic blocks with different compressive strength are laminated on the upper layer and the lower layer. The lower layer is laminated with a high compression strength foamed plastic block 1 b, and the upper layer is laminated with a low compression strength foamed plastic block 1 a. In this case, in the lightweight filling structure of the present invention, the foamed plastic block 1 b with high compressive strength is preferably used at a height of less than / 2 of the height of the laminated structure. If the foamed plastic with high compressive strength is used, Block 1 b exceeds 1 / of the height of the laminated structure 2, it is very unfavorable to the design of the cost. Figure lib shows the two compressive strengths with the same compressive strength as in Figure 5 are laminated on the upper, middle and lower layers, with a lower compressive strength in the lower layer. The foamed plastic block 1 b 'is laminated with a low compression strength foamed plastic block la in the middle layer and a high compression strength foamed plastic block le in the upper layer. Fig. 11c shows the three different types of foamed plastic blocks. The upper layer, middle layer, and lower layer are laminated, with a low compression strength foamed plastic block lb 'in the lower layer, a low compression strength foamed plastic block la in the middle layer, and a high compression strength foamed plastic block 1 e in the upper layer. 'Laminate. In such a lightweight filling structure of the present invention, it is not limited to the case where a foamed plastic block having the highest compressive strength is used for the lowermost layer.

89120064.ptd Page 14 4 5 2 6 16 V. Description of the invention (12) Furthermore, "the lightweight filling structure of the present invention is not limited to the above-mentioned embodiment", for example, when the filling steel structure is tilted to widen the filling structure, the base steel is used. In order to improve the integrity of the pile foundation inclined with the foamed plastic filling layer at the back, an anchor rod is embedded in the concrete panels 4 and 5, and one end of the anchor rod can be fixed to a concrete steel pile constituting the front wall 3, etc. On the other hand, the other end is erected by an anchor buried deep in the back side 2. Also, in the filling structure of the free standing wall, anchor bolts are also embedded in the concrete panels 4 and 5, and both ends of the anchor bolt can be erected and fixed to concrete steel piles and the like constituting the walls 12a and 12b. [Effects of the Invention] As described above, the present invention has the following effects. (1) Inclined widening of the fill 'When a foaming plastic block with high compressive strength is used in at least one layer at the bottom of the space containing the front wall and the back inclined, a large sliding force acts in the oblique direction of the back. It can prevent the occurrence of plastic distortion of the structure in the foamed plastic block, so that a lightweight filling structure with sufficient stability and reliability can be realized more economically. (2) In the widening of the fill obliquely, by using a foamed plastic block having a relatively high compressive strength directly behind the back of the front wall, the position of the center of gravity of the fill is shifted due to horizontal forces during an earthquake, thereby leading to the front When a large site reaction force acts on one side of the wall, it can also prevent large plastic skews that cause structural problems in foamed plastic blocks, and can achieve lighter filling with sufficient stability and reliability more economically. Soil structure. (3) In the filling of self-supporting walls, by using a foamed plastic block with relatively high compressive strength directly behind the back of the wall, the horizontal force due to the earthquake

S9120064.ptd Page 15 452 6 1 6 V. Description of the invention (13) In the case where the center of gravity of the fill body is shifted so that a disc rtTT-reaction force acts on one side of the two walls > Large plastic skews that cause problems in foamed plastic blocks 5 A lightweight filling structure with constant f and reliability can be realized more economically 0 [Explanation of component number] la Foamed plastic blocks with low compressive strength lb, 1 c , Id, 1e, 1e > Foam plastic lb with compressive strength, Foam plastic block with medium compressive strength 10] a Foam plastic block with low compressive strength 101b Foam plastic block with compressive strength 2 , 102 oblique back 3, 103 front wall 4, 104 intermediate concrete panel 5, 105 top concrete panel 6, 106 road bed, 107 lower road tray 8, 108 Upper layer 9, 109 Surface layer 10, 110 Pavement 11 Basic concrete 12a, 12b 112a 112b Wall body

89120064.ptd Page 16 45 26 1 6 Brief Description of Drawings Fig. 1 is a longitudinal sectional view showing an example of the slantly widened filling structure of the present invention. Fig. 2 is a longitudinal sectional view showing another example of the slantly widened filling structure of the present invention. Fig. 3 is a longitudinal sectional view showing still another example of the slantly widened filling structure of the present invention. Fig. 4 is a longitudinal sectional view showing an example of a self-supporting wall filling structure of the present invention. Fig. 5 is a longitudinal sectional view showing another example of the slantly widened filling structure of the present invention. Fig. 6 is a longitudinal sectional view showing another example of the slantly widened filling structure of the present invention. Fig. 7 is a longitudinal sectional view showing another example of the slantly widened filling structure of the present invention. Fig. 8 is a longitudinal sectional view showing another example of a self-supporting soil filling structure of the present invention. Fig. 9 is a longitudinal sectional view showing a conventional slantly widened filling structure. FIG. 10 is a longitudinal sectional view showing a conventional self-supporting wall filling structure. Figures Ua to 11c are summary diagrams of the top and bottom lamination patterns of foamed plastic blocks in the lightweight fill structure of the present invention.

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Claims (1)

452616 VI. Scope of patent application 1. A lightweight filling structure 'It is an inclined widening filling structure using a foamed plastic block as a filling material in a space where the front wall and the back are inclined, and is characterized by: The compressive strength of the foamed plastic blocks used in at least the bottommost layer is made higher than the foamed plastic blocks used in the upper part thereof. 2. —A kind of lightweight filling structure 'It is a sloped widening filling structure using foamed plastic blocks as filling material in the space between the front wall and the back slope, which is characterized by: ° The back of the front wall is behind the back The compressive strength of the foamed plastic block used is higher than that of the foamed plastic block used at the rear part. 3. —A kind of lightweight filling structure, which is a self-supporting wall filling structure using foamed plastic blocks as filling materials in the space between the walls, which is characterized by foaming the back of the wall The compressive strength of the plastic block is higher than the foamed plastic block used in the middle. 4. The lightweight filling structure according to any one of the items 1 to 3 of the scope of patent application, wherein the above-mentioned high-strength foamed plastic glazed block is made of extruded polystyrene, and the compression strength ratio is Its low foamed plastic block is made of in-type foamed polystyrene. 5. For example, the lightweight filling structure of item 4 of the patent application scope, in which the above-mentioned foamed plastic block with high compressive strength is extruded into multiple pieces. The foamed polyethylene sheet is formed by laminating it with an adhesive. 6. For the lightweight soil filling structure according to any one of claims 1 to 3, wherein the density of the foamed plastic block with high compression strength is greater than 22kg / \\ 312 \ 2d-code \ 89-12 \ 89120064.ptd Page 18 45 26 1 6 VI. Application for patent scope 7. For example, the lightweight filling structure of the scope of patent application No. 4 'where the above compressive strength is high The density of foam blocks is greater than 22kg / in3. 8. As for the lightweight soil filling structure in the scope of the patent application, the density of the above-mentioned foamed plastic block with high compression strength is greater than 22kg / m3. 9. For a lightweight fill structure according to any one of claims 1 to 3, wherein the uppermost layer of the above space is also made of foamed plastic blocks with high compressive strength. The foamed plastic blocks with high compressive strength are made of A multi-piece extruded expanded polystyrene plate-like body is formed by laminating with an adhesive. 1 〇. As for the lightweight filling structure in the fourth item of the patent application scope, the uppermost layer of the above space also uses foamed plastic blocks with high compressive strength. The foamed plastic blocks with high compressive strength are made by extruding multiple pieces. The expanded polystyrene plate is formed by laminating it with an adhesive. 1 1. If the lightweight filling structure of item 5 of the patent application scope, wherein the uppermost layer of the above space is also made of foamed plastic blocks with high compressive strength, the foamed plastic blocks with high compressive strength are extruded from multiple pieces. The expanded polystyrene plate is formed by laminating it with an adhesive. 1 2. According to the lightweight filling structure of the sixth scope of the patent application, the uppermost layer of the above space also uses foamed plastic blocks with high compressive strength, and the foamed plastic blocks with high compressive strength are made by extruding multiple pieces. The expanded polystyrene plate is formed by laminating it with an adhesive. 1 3. If the lightweight filling structure of item 7 in the scope of the patent application, wherein the uppermost layer of the above space is also made of foamed plastic blocks with high compressive strength, the foamed plastic blocks with high compressive strength are made of> 1 The extruded expanded polystyrene plate is formed by laminating it with an adhesive. U312 \ 2d-code \ 89-12 \ 89120064, ptd Page 19 4 5 26 1 6 \\ 312 \ 2d-code \ 89-12 \ 89120064.ptd Page 20