201114981 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種於地中具有樹脂製積層構造物而成 之地中構造物。 【先前技術】 已知有一種具備有如下構成之地中構造物，該構成係 將多個於内部具有空間的樹脂製構造構件多層堆疊而形成 之於内部具有空隙部的樹脂製積層構造物以沿著道路的方 式埋設於道路下的構成。具體而言，可列舉使用了前述樹 脂製積層構造物做為於道路下所施工的雨水流出抑制設施 中的雨水儲留浸透槽之地中構造物，或者是，使用了前述 樹脂製積層構造物做為具備有輕量堆土構造的道路中的輕 量堆土構造之地中構造物等。 例如於專利文獻1，係記載了一種地中構造物：於道 路下埋設於前述内部具有空隙部的樹脂製積層構造物做為 雨水儲留部，並使其能將積在道路上的雨水暫時地儲存於 此。於專利文獻2，係記載了 一種地中構造物：使用具有 空隙部的樹脂製積層構造物（輕量堆土用合成樹脂發泡塊 體）作為具備有輕量堆土構造的道路中的輕量堆土層。於專 利文獻3，係記載了一種構造物：將具有空隙部的樹脂製 積層構造物埋設於地中而做為儲水槽或儲留槽，並在其上 方將樹脂發泡體的塊體積層而形成輕量堆土層，以使其能 4 322266 201114981 於該輕量堆土層上設置道路。 然後，於前文所述的專利文獻1及專利文獻3、或者 是專利文獻4，係記載了一種樹脂製構造構件：用於形成 具有空隙部的樹脂製積層構造物之於内部具有空間的具體 例子。 (先前技術文獻） (專利文獻） 專利文獻1 :日本特開2000-160666號公報 專利文獻2:日本特開平8-144285號公報 專利文獻3:日本特開2006-266034號公報 專利文獻4:日本特開2009-24447號公報 【發明内容】 (發明欲解決之課題） 於上述形態之地中構造物中，將於内部具有空隙的樹 脂製積層構造物於道路下以沿著道路的方式配置，並於其 上方藉由回填為沙土或採石的回填土的構造的情形，當覆 土（回填土）較薄時，荷重的分散較小、通行道路上的車輛 所帶來的輪荷重係經由回填土，以集中荷重的形態作用於 於樹脂製積層構造物，依據條件，會發生於樹脂製積層構 造物產生損壞的狀況。為了避免這樣的狀況，雖有加厚覆 土（回填土）的必要，然這必需將樹脂製積層構造物設置的 更深，施工位置受到限定。 5 322266 201114981 為了避免這種狀況’如於前述專利文獻2所記載，進 行於樹脂製積層構造物的最上部配置如與其橫向寬度相同 橫向寬度的混凝土（concrete)地板的荷重分散材料。此 外，如於專利文獻3所記載，於樹脂製積層構造物上積層 樹脂發泡體的塊體而形成輕量堆土層，藉此媒求減低作用 於樹脂製積層構造物的上載荷重，並進行荷重的分散。 在另一方面，於地中配置有由樹脂製構造構件所構成 的樹脂製積層構造物時，該樹脂製積層構造物及其周圍的 土的扭曲率不相同，故樹脂製積層構造物的端部與回填土 或於現在地基的交界線之地層表面，會產生高低差或裂 紋。即使是於樹脂製積層構造物的最上部配置有與該樹脂 製積層構造物相同的橫向寬度的混凝土地板的構造，也會 發生同樣的狀況。當於地層表面產生了這樣的高低差或裂 紋時，在行走路面上的行人及車輛的通行會產生不便，故 被要求應避免之。 本發明係有鑑於上述的緣由所開發者，本發明欲解決 之課題’係揭露一種具備有如下構成之地中構造物，該構 成係將内部具有空隙部的樹脂製材料積層而製作的樹脂製 積層構造物在道路下沿著道路所埋設的構成，藉由該地中 構造物可在避免因為上載荷重致使構成樹脂製積層構造物 的樹脂製構造構件遭受破損的同時，亦可避免於埋辑有地 中構造物的處所的地層表面產生高低差或裂故。 6 322266 201114981 (解決課題的手段） 本發明之地中構造物，係將具備有如下構成之地中構 造物’該構成係將多個於内部具有空間的樹脂製構造構件 多層堆疊而形成的樹脂製積層構造物沿著道路埋設於道路 下而成，其特徵在於：於前述樹脂製積層構造物的上面配 置有具有較該樹脂製積層構造物的橫向寬度更寬之橫向寬 度的荷重分散材料，而該荷重分散材料的上方區域係利用 屬於沙土或採石的回填土進行回填。 於上述地中構造物中，配置於埋設於道路下的樹脂製 積層構造物的上面的橫向寬度較寬的荷重分散材料，其延 伸出於樹脂製積層構造物的側方側的部分，係於回填土戍 現在地基中以橫向方向深入。為此，因在地中的樹^制積 層構造物及其周圍的土地的扭曲率不同而恐有在樹浐制積 層構造物的端部及回填土或現在地基的交界線發生土地移 動之虞，而該土地的移動可藉由荷重分散材料的前述現在 地基中以橫向方向深入的部分來控制住。是故， — % ’威確貫地 阻止於前述交界線的地層表面產生高低差或裂紋。 此外’前述難分散材㈣橫向寬度，额埋設於道 路下的樹脂製積層構造物的橫向寬产為办 g 、 句見。^故，由通行 道路上的車輛之輪荷重等所致、透過回 昇工展作用於荷重 分散材料的集中荷重，係與荷重分散材料_向 脂製積層構造物的橫向寬度相同的情形時比_為見又、i 322266 7 201114981 圍地分散。是故，於本發明之地中構造物，係可確實地避 免樹脂製積層構造物因上載荷重而遭受破損。 將前述荷重分散材料的橫向寬度，設為較埋設於道路 下的樹脂製積層構造物的橫向寬度寬到何種程度，係考慮 所埋設的樹脂製積層構造物周圍的土壤的物理性質及作用 於樹脂製積層構造物時所預測的上載荷重的大小等而設 定，然一般來說，若於樹脂製積層構造物的兩侧方向以分 別延伸出0.5m至2m左右的方式，則可達到預期的目的。 於本發明中，以前述荷重分散材料而言係可例示混凝 土地板、預鑄混凝土板、地工織物、擴張金屬板、格柵或 鐵板等。可將這些材料單獨使用，亦可做為任兩個以上的 組合體使用。在以防止因上載荷重所致的樹脂製積層構造 物的破損為主要的目的時，荷重分散材料的材料，係較佳 為混凝土地板、預鑄混凝土板及鐵板等。在以阻止於地層 表面發生高低差或裂紋為主要目的時，係更佳為地工織 物、擴張金屬板、格柵及鐵板等，或者是這些材料的組合 體。然而，並不限於此。 此外，以荷重分散材料而言，在使用地工織物等薄片 狀或薄板狀者時，為了增加該等與樹脂製積層構造物之間 的摩擦量，較佳於兩者間設置碎石層。藉此，可確實地抑 制較薄的荷重分散材料因為周圍的土壤的移動造成在樹脂 製積層構造物上的移動，而可更確實在地層表面的高低差 8 322266 201114981 的抑制效果。 再者’地工織物係在土木等的用途中被廣泛使用的材 料’並亦包含了地工格網（geogrid)。以地工格網的一個例 子而言，係可列舉將聚脂（po 1 yester)纖維及醯胺（arami d) 纖維予以交織的格子狀的織物透過樹脂塗敷（coating)而 知的纖維格子（fiber grid)系的地工織物 (geotextiles)。抗拉強度係 5〇kN/m 至 200kN/m 左右、重 量為50g/m2至丨〇〇〇g/m2、拉伸應變為1〇%以下、並具有雖 然貝輕但強韌且高張力的特性。網孔尺寸係例如l〇mm至 者17可。另外’亦可列舉將聚乙婦網（polyethylene y e t)類型的縱線（s t r a n d)透過醯胺纖維補強而得的聚合格 = ^Giymer grid)系地工格網。再者，於地工織物中，係 、、布（ge〇 woven)、不織布（ge〇n〇_w〇ven)及編織物 ^e〇 knit) 〇 者，之地中構造物’只要是於道路下沿著道路埋設 層構造物弋任忍的地中構造⑯。舉例而言，前述樹脂製積 之地中彳^具備錄量堆土構造的道財的輕量堆土層 道路下’或者’前述樹脂製積層構造物構成設置於 造物。、出抑制設施中的雨水储留浸透槽之地中構 寬度方I”—種情形’前述輕量堆土層係於道路的道路 明應解^任位置/σ著道路埋設於地巾，财鑑於本發 之課題’本發明係於前述輕量堆土層在埋設於道 322266 9 201114981 路的車道區域的地下的態樣中，特別有效地發揮其效果。 在此時，前述荷重分散材料較佳係突出直到該道路的步道 部分或侧溝部分之下。 再者，於本發明之地中構造物中，在前述樹脂製積層 構造物為設置於道路下的雨水流出抑制設施中的雨水儲留 浸透槽的情形，以雨水從沿著道路形成的側溝流入前述雨 水儲留浸透槽之方式而構成，在實用上係特別有效的態樣。 依據本發明，可提供一種具備有如下構成之地中構造 物，該構成係將多個於内部具有空間的樹脂構造構件多層 堆疊而形成的樹脂製積層構造物於道路下沿著道路埋設而 成，藉由該地中構造物則在可阻止於對應於樹脂製積層構 造物的端部的地層表面產生高低差或裂紋的同時，可阻止 樹脂製積層構造物因為上載荷重而遭受破壞。 【實施方式】 以下，一邊參照圖式，一邊依據實施形態說明本發明。 (第一實施型態） 第1圖係顯示本發明之地中構造物為設置於道路下的 雨水流出抑制設施時的一態樣。於第1圖中，元件符號1 係顯示道路中的車道，元件符號2係顯示步道。於車道1 及步道2之間，係沿著道路設有側溝3。於車道1之下， 以沿著道路的方式橫跨預設距離埋設有雨水儲留浸透槽 10，而於前述雨水儲留浸透槽10，係按某個間隔設置有管 10 322266 201114981 理容納格11。於前述管理容納格11，有流入前述側溝3的 雨水透過未圖示之集水容納格而流入，而所流入的水係從 管理容納格11進入前述雨水儲留浸透槽10，並暫時地儲 留於此處。然後，儲留於雨水儲留浸透槽10的雨水係隨著 時間浸透至周圍的地基。再者，元件符號12係封閉管理容 納格11之入口的蓋件。 前述雨水儲留浸透槽10係如第4圖顯示一例，將藉由 交互地多層堆疊多個於内部具有空間的樹脂製構造構件31 所形成的樹脂製積層構造物30沿著路線排列達必要的個 數所構成。然後，於雨水儲留浸透槽10的上面係配置具有 較該雨水儲留浸透槽10的橫向寬度更寬的橫向寬度之複 數片混凝土地板13做為荷重分散構件。混凝土地板13係 雖可於道路的全長方向設置一片做為一體化物件，然如第 1圖（a)所示在道路的全長方向排列複數片而設置係以現場 施工為宜。 再者，本形態的樹脂製構造構件31係為習知，並記載 於前述的專利文獻3(日本特開2006-2660345號公報）、專 利文獻4(日本特開2009-024447號公報）等。於第4圖所 示之於内部具有空間的樹脂製構造構件31，係記載於專利 文獻4者，複數個下端為開放之於内部置有空間的箱狀部 32a —邊空出有間隔一邊於X方向排列的箱體行列32，基 本上具備有一邊在正交於X方向的Y方向空出有間隔一邊 11 322266 201114981 排列有達必要行數的構成。如第4圖所示將複數個樹脂 製構造構件31於箱體行列32的方向交互地以直角交又的 爹態下以立料態堆疊’ H此成為前述的職製積層構造 物3〇。在必要時，可集中不同大小的複數個樹脂製構造構 件3丨構成樹脂製積層構造物30的一部份。 施工時，係沿著步道2將車道1的一部份挖掘達必要 的瓞離。在所挖掘的溝槽的底部鋪滿基礎碎石4,在基礎 碎多4上使用前述的樹脂製構造構件31以預定長度構築樹 脂製積層構造物3〇。再者，將基礎碎石4及在其之上的樹 膳製積層構造物30的整體透過如不織布的透水性薄片5包 園择此外’於所需處所構築前述管理容納格11，並將在 徊濟3形成的集水容納格與管理容納格^透過樹脂製的管 子（未圖示）連接。 —字樹知製積層構造物30的周圍透過所挖掘的土 孃负真树知製積層構造物3〇的上面水平面。於樹脂製積 盾媾这物30的上面，將較其橫向寬度更寬的橫向寬度，例 妒橫跨於樹脂製積層構造物30的侧邊延伸〇. 5m至2m左右 的横向寬度的混凝土地板13施工及於其全長。如第丨圖（13) 戶斤糸較佳係以’昆凝土地板13延伸出至前述側溝3之下的 方式施工混凝土地板13。混凝土地板13雖亦可如第丄圖 (b)戶斤不於道路的寬度方向設置一片做為一體化物件，然而 在潙凝土地板13的寬度方向排列複數片而設置係以現場 322266 12 201114981 施工為宜。將現場施工混凝土地板13 ’替換成預鑄混凝土 (precast concrete)板或鐵板搬入至施工現場，並將其設 置於樹脂製積層構造物30的上面的方式亦可。由於使用預 鑄混凝土板或鐵板替換混凝土地板13係可縮短現場施工 期間故為較佳方式。 接著’在經配製的混凝土地板13之上回填屬於所挖掘 的沙土或採石的回填土，在其上方施予供側溝3及車道1 用的舖設工程。 在上述之地中構造物中，由於於車道及步道所蓄積的 雨水係從側溝3透過管理容納格11流入至雨水儲留浸透槽 故可阻止因一時的大雨以致道路成為淹水狀態。再者， 管理容納格Π係亦可用於打開蓋件12,從此處讓人進入 :'、養嘗理雨水儲留浸透槽10及管理容納袼11本身。 白、^外，在配置於埋設在車道1下的雨水儲留浸透槽 之橫向寬度較寬的混凝土地板13中朝雨水儲㈣ :的側方侧延伸出的部分，係如第1圖⑹所示，為 製積者是於現在地基中朝橫向方向進人，故由樹脂 土壤糊1㈣周圍的 部與回埴i 、'水儲留浸透槽10的端 Q真土或現在地基的交界線 朝橫向方向、λ 土壤的移動，係可藉由 J万向進入的部分而擠入混 在地基中。μ 熒土地板13的前述之現 中稭此，可確實地阻止於 、别述交界線的地層表面 322266 13 201114981 部分（於第1圖（b)中做為A顯示的部分）產生高低差或裂 紋。 再者，由於前述混凝土地板13的橫向寬度，係較埋設 於車道1之下的雨水儲留浸透槽10的橫向寬度還寬，故透 過回填的土壤作用於混凝土地板13之通行車道1上的車輛 的輪荷重等所施加的集中荷重，與混凝土地板13的橫向寬 度與雨水儲留浸透槽10的橫向寬度一樣的情況比較，係可 分散於更廣的範圍。為此，於上述之地中構造物，係可進 一步的避免被埋設之構成雨水儲留浸透槽10的樹脂製積 層構造物30因前述上載荷重而破損。 因為上述的理由，於本發明之地中構造物，即使於車 道1下施工有雨水儲留浸透槽10時，也可利用荷重分散材 料（混凝土地板13)上的覆土，亦即回填土的厚度為60cm 左右的薄的覆土，來充分地避免於地層表面部分產生高低 差或裂紋、以及破壞構成雨水儲留浸透槽10的樹脂製積層 構造物30的情形。 (第二實施形態） 第2圖係顯示本發明之地中構造物為設置於道路下的 雨水流出抑制設施時的不同的實施形態，相當於第1圖（b) 的圖。於第2圖所示之地中構造物，係在以達成做為荷重 分散材料的機能的材料而言，使用屬於薄片狀的荷重分散 材料的地工織物14代替混凝土地板13的這點上，與於第 14 322266 201114981 1圖所示者相異。其他的構成為相同，並附上相同的元件 符號而省略說明。此外，屬於荷重分散材料的地工織物14 所達成的作用效果亦與混凝土地板13相同，而亦省略其說 明。 再者，地工織物14係如前文所述，為廣泛的被運用於 土木等用途的材料，舉一例子，可例示透過樹脂塗佈使聚 脂纖維及醯胺纖維予以交織的格子狀的織品而成的纖維格 子系地工織物等。對做為薄片狀的荷重分散材料而言，係 亦可例示擴張金屬板（expanded metal)、格柵（grating) 等。 在將地工織物14等薄片狀或者薄板狀者做為荷重分 散材料使用時，為了使這些材料與構成雨水儲留浸透槽10 的樹脂製積層構造物30之間的摩擦量增大，而於其間設置 碎石層6。藉此，可確實地抑制在較薄的荷重分散材料（地 工織物14)因為周圍的土壤的移動而在雨水儲留浸透槽10 上的不小心的移動，而可進一步確實地阻止在地層表面產 生高低差或裂紋。 (第三實施形態） 第3圖係從道路的橫切方向觀視並顯示本發明之地中 構造物為具備有輕量堆土構造的道路中之輕量堆土層時的 一態樣。於第3圖中，元件符號1係行駛於鬆軟地基20之 上的車道，而於車道1的兩側設立有步道2，再於車道1 15 322266 201114981 及步道2之間設立有側溝3。 由於於車道1之下地基20較為鬆軟，故為了減低加諸 於地基的荷重，將顯示於前文所述的第4圖的形狀、藉由 將多數個於内部具有空間的樹脂構造構件31交互地多層 堆疊所形成的樹脂製積層構造物30,當作輕量堆土層21 埋設於地中。於本例中，輕量堆土層21係橫跨車道1的路 寬的大約全部區域而埋設，然在鬆軟的地基僅存在於車道 1的寬度方向的一部份時，也有僅在此區域埋設輕量堆土 層21的情形。 然後，此處亦在由樹脂製積層構造物30形成的輕量堆 土層21的上面，配置有具有較該輕量堆土層21的橫向寬 度更寬的橫向寬度之混凝土地板13做為荷重分散材料。然 後，於混凝土地板13之上，係藉由屬於在施工時所挖掘的 沙土及採石的回填土而形成回填層，在回填層上，施工供 側溝3及車道1用的鋪設工程。 * 於第3圖所示之地中構造物的情形中，亦在由埋設於 車道1下的樹脂製積層構造物30所形成的輕量堆土層21 的上面，配置有橫向寬度比輕量堆土層之橫向寬度更寬的 混凝土地板13作為荷重分散材料，故與於第1圖所示之地 中構造物相同，可確實地阻止輕量堆土層21與其周圍的土 壤的交界線之地層表面部分（在第3圖以A顯示的部分）產 生高低差或裂紋，此外，可進一步的避免被埋設之構成輕 16 322266 201114981 里堆土層21的樹脂製積層構造物30因為上載荷重而破損 不另說明。 此外，雖未圖示，然即使在第3圖所示的地中構造物 之情形，能使用預鑄混凝土板或鐵板，再者如地工織物的 薄片狀材料替代混凝土地板13做為荷重分散材料之點亦 為理所當然。 【圖式簡單說明】 第1圖（a)係從道路的路線方向觀視本發明之地中構 造物為設置於道路下的雨水流出抑制設施時的—態樣而顯 示之概略圖’第1圖⑻係通過第丨圖⑷的b—b線之剖面 圖。 第2圖係從道路的横切方向觀視本發明之地中構造物 為設置於道訂的雨水Μ抑制設施時的其他紐而顯示 之剖面圖。 、第3圖係從道路的橫切方向觀視本發明之地中構造物 為具備有輕量堆土構造的道路中之輕量堆土層時的—態樣 而顯示之剖面圖。 第4圖係用以說明本發明之地中構造物所使用之於内 部具有空間的樹脂製構造構件之圖。 、 【主要元件符號說明】 1 車道 側溝 2 步道 基礎碎石 322266 4 17 3 201114981 5 透水性薄片 6 碎石層 10 雨水儲留浸透槽 11 管理容納格 12 蓋件 13 混凝土地板（荷重分散材料） 14 地工織物（荷重分散材料） 20 鬆軟地基 21 輕量堆土層 30 樹脂製積層構造物 31 樹脂構造構件 32a 箱狀部 32 箱體行列[Technical Field] The present invention relates to a structure in which a resin laminated structure is formed in the ground. [Prior Art] There is known a structure in which a plurality of resin structural members having a space inside are stacked in a plurality of layers, and a resin laminated structure having a void portion therein is formed. The structure that is buried under the road along the road. Specifically, the structure in which the resin laminated structure is used as the rainwater storage infiltration tank in the rainwater outflow suppression facility installed under the road, or the resin laminated structure is used. It is a structure in the ground of a lightweight pile structure in a road having a lightweight pile structure. For example, Patent Document 1 describes a structure in which a resin laminated structure having a void portion embedded in the inside of a road is used as a rainwater storage portion, and the rainwater accumulated on the road can be temporarily suspended. Stored here. Patent Document 2 describes a structure in which a resin laminated structure (a synthetic resin foamed block for lightweight soils) having a void portion is used as a light in a road having a lightweight pile structure. Quantitative soil layer. Patent Document 3 describes a structure in which a resin laminated structure having a void portion is buried in a ground as a water storage tank or a storage tank, and a bulk layer of a resin foam is placed thereon. A lightweight pile layer is formed to enable it to set up roads on the lightweight soil layer 4 322266 201114981. In the above-mentioned Patent Document 1, Patent Document 3, or Patent Document 4, a resin structural member is described as a specific example in which a resin laminated structure having a void portion has a space inside. . (Prior Art Document) (Patent Document 1) Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. In the structure of the above-described aspect, the resin laminated structure having a void inside is disposed along the road under the road. And by backfilling the structure of backfill for sand or quarry above, when the overburden (backfill) is thinner, the load is less dispersed, and the wheel load caused by the vehicles on the road passes through the backfill. In the form of a concentrated load, it acts on the resin laminated structure, and depending on the conditions, the resin laminated structure may be damaged. In order to avoid such a situation, it is necessary to thicken the soil (backfill soil), and it is necessary to provide a resin laminated structure deeper and the construction position is limited. In order to avoid such a situation, as described in the above-mentioned Patent Document 2, a load-dispersing material of a concrete floor having a lateral width equal to the lateral width of the resin laminated structure is disposed. Further, as described in Patent Document 3, a block of a resin foam is laminated on a resin laminated structure to form a lightweight soil layer, whereby the upper load weight acting on the resin laminated structure is reduced. Disperse the load. On the other hand, when a resin laminated structure composed of a resin structural member is disposed in the ground, the twisted ratio of the resin laminated structure and the surrounding soil is different, so the end of the resin laminated structure is The surface of the stratum with the backfill or the boundary of the current foundation will produce a height difference or crack. The same situation occurs even when the concrete floor structure having the same lateral width as the resin laminated structure is disposed on the uppermost portion of the resin laminated structure. When such a height difference or crack occurs on the surface of the formation, the passage of pedestrians and vehicles on the road surface is inconvenient, and it is required to be avoided. The present invention has been made in view of the above-mentioned problems, and a structure to be solved by the present invention is disclosed in which a structural material having a structure in which a resin material having a void portion is laminated is prepared. In the structure in which the laminated structure is embedded along the road under the road, the structure in the ground can prevent the resin structural member constituting the resin laminated structure from being damaged due to the upper load, and can be prevented from being buried. The surface of the formation with the structure of the ground has a height difference or crack. 6 322266 201114981 (Means for Solving the Problem) The structure of the present invention includes a structure in which a structure is formed by stacking a plurality of resin structural members having a space inside. The laminated structure is embedded in a road along a road, and a load-dispersing material having a lateral width wider than a lateral width of the resin-made laminated structure is disposed on the upper surface of the resin laminated structure. The upper region of the load-dispersing material is backfilled with backfill soil belonging to sand or quarry. In the above-described ground structure, the load-dispersion material having a wide lateral width disposed on the upper surface of the resin laminated structure embedded under the road extends over the side of the resin-made structural layer. The backfill soil is now in the lateral direction in the ground. For this reason, due to the different distortion rates of the tree-structured structures in the ground and the surrounding land, there is a fear that land movement will occur at the end of the tree-tanning structure and at the boundary between the backfill or the current foundation. And the movement of the land can be controlled by the portion of the aforementioned current foundation of the load-dispersing material that penetrates in the lateral direction. Therefore, —% ’ steadily prevents height differences or cracks in the surface of the formation at the aforementioned boundary line. In addition, the transverse width of the above-mentioned difficult-to-disperse material (4) and the lateral width of the resin-made laminated structure embedded in the road are the same. Therefore, the concentrated load of the load-dispersing material caused by the wheel load of the vehicle on the passing road is the same as the case where the load-distributing material _ is the same as the lateral width of the fat-laminated structure. See also, i 322266 7 201114981 scattered around the ground. Therefore, in the structure of the present invention, it is possible to reliably prevent the resin laminated structure from being damaged by the upper load. The lateral width of the load-dispersing material is considered to be wider than the lateral width of the resin-made laminated structure embedded in the road, and the physical properties and effects of the soil around the resin-made laminated structure are considered. In the case of the resin-made laminated structure, the magnitude of the upper load is estimated, and the like, in general, it is possible to achieve an expected value by extending 0.5 m to 2 m in the direction of both sides of the resin laminated structure. purpose. In the present invention, the above-mentioned load-dispersing material may be exemplified by a concrete floor, a concrete slab, a geotextile, an expanded metal plate, a grid or an iron plate. These materials may be used singly or as a combination of two or more. In order to prevent the damage of the resin laminated structure due to the upper load, the material of the load-dispersing material is preferably a concrete floor, a concrete slab, an iron plate or the like. In order to prevent the occurrence of height difference or crack on the surface of the formation, it is more preferable to be a geotextile, an expanded metal plate, a grid and an iron plate, or a combination of these materials. However, it is not limited to this. Further, in the case of using a load-dispersing material, in the case of using a sheet-like or sheet-like shape such as a geotextile, it is preferable to provide a crushed stone layer in order to increase the amount of friction between the resin-made laminated structure and the resin. Thereby, it is possible to surely suppress the movement of the thinner load-dispersing material on the resin-made structure due to the movement of the surrounding soil, and it is possible to more surely suppress the effect of the height difference of the surface of the formation 8 322266 201114981. Further, the geotextile is a material widely used in the use of civil engineering and the like, and also includes a geogrid. As an example of the geonet, a lattice of a lattice-like woven fabric in which a poly (po 1 yester) fiber and an arami d fiber are interlaced by resin coating is known. (fiber grid) is a geotextiles. Tensile strength is from 5〇kN/m to 200kN/m, weight is from 50g/m2 to 丨〇〇〇g/m2, tensile strain is below 1〇%, and it has a light but strong and high tensile strength. characteristic. The mesh size is, for example, from 10 mm to 17 cm. Further, a polymer lattice of a polyethylene y e t type vertical line (s t r a d d) reinforced by a guanamine fiber may be cited. Furthermore, in the geotextile, the ge, woven, non-woven (ge〇n〇_w〇ven) and woven fabric ^e〇knit), the structure in the land 'as long as it is Under the road, the underground structure 16 is buried along the road. For example, in the place where the resin is prepared, the light-weight pile layer under the road having the recorded pile structure is disposed under the road or the resin-made layer structure is provided in the product. In the ground of the rainwater storage and infiltration tank in the suppression facility, the width of the structure is "I" - the case where the lightweight piled soil is tied to the road, and the road is buried in the floor towel. In view of the subject of the present invention, the present invention is particularly effective in exerting the effect that the aforementioned lightweight soil layer is buried underground in the lane region of the road 322266 9 201114981. At this time, the aforementioned load-dispersing material is more effective. Further, in the structure of the present invention, the resin laminated structure is a rainwater storage installed in a rainwater outflow suppression facility installed under a road. In the case of leaving the infiltration tank, the rainwater flows into the rainwater storage and infiltration tank from the side groove formed along the road, and is particularly effective in practical use. According to the present invention, it is possible to provide a structure having the following configuration. In the structure, a resin laminated structure formed by stacking a plurality of resin structural members having a space inside is stacked along a road under a road, and The intermediate structure prevents the resin laminated structure from being damaged by the upper load while preventing the level difference or crack from occurring on the surface of the formation corresponding to the end portion of the resin laminated structure. The present invention will be described with reference to the drawings. (First embodiment) Fig. 1 is a view showing a state in which the structure in the present invention is a rainwater outflow suppression facility installed under a road. In the figure, the symbol 1 indicates the lane in the road, and the symbol 2 indicates the trail. Between the lane 1 and the trail 2, the side trench 3 is provided along the road. Below the lane 1, along the road. The rainwater storage and soaking tank 10 is embedded across the preset distance, and the rainwater storage and soaking tank 10 is provided with a tube 10 322266 201114981 at a certain interval. The management compartment 11 has a flow into the foregoing. The rainwater of the side groove 3 flows through the water collecting compartment (not shown), and the inflowing water enters the rainwater storage infiltration tank 10 from the management storage compartment 11 and is temporarily stored therein. The rainwater stored in the rainwater storage and soaking tank 10 is immersed to the surrounding foundation over time. Further, the component symbol 12 is a cover member that closes the inlet of the storage compartment 11. The rainwater storage and soaking tank 10 is as described above. In the example shown in FIG. 4, the resin laminated structure 30 formed by stacking a plurality of resin structural members 31 having a space inside in a plurality of layers is alternately arranged along the route to a necessary number. Then, in the rainwater storage The top surface of the leachable tank 10 is provided with a plurality of concrete floors 13 having a lateral width wider than the lateral width of the rainwater storage infiltration tank 10 as a load-distributing member. The concrete floor 13 can be provided in the entire length of the road. As an integrated object, as shown in Fig. 1(a), a plurality of sheets are arranged in the longitudinal direction of the road, and the installation is preferably carried out on site. In addition, the resin structural member 31 of the present invention is known, and is described in the above-mentioned Patent Document 3 (Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The resin structural member 31 having a space inside is shown in Fig. 4, and is described in Patent Document 4, and a plurality of lower ends are open to the box-shaped portion 32a in which a space is provided. The box row 32 arranged in the X direction basically has a configuration in which the number of necessary rows is arranged in a space of 11 322266 201114981 which is spaced apart in the Y direction orthogonal to the X direction. As shown in Fig. 4, a plurality of resin structural members 31 are stacked in a vertical state in a direction perpendicular to each other in the direction of the row of the casings 32. This becomes the above-mentioned structural laminated structure 3〇. When necessary, a plurality of resin structural members 3 of different sizes may be concentrated to form a part of the resin laminated structure 30. During the construction, a part of the lane 1 is excavated along the trail 2 to the necessary separation. The base crushed stone 4 is spread on the bottom of the excavated groove, and the resin-made structural member 31 is used to form the resin-made laminated structure 3 by a predetermined length on the base crushed material 4. Further, the entire base stone 4 and the tree-making laminated structure 30 thereon are passed through the water-permeable sheet 5 which is not woven, and the above-mentioned management accommodating compartment 11 is constructed in a desired place, and will be The water collection capacity formed by the relief 3 is connected to the management storage compartment through a resin pipe (not shown). The periphery of the word tree-structured laminated structure 30 is formed by the excavated earthworm negative tree to know the upper surface of the laminated structure 3〇. On the upper surface of the resin-made shield 30, a lateral width wider than the lateral width is extended, for example, across the side of the resin composite structure 30. A concrete floor having a lateral width of about 5 m to 2 m. 13 construction and its full length. As shown in the figure (13), it is preferable to construct the concrete floor 13 in such a manner that the 'Kunming earth floor 13 extends out to the side of the side groove 3. Although the concrete floor 13 can also be provided as an integrated object in the width direction of the road as shown in the figure (b), the plurality of pieces are arranged in the width direction of the condensate floor board 13 to be installed on the site 322266 12 201114981 Construction is appropriate. It is also possible to replace the on-site concrete floor 13' with a precast concrete board or an iron board and place it on the construction site, and place it on the upper surface of the resin laminated structure 30. Replacing the concrete floor 13 with precast concrete slabs or iron sheets is a preferred way to shorten the on-site construction period. Next, the backfill belonging to the excavated sand or quarry is backfilled on the prepared concrete floor 13, and the laying work for the side ditch 3 and the lane 1 is applied thereto. In the above-mentioned structure, since the rainwater accumulated in the lanes and the trails flows from the side grooves 3 through the management storage compartment 11 to the rainwater storage and infiltration tanks, it is possible to prevent the road from becoming flooded due to the heavy rain at one time. Furthermore, the management compartment can also be used to open the lid member 12, from which people can enter: ', the rainwater storage soaking tank 10 and the management container 11 itself. In the concrete floor 13 having a wide lateral width disposed in the rainwater storage and soaking tank buried in the lane 1, the portion extending toward the side of the rainwater storage (4) is as shown in Fig. 1 (6). It is shown that the producer is entering the lateral direction in the current foundation, so the boundary between the part around the resin soil paste 1 (four) and the backwater i, the end of the water retention soaking tank 10, or the current foundation The transverse direction, the movement of the λ soil, can be squeezed into the ground by the portion that J Wan enters. The aforementioned stalk of the fluorescing floor panel 13 can surely prevent the height difference or the portion of the formation surface 322266 13 201114981 (the portion shown as A in Fig. 1(b)) of the boundary line. crack. Furthermore, since the lateral width of the concrete floor 13 is wider than the lateral width of the rainwater storage infiltration tank 10 buried under the lane 1, the vehicle which acts on the traffic lane 1 of the concrete floor 13 through the backfilled soil The concentrated load applied by the wheel load or the like can be dispersed over a wider range than when the lateral width of the concrete floor 13 is the same as the lateral width of the rainwater storage soaking groove 10. For this reason, in the above-mentioned structure, it is possible to further prevent the resin laminated structure 30 constituting the rainwater storage and infiltration tank 10 from being buried due to the above-mentioned upper load. For the above reasons, in the structure of the present invention, even when the rainwater storage infiltration tank 10 is constructed under the lane 1, the soil on the load-dispersing material (concrete floor 13), that is, the thickness of the backfill can be used. In the case of a thin covering soil of about 60 cm, the height difference or crack of the surface portion of the formation and the resin laminated structure 30 constituting the rainwater storage and infiltration tank 10 are sufficiently prevented. (Second Embodiment) Fig. 2 is a view showing a different embodiment in the case where the structure in the present invention is a rainwater outflow suppression facility installed under a road, and corresponds to Fig. 1(b). The structure in the ground shown in Fig. 2 is a material for realizing the function as a load-dispersing material, and a geotextile 14 belonging to a sheet-like load-dispersing material is used instead of the concrete floor 13, It is different from the one shown in Figure 14 322266 201114981 1 . The other configurations are the same, and the same reference numerals are attached to the same components, and the description is omitted. Further, the effect achieved by the geotextile 14 belonging to the load-dispersing material is the same as that of the concrete floor 13, and the description thereof is omitted. Further, the geotextile fabric 14 is a material widely used for civil engineering or the like as described above, and as an example, a lattice-like fabric in which polyester fibers and guanamine fibers are interwoven by resin coating can be exemplified. The fiber lattice is made of a geotextile or the like. For the load-dispersion material which is in the form of a sheet, an expanded metal, a grating, or the like can also be exemplified. When a sheet-like or thin-plate shape such as the geotextile 14 is used as a load-dispersing material, the amount of friction between these materials and the resin laminated structure 30 constituting the rainwater storage tank 10 is increased. A gravel layer 6 is provided therebetween. Thereby, the careless movement of the thinner load-dispersing material (ground fabric 14) on the rainwater storage soaking tank 10 due to the movement of the surrounding soil can be surely suppressed, and the surface of the formation can be further reliably prevented. Produce height differences or cracks. (Third Embodiment) Fig. 3 is a view showing a state in which the structure in the present invention is a lightweight pile layer in a road having a lightweight pile structure, as viewed from a transverse direction of the road. In Fig. 3, the component symbol 1 is a lane running on the soft foundation 20, and a trail 2 is set on both sides of the lane 1, and a side groove 3 is formed between the lane 1 15 322266 201114981 and the trail 2. Since the foundation 20 is relatively soft under the lane 1, in order to reduce the load applied to the foundation, the shape shown in the fourth figure described above is alternately formed by the resin structural members 31 having a plurality of spaces inside. The resin laminated structure 30 formed by the multilayer stack is buried in the ground as the lightweight soil layer 21. In this example, the lightweight soil layer 21 is buried across approximately the entire area of the lane 1 of the lane 1, but only when the soft foundation exists only in a part of the width direction of the lane 1 The case where the lightweight soil layer 21 is buried. Then, also on the upper surface of the lightweight soil layer 21 formed of the resin laminated structure 30, a concrete floor 13 having a lateral width wider than the lateral width of the lightweight soil layer 21 is disposed as a load. Dispersed material. Then, on the concrete floor 13, a backfill layer is formed by the backfill which belongs to the sand and quarry excavated during the construction, and the laying work for the side ditch 3 and the lane 1 is constructed on the backfill layer. * In the case of the structure in the ground shown in Fig. 3, the lateral width is lighter than the upper surface of the lightweight soil layer 21 formed by the resin laminated structure 30 embedded in the lane 1. The concrete floor 13 having a wider lateral width of the soil layer is used as the load-dispersing material, so that it is identical to the structure in the ground shown in Fig. 1, and the boundary between the lightweight soil layer 21 and the surrounding soil can be surely prevented. The surface layer portion (the portion shown by A in FIG. 3) generates a height difference or a crack, and further, the resin laminated structure 30 constituting the pile layer 21 in the light of 16 222266 201114981 can be further prevented from being buried because of the heavy load. Damage is not stated otherwise. Further, although not shown, even in the case of the structure in the ground shown in Fig. 3, a concrete slab or an iron plate can be used, and a flaky material such as a geotextile can be used as a load instead of the concrete floor 13. The point of dispersing materials is also taken for granted. [Brief Description of the Drawings] Fig. 1(a) is a schematic view showing the state in which the structure in the present invention is a rainwater outflow suppression facility installed under the road from the direction of the route of the road. Figure (8) is a cross-sectional view taken along line b-b of Figure (4). Fig. 2 is a cross-sectional view showing the structure of the present invention in a cross-cutting direction of the road in the case where the structure is installed in the rainwater suppression facility of the road. Fig. 3 is a cross-sectional view showing a state in which the structure in the present invention is a lightweight pile layer in a road having a lightweight pile structure in a cross-sectional direction of the road. Fig. 4 is a view for explaining a resin structural member having a space inside the structure used in the structure of the present invention. [Main component symbol description] 1 Lane side trench 2 Trail foundation gravel 322266 4 17 3 201114981 5 Water permeable sheet 6 Gravel layer 10 Rainwater storage soaking tank 11 Management accommodating compartment 12 Covering piece 13 Concrete floor (load dispersing material) 14 Geotextile (load-dispersion material) 20 Soft foundation 21 Light-weight pile layer 30 Resin-made layer structure 31 Resin structure member 32a Box-shaped part 32 Box row